BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Osservatorio Astrofisico di Catania - ECPv6.14.0//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-ORIGINAL-URL:https://www.oact.inaf.it X-WR-CALDESC:Eventi per Osservatorio Astrofisico di Catania REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:UTC BEGIN:STANDARD TZOFFSETFROM:+0000 TZOFFSETTO:+0000 TZNAME:UTC DTSTART:20240101T000000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=UTC:20240722T110000 DTEND;TZID=UTC:20240722T120000 DTSTAMP:20260404T205626 CREATED:20240719T141616Z LAST-MODIFIED:20240719T141620Z UID:16589-1721646000-1721649600@www.oact.inaf.it SUMMARY:Galactic Archaeology: decoding the fossil record of Galaxy formation and evolution DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Monday\, July 22\, 11:00 a.m. \nORGANIZER: DFA UNICT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Dott. Santi Cassisi\, INAF-Osservatorio Astronomico d’Abruzzo \nABSTRACT:One of most important issue in Astrophysics is the achievement of a robust understanding of the sequence of processes that contributed to the building up of the Milky Way. This is obviously important not only “on a local scale” in order to recover the history of formation and evolution of the Galaxy\, but also\, more in general\, for understanding the formation process of spiral galaxies. In the last decade\, the advent of high precision photometric and spectroscopic surveys as well as the possibility to estimate\, thanks to the ESA Gaia mission\, accurate distance for a huge number of field stars\, combined with the development of an accurate theoretical framework\, is actually opening a new era for this kind of investigations.We will present some recent results – obtained by using this updated observational and theoretical framework – about the formation and early evolution of the Milky Way. \n  \nA few rules:— in case of large in-person attendance\, attendees may be asked to wear a face mask— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/galactic-archaeology-decoding-the-fossil-record-of-galaxy-formation-and-evolution/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2024/07/Cassisi_11luglio.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20240923T110000 DTEND;TZID=UTC:20240923T120000 DTSTAMP:20260404T205626 CREATED:20240913T081704Z LAST-MODIFIED:20240913T081707Z UID:16744-1727089200-1727092800@www.oact.inaf.it SUMMARY:The Hot Neptune Desert DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Monday\, September 23\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Dott. Christian Magliano (Università di Napoli Federico II\, Naples\, Italy) \nABSTRACT:The vast majority of close-in planets are either massive hot Jupiters capable of holding their atmosphere against the stellar photoevaporation or small rocky planets completely drained by the stellar radiation. We observe an unexpected dearth of highly irradiated Neptune- and Saturn-like planets orbiting their host star in less than 4-10 days\, called “Hot Neptune Desert”. In this talk\, I will present our recent findings from uniformly vetting 250 hot Neptune TESS candidates using a two-step vetting technique\, as well as discuss a cutting-edge approach to examine the problem under a new perspective. I will also discuss how the PLATO mission may enhance our understanding of the Hot Neptunes. \n  \nA few rules:— in case of large in-person attendance\, attendees may be asked to wear a face mask— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/the-hot-neptune-desert/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2024/09/Locandina_page-0001.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20240927T180000 DTEND;TZID=UTC:20240928T130000 DTSTAMP:20260404T205626 CREATED:20240923T151411Z LAST-MODIFIED:20240926T132541Z UID:16789-1727460000-1727528400@www.oact.inaf.it SUMMARY:Notte Europea dei Ricercatori 2024 DESCRIPTION:SHARPER è il nome di uno dei progetti italiani sostenuti dalla Commissione Europea per la realizzazione della Notte Europea dei Ricercatori. \nSHARPER significa SHAring Researchers’ Passion for Enhanced Roadmaps e ha l’obiettivo di coinvolgere tutti i cittadini nella scoperta del mestiere di ricercatore e del ruolo che i ricercatori svolgono nel costruire il futuro della società attraverso l’indagine del mondo basata sui fatti\, le osservazioni e l’abilità nell’adattarsi e interpretare contesti sociali e culturali sempre più complessi e in continua evoluzione. \nPer l’edizione 2024\, SHARPER si svolgerà il 27 settembre in 15 città italiane\, tra cui Catania\, per raccontare la passione\, le scoperte e le sfide dei ricercatori di tutta Europa attraverso mostre\, spettacoli\, concerti\, giochi\, conferenze e centinaia di altre iniziative rivolte al grande pubblico. \nIn occasione della Notte dei Ricercatori 2024\, l’INAF-Osservatorio Astrofisico di Catania ha organizzato le seguenti attività per il pubblico che si svolgeranno tra il 27 e il 28 settembre: \n  \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nL’ASTROFISICA PER IL FUTURO – I ricercatori guideranno i visitatori alla scoperta dei progetti di ricerca dell’INAF-Osservatorio Astrofisico di Catania e presenteranno gli strumenti e i software per la “Visualizzazione immersiva” – Per i più piccoli: concorso “Disegna il tuo pianeta reale o immaginario” e laboratorio didattico “Effetto serra in bottiglia” – “Gioco a premi: “Chi vuol essere astrofisico” \nA cura di P. Romano\, G. Cutispoto\, G. Scandariato\, D. Sicilia\, E. Sciacca\, F. Vitello\, L. Pelonero\, M. ImbroscianoData e ora: 27-09-2024 dalle 18:00 alle 24:00Luogo: Cortile Platamone (stand n. 16)\, Catania \n\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nOSSERVAZIONI AL TELESCOPIO – I ricercatori dell’INAF-Osservatorio Astrofisico di Catania guideranno i visitatori nell’osservazione di alcuni oggetti celesti attraverso l’ausilio di un telescopio dedicato. \nA cura di L. Contarino\, A. Frasca\, J. Alonso SantiagoData e ora: 27-09-2024 dalle 21:00 alle 24:00 \n\n\n\n\nPer partecipare gli interessati dovranno rivolgersi allo Stand n. 16 – Cortile Platamone\, Palazzo della Cultura \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nTECNICHE DI RADIOASTRONOMIA PER LA MEDICINA – La radioastronomia ha sviluppato nel corso degli ultimi decenni moltissimi algoritmi atti alla generazione della miglior immagine possibile. è possibile applicare questi stessi algoritmi alla diagnostica in medicina? \nMini-Talk a cura di F. CavallaroData e ora: 27-09-2023 dalle 19:00 alle 19:10Luogo: Palazzo Sangiuliano\, Piazza Università\, 13 \n\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nPERCHE’ SOLO SULLA TERRA? ALLA RICERCA DI VITA NELLO SPAZIO – Le attività di astrobiologia in corso a INAF-OACT. Presenza di composti utili alla vita nello spazio\, origini della vita sulla Terra\, ricerca di tracce di vita extraterrestre e rischi causati dal cambiamento climatico. \nMini-Talk a cura di R. G. Urso\, M. E. Palumbo\, C. ScirèData e ora: 27-09-2024 dalle 19:30 alle 19:40Luogo: Aula 13 – Rettorato Piazza Università\, 2 \n\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nDALL’ASTRONOMIA ALL’INDUSTRIA PER LO STUDIO DI CATASTROFI NATURALI –Presentazione degli strumenti di analisi dei fenomeni astronomici e loro sfruttamento per la valutazione dei rischi legati a eventi climatici estremi nell’ambito della collaborazione industriale HaMMon finanziata dal PNRR. \nMini-Talk a cura di E. Sciacca\, F. Vitello\, L. Pelonero\, M. ImbroscianoData e ora: 27-09-2024 dalle 19:40 alle 19:50Luogo: Palazzo Sangiuliano Piazza Università\, 13 \n\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nPORTE APERTE ALL’OSSERVATORIO – Visita all’Osservatorio Astrofisico di Catania. Osservazioni della fotosfera e cromosfera solare e 2 talk dal titolo: “Il Sole: Agente Primario del Clima sulla Terra” e “Gli effetti delle eruzioni solari sulla Terra”. \nLe prenotazioni saranno possibili a partire dal 24 Settembre attraverso il sito EventBrite (link) \nA cura di G. Cutispoto\, S.L. Guglielmino e L. ContarinoData e ora: 28-09-2024 dalle 9:30 alle 13:00Luogo: Osservatorio Astrofisico – via S. Sofia\, 78 URL:https://www.oact.inaf.it/event/notte-europea-dei-ricercatori-2024/ CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/png:https://www.oact.inaf.it/wp-content/uploads/2024/09/sharper-2024-condivisione-fb-1.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241004T110000 DTEND;TZID=UTC:20241004T120000 DTSTAMP:20260404T205627 CREATED:20241001T090846Z LAST-MODIFIED:20241001T090849Z UID:16879-1728039600-1728043200@www.oact.inaf.it SUMMARY:Unraveling Space Weathering on Planetary and Astrophysical Surfaces DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Friday\, October 4\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Prof. Thomas M. Orlando (School of Chemistry and Biochemistry and School of Physics\, Georgia Institute of Technology\, Atlanta\, GA\, USA) \nABSTRACT:It is well known that the interaction of energetic ions\, electrons and photons with surfaces and interfaces leads to non-thermal desorption via a process typically referred to as desorption induced by electronic transitions (DIET).  When DIET involves either electrons or photons\, these processes are generally referred to as electron-stimulated desorption and photon-stimulated desorption (PSD)\, respectively.  Recent attention has focused on understanding the role of non-thermal “space weathering” in the processing of interstellar grains and ices.Specifically\, there is deep interest in understanding the radiation processing of carbon grains in the solar nebula and unraveling the H2O formation mechanisms in solar nebula and planetary systems\, including the Moon. Using graphite grains\, the VUV photon-simulated oxidation of carbon grains via reactive scattering of water fragments produced by dissociative electron attachment at the buried interface was examined. The results suggested that VUV PSD at the buried water:carbon grain interface may help control the carbon inventory during planet formation. The inverse process\, (i.e\, the formation of water) may happen on metal-oxide samples such as mineral grains and lunar regolith samples\, that contain or are terminated by hydroxyl groups. Solar wind spaceweathering experiments of several Apollo lunar samples demonstrated that thermally activated recombinative desorption (RD) can be H2O sources [2\,3] and that electron-stimulated reactive scattering to produce water may also be occurring\, especially when the Moon is in the magnetopause[4].  RD can occur on a diurnal basis on the Moon and is prevalentduring meteoroid impacts. The latter is simulated by laser irradiation studies followed by state and velocity resolved detection of the produced water.  Finally\, evidence of space weathering and surface alteration has also been revealed using spatially resolved\, high-resolution nanoscale Fourier transform infrared imaging/spectroscopy correlated with photoluminescence (PL) on Apollo samples with different origins and history. \n[1]  J. Shi\, G. A. Greives\, and T. M. Orlando\, Astrophys. J 80(1) 24 (2015).[2] B. M. Jones\, et. al\, Geophys. Res. Lett.\, 45\, (2018) 10\,959–10\,967[3] B. M. Jones\, et. al\, Astrophys. J. Lett.\, 891 (2020) L43[4] 7. S. Li\, A. R. Poppe\, T. M. Orlando\, B. M. Jones\, O. J. Tucker\, W. M. Farrell\, and A. R. Hendrix\,”\, Nat. Astron. (2023) \n  \nA few rules:— in case of large in-person attendance\, attendees may be asked to wear a face mask— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/unraveling-space-weathering-on-planetary-and-astrophysical-surfaces/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2024/10/OrlandoCataniaSlide.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241021T113000 DTEND;TZID=UTC:20241021T123000 DTSTAMP:20260404T205627 CREATED:20241014T110601Z LAST-MODIFIED:20241014T110605Z UID:17010-1729510200-1729513800@www.oact.inaf.it SUMMARY:Stellar-wind-fed magnetospheres of magnetic massive stars DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Monday\, October 21\, 11:30 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Prof. Stanley Owocki (University of Delaware) \nABSTRACT:A subpopulation (~9%) of hot (OB) stars exhibit strong (B~100-10\,000 G)\, large-scale (often predominantly dipolar) magnetic fields that channel their stellar wind outflows into circumstellar magnetospheres. For young\, rapidly rotating B-stars that have not yet been spun down by wind-magnetic braking\, wind material can be trapped between the Kepler co-rotation radius (RK) and the Alfven radius (RA)\, forming then a “Centrifugal Magnetosphere” (CM)\, with density set at the critical level for “Centrifugal Breakout” (CBO) against the confining magnetic tension. This talk discusses how such CBO controls both the onset and strength of observed H-alpha emission\, while the energetics of the associated CBO-driven magnetic reconnection match well the observed scalings of a non-thermal\, circularly polarized radio emission from such stars . \n  \nA few rules:— in case of large in-person attendance\, attendees may be asked to wear a face mask— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/stellar-wind-fed-magnetospheres-of-magnetic-massive-stars/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2024/10/seminario_Owocky.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241030T103000 DTEND;TZID=UTC:20241030T113000 DTSTAMP:20260404T205627 CREATED:20241028T144732Z LAST-MODIFIED:20241028T144735Z UID:17089-1730284200-1730287800@www.oact.inaf.it SUMMARY:Spectroscopic observations and modeling of solar flares: new insights from IRIS DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Wednesday\, October 30\, 10:30 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Vanessa Polito (Lockheed Martin Solar and Astrophysics Laboratory) \nABSTRACT:Recent high-resolution observations from the IRIS satellites have enabled significant advancements in our understanding of the physical mechanisms at play during the impulsive phase of flares\, including details of how the non-thermal energy is released and propagated from the corona to the low-atmosphere through accelerated particles. At the same time\, the new discoveries have brought to light new unsolved questions and challenges for current models. This talk will provide some examples of the unique contributions to our understanding of flares from IRIS\, also in coordination with other solar observatories\, and how state-of-the-art heating models of flares can be constrained by the available imaging and spectral diagnostics. I will also discuss some of the outstanding problems in preparation for the next generation of solar missions. \n  \nA few rules:— in case of large in-person attendance\, attendees may be asked to wear a face mask— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/spectroscopic-observations-and-modeling-of-solar-flares-new-insights-from-iris/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2024/10/seminario_Polito.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241108T113000 DTEND;TZID=UTC:20241108T113000 DTSTAMP:20260404T205627 CREATED:20241106T111323Z LAST-MODIFIED:20241106T111326Z UID:17144-1731065400-1731065400@www.oact.inaf.it SUMMARY:From clouds to fragments: on the multi-scale interplay between gravity and turbulence DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Friday\, November 8\, 11:30 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Dott. Alessio Traficante (IAPS-INAF) \nABSTRACT:The star formation mechanism occurs in well defined structures that can be identified and studied in great details in our own Galaxy: the process starts in giant molecular clouds\, objects extended up to several tens of parsecs\, within which elongated sub-structures\, called filaments\, may form. Inside filaments\, round-like condensations extended up to ~1pc in radius\, the so-called clumps\, are the natural birth site of the pre- and proto- stellar fragments\, inside which will origin the future stars.There are still many open questions in this hierarchical view of the star formation process: are these structures relatively confined from each other\,  or is the large-scale environment affecting the dynamics of the formation down to clumps and fragments? Is there a continuous interplay of the various forces involved in the process\, namely turbulence\, gravity (and magnetic fields)\, at all scales? Or is there a relevant scale at which gravity will start to dominate the collapse\, with critical implications on the star-formation mechanism?After a general overview of the problem\, I will present in details some recent results focused on the interplay between gravity and turbulence at the filament\, clump and fragment scales. To investigate this interplay at the larger scales\, we have combined the dynamics of so-called 70 micron quiet clumps\, i.e. very pristine regions not yet strongly affected by feedbacks\, with the dynamics of the parent filaments in which they are embedded. At smaller scales\, I will discuss the different scenarios of fragments formation in light of the most recent results from the SQUALO (Star formation in QUiescent And Luminous Objects) project. This ALMA survey has been designed to investigate the formation properties in a sample of massive clumps selected to be at various evolutionary stages and with the common feature that they are all accreting at the clump scales.Our results show that a large scales we observe a continuous interplay between turbulence and gravity\, where the former creates structures at all scales and the latter takes the lead above a critical value of the surface density is reached\, ~ 0.1 g cm^-2. At the same time\, the fragmentation properties show several indications that the fragment are “clump-fed”\, i.e. the process is dynamical and the gravity dominates the collapse inside our massive clumps. \n  \nA few rules:— in case of large in-person attendance\, attendees may be asked to wear a face mask— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/from-clouds-to-fragments-on-the-multi-scale-interplay-between-gravity-and-turbulence/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2024/11/traficante_seminario.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250304T151500 DTEND;TZID=UTC:20250304T151500 DTSTAMP:20260404T205627 CREATED:20250303T091409Z LAST-MODIFIED:20250305T091510Z UID:17753-1741101300-1741101300@www.oact.inaf.it SUMMARY:Lo Spazio come bene comune dell'umanità DESCRIPTION:DATA:  Martedì\, 4 Marzo\, 15:15 \nORGANIZZATORE: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) \nSPEAKER: Prof.ssa Patrizia Caraveo (Presidente della Società Astronomica Italiana e Dirigente di Ricerca presso INAF-IASF di Milano) \nAd oggi\, ci sono in orbita circa 10.000 satelliti operativi (e non meno di 3.000 per così dire “defunti”). Offrono servizi di grande utilità per migliorare la qualità della nostra vita\, ma occorre considerare le conseguenze della crescita esplosiva nel loro numero. Benché operino nello spazio\, i satelliti hanno infatti un impatto non trascurabile sulla vita e sulle attività che si svolgono sulla Terra e sulla qualità della nostra atmosfera. Lo spazio è parte integrante dell’ecosistema terrestre e prima ce ne renderemo conto meglio sarà. URL:https://www.oact.inaf.it/event/lo-spazio-come-bene-comune-dellumanita/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/03/Patrizia-Caraveo-2.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250319T113000 DTEND;TZID=UTC:20250319T113000 DTSTAMP:20260404T205627 CREATED:20250304T175229Z LAST-MODIFIED:20250305T075408Z UID:17742-1742383800-1742383800@www.oact.inaf.it SUMMARY:Status and future of 21-cm cosmology during the first billion years DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Wednesday\, March 19\, 11:30 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Prof. Andrei Mesinger (Scuola Normale Superiore\, Pisa) \nABSTRACT:The 21-cm hyperfine line of neutral hydrogen is set to revolutionize studies of the first billion years\, spanning the cosmic dawn of the first stars and eventual reionization of our Universe. I will discuss the potential of this probe in learning about the unknown astrophysics of the first galaxies as well as physical cosmology. Current upper limits on the cosmic 21-cm power spectrum already provide new insights into the heating of the intergalactic medium\, and the X-ray sources in the first galaxies. I will discuss the upcoming steps\, including the main challenges\, that will eventually lead to the Nobel prize-worthy 3D map of half of our observable Universe with the Square Kilometer Array (SKA) telescope.Our results show that a large scales we observe a continuous interplay between turbulence and gravity\, where the former creates structures at all scales and the latter takes the lead above a critical value of the surface density is reached\, ~ 0.1 g cm^-2. At the same time\, the fragmentation properties show several indications that the fragment are “clump-fed”\, i.e. the process is dynamical and the gravity dominates the collapse inside our massive clumps. \n  \nA few rules:— in case of large in-person attendance\, attendees may be asked to wear a face mask— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/status-and-future-of-21-cm-cosmology-during-the-first-billion-years/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/03/Seminario_mesinger.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250327T110000 DTEND;TZID=UTC:20250327T120000 DTSTAMP:20260404T205627 CREATED:20250324T093404Z LAST-MODIFIED:20250324T093407Z UID:17877-1743073200-1743076800@www.oact.inaf.it SUMMARY:How is magnetism affecting the properties of solar and stellar acoustic modes? DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Thursday\, March 27\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Dr. Eva Panetier (CEA Saclay\, Université Paris Cité) \nABSTRACT:Outside of solar neutrinos\, the only way to directly probing solar and stellar interiors is to use seismic techniques\, i.e. studying the waves propagating inside them. In the case of the Sun\, acoustic waves are excited by turbulent motion in the convective envelope\, and propagate towards the interior\, creating a variety of standing pressure modes (p modes). By investigating how small perturbations influence the modes parameters\, it is possible to probe the structural and dynamical properties of the star such as internal rotation and mixing\, chemical composition\, density\, convection zone depth\, etc. In the stellar case\, asteroseismology allows the inference of the stellar fundamental parameters such as mass\, radius\, and age. Although\, solar p-modes frequency\, amplitude\, and energy vary in relation with the solar magnetic cycle and similar variations were observed for other magnetically active solar-type stars\, such a variability is often overlooked in stellar modelling. In the context of the preparation of the PLATO mission\, whose aim is to characterize Earth-like planets orbiting solar-like stars in part thanks to asteroseismology\, we need to better understand the relation between magnetic variations and modes parameters. In this seminar\, I will focus on the excitation of the solar p modes using the last 28 years of data from the SoHO/GOLF instrument\, with a method gathering a better temporal resolution compared to classical approaches. In this framework\, I was able to perform a statistical study of the energy of the modes. Summing the energy of all studied modes\, I will demonstrate that there is a discrepancy between the observed excitation rate and the expected rate under the hypothesis of excitation driven entirely by turbulent convection. I will discuss the link between this discrepancy and surface magnetism effects such as flares and coronal mass ejection. In conclusion\, I will explain how a better understanding of the relation between the dynamo mechanism and modes properties variation across time would allow us to improve the constraint we have on stellar dynamics and obtained refined stellar fundamental parameters. \n  \nA few rules:— in case of large in-person attendance\, attendees may be asked to wear a face mask— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/how-is-magnetism-affecting-the-properties-of-solar-and-stellar-acoustic-modes/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/03/Locandine-eventi-OACT.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250403T103000 DTEND;TZID=UTC:20250403T113000 DTSTAMP:20260404T205627 CREATED:20250327T154317Z LAST-MODIFIED:20250404T180222Z UID:17907-1743676200-1743679800@www.oact.inaf.it SUMMARY:Probing Impacts of Stellar Variability within HST WFC3/STIS and Ariel Tier 2 and Tier 3 Observations with Activity Metrics DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Thursday\, April 3\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Alexandra Thompson (Department of Physics and Astronomy\, University College London) \nABSTRACT:Stellar activity produces two main diagnostics within low-resolution exoplanet transmission spectra. Its highly chromatic nature imparts trends in the underlying spectrum that become most noticeable at shorter wavelengths due to the increased contrast between the flux from the active regions (i.e. spots and/or faculae) and the quiet photosphere. The second characteristic is that activity is inherently time-variable\, predominantly modulated by stellar rotation as active regions rotate into and out of view but also with contributions from longer timescales of evolution/decay and even long-term activity cycles e.g. maxima and minima (although certain configurations e.g. polar spots and active latitudes will be more resistant to this). This variability can reveal itself through subsequent observations of the system and is both useful and challenging; it can further help us to identify and constrain potential contamination but also means that observations at different epochs may require individual corrections before they can robustly be combined and analysed together which will become increasingly difficult for smaller planets as the SNR of each visit progressively decreases. In this seminar I will present how both diagnostics have been used with archival HST WFC3 and STIS datasets to create two new activity metrics that are highly complementary to existing indicators. I will also show preliminary results surrounding how this work is being extended to Tier 2 and Tier 3 Ariel simulations to explore how stellar variability will impact our ability to stack visits to obtain the required SNR for these tiers. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/probing-impacts-of-stellar-variability-within-hst-wfc3-stis-and-ariel-tier-2-and-tier-3-observations-with-activity-metrics/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/03/CataniaSeminarTitleSlide2025.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250407T110000 DTEND;TZID=UTC:20250407T120000 DTSTAMP:20260404T205627 CREATED:20250405T091539Z LAST-MODIFIED:20250405T091543Z UID:17926-1744023600-1744027200@www.oact.inaf.it SUMMARY:Non-standard signatures from CMB polarisation with an insight into the new technological challenges DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE:  Monday\, April 7\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Dr. Matteo Billi (University of Catania) \nABSTRACT:In this seminar\, I will focus on non-standard signatures from CMB polarisation that may indicate the existence of new phenomena beyond the standard models of cosmology and particle physics\, from both theoretical and observational perspectives. ESA’s Planck mission has observed CMB temperature anisotropies at the cosmic variance limit\, but polarisation remains to be further investigated. CMB polarisation data are important not only because they contribute to provide tighter constraints on cosmological parameters but also because they allow the study of physical processes that would be excluded if only the CMB temperature maps were considered. I use polarisation data into account to assess the statistical significance of the anomalies currently observed only in the CMB temperature map\, and to constrain the Cosmic Birefringence (CB) effect\, which is expected in parity-violating extensions of the standard electromagnetism.Measuring CMB polarisation is technically challenging because the polarised signal is much fainter than the temperature signal\, and accurate polarisation estimates require exquisite control of systematic effects. To investigate the impact of spurious signals in upcoming CMB polarisation experiments\, I present a study of the interplay between half-wave plate (HWP) non-idealities and the beams of the instrument for the next generation of CMB experiments\, with an insight into how this instrumental contamination affects the measurement of the cosmic birefringence effect. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/non-standard-signatures-from-cmb-polarisation-with-an-insight-into-the-new-technological-challenges/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/04/seminario_Billi.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250409T110000 DTEND;TZID=UTC:20250409T120000 DTSTAMP:20260404T205627 CREATED:20250408T170352Z LAST-MODIFIED:20250408T170355Z UID:17939-1744196400-1744200000@www.oact.inaf.it SUMMARY:Line shape modeling for the characterization of magnetized plasmas in fusion research and astrophysics DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Wednesday\, April 9\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Joel Rosato (Aix-Marseille Université – France) \nABSTRACT:In this talk\, we report on a selection of issues present in the elaboration of spectroscopic models for magnetized plasma diagnostic. A focus is put on tokamak edge and white dwarf atmosphere plasma conditions. In both cases\, the observed spectra exhibit clean lines\, either in absorption or in emission\, denoting the presence of neutral species (atoms). An analysis of the line shape and intensity yields information on the plasma parameters provided a suitable physical model is used. We first discuss in detail the physical mechanisms underlying the broadening of the spectral lines due to the plasma microfield (Stark effect)\, and we next report on models and codes that have been developed in our group at the PIIM laboratory. Applications to the fitting of observed spectra – both in magnetic fusion and astrophysics – are presented. Motivated by current research trends\, we also discuss specific issues related to the presence of strong external magnetic field (Zeeman effect etc.) and report on some recent works done in atomic physics for the improvement of line shape models. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/line-shape-modeling-for-the-characterization-of-magnetized-plasmas-in-fusion-research-and-astrophysics/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/04/Seminario_Rosato.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250414T110000 DTEND;TZID=UTC:20250414T120000 DTSTAMP:20260404T205627 CREATED:20250412T163324Z LAST-MODIFIED:20250412T163327Z UID:17962-1744628400-1744632000@www.oact.inaf.it SUMMARY:Elucidating diffuse Galactic synchrotron emission for precision 21cm and CMB cosmology DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Monday\, April 14\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Dr. Melis O. Irfan (IoA\, University of Cambridge) \nABSTRACT:The next generation of Cosmic Microwave Background experiments are poised to probe the inflationary period of the Universe through the measurement of primordial B-modes\, whilst 21cm experiments are observing the reionization history of the early Universe and formation of Large-Scale Structure through the mapping of neutral hydrogen. These two complementary fields span the radio to microwave frequency regimes and share a pivotal data reduction task: foreground component separation.Diffuse Galactic synchrotron emission is the dominant foreground for arcmin/degree scale cosmological surveys operating across MHz frequencies in intensity\, and at all frequencies under 60 GHz in polarised intensity. In this talk I will present measurements of the synchrotron spectral index and curvature between 73 MHz and 1 GHz through the combined use of pilot MeerKLASS\, Haslam\, Maipu/MU and LWA data. I will discuss the advances that can be made to component separation algorithms thanks to more sophisticated foreground emission modelling and will present a spatially complex\, all-sky model of the synchrotron spectral index formed using convolutional neural networks trained on sets of both high- and low-resolution empirical data. Such advances will\, and already are\, expanding our understanding of the spatial and spectral form of this complex emission; ameliorating component separation for both CMB and 21cm intensity mapping experiments. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/elucidating-diffuse-galactic-synchrotron-emission-for-precision-21cm-and-cmb-cosmology/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/04/promo_page-0001.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250430T110000 DTEND;TZID=UTC:20250430T120000 DTSTAMP:20260404T205627 CREATED:20250428T210420Z LAST-MODIFIED:20250428T210924Z UID:18011-1746010800-1746014400@www.oact.inaf.it SUMMARY:Precision Meter-wavelength Polarimetry with the Very Large Array DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Wednesday\, April 30\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Rick Perley (National Radio Astronomy Observatory – USA) \nABSTRACT:Accurate imaging polarimetry at meter wavelengths requires removal of the highly variable ionospheric Faraday rotation (IFRM) with an accuracy of 0.1 rad/m^2 or better. Models to estimate the VTEC using GNSS timing data\, combined with global terrestrial magnetic field models have been developed over the past 25 years.  Estimating the accuracy of these models requires observations of a source of known intrinsic electric vector position angle (EVPA) over a wide rage of ionospheric conditions.Using eight VLA polarimetric observations of the moon spanning ten years using the VLA’s P-band (295 — 445 MHz) receivers\, we have tested the accuracy of seven global IONEX models produced by the AIPS program TECOR\, and the regional model derived by ALBUS.All seven global models overestimate the IFRM\, typically by 0.5 to 1.0 rad/m^2 — a value which remains constant over many hours\, including day — night transitions.  The ‘ALBUS’ model\, which uses GNSS ground station data within ~300 km of the requested site\, generates predictions which are always the closest — usually with 0.2 rad/m^2— to the observed values. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/precision-meter-wavelength-polarimetry-with-the-very-large-array/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/04/Locandine-eventi-OACT-2.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250519T210000 DTEND;TZID=UTC:20250519T223000 DTSTAMP:20260404T205627 CREATED:20250516T150330Z LAST-MODIFIED:20250516T150902Z UID:18067-1747688400-1747693800@www.oact.inaf.it SUMMARY:Pint of Science 2025: Alla ricerca di vita nello Spazio DESCRIPTION:Nell’ambito dell’iniziativa “Pint of Science“\, che si propone di promuovere incontri con ricercatori in un ambiente accogliente e informale\, vi segnaliamo la seguente iniziativa\, che si svolgerà presso il Joyce Irish Pub\, Via Montesano 46 – Catania. \n \n \n \n \n \n \nTitolo: Alla ricerca di vita nello Spazio \nSommario: C’è vita su altri pianeti? O la vita esiste solo sulla Terra? Oggi possiamo utilizzare tecnologie che potrebbero aiutarci a rispondere. Telescopi\, missioni spaziali e l’analisi di campioni provenienti dallo spazio ci permettono di cercare gli ingredienti della vita su altri pianeti\, aiutandoci anche a comprendere come si è originata la vita sulla Terra. \nRelatore: Riccardo G. Urso (Ricercatore – INAF Osservatorio Astrofisico di Catania) \nRicercatore all’INAF di Catania\, si occupa di Astrochimica e astrobiologia per studiare l’origine e la presenza di molecole organiche nello spazio.PhD in Scienza dei materiali e nanotecnologie\, ha lavorato come post-doc per l’Agenzia Spaziale Francese ed è stato Einstein Fellow all’Università Libera di Berlino. \n\n \n \n \n \n \n  \n\n Ingresso libero fino a esaurimento dei posti disponibili URL:https://www.oact.inaf.it/event/pint-of-science-2025-alla-ricerca-di-vita-nello-spazio/ LOCATION:Joyce Irish pub\, Via Montesano 46\, Catania\, 95131\, Italia CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/05/Screenshot-2025-05-16-alle-16.57.58.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250520T210000 DTEND;TZID=UTC:20250520T223000 DTSTAMP:20260404T205627 CREATED:20250516T151406Z LAST-MODIFIED:20250516T151412Z UID:18076-1747774800-1747780200@www.oact.inaf.it SUMMARY:Pint of Science 2025: Viaggio cosmico a sorsi di birra DESCRIPTION:Nell’ambito dell’iniziativa “Pint of Science“\, che si propone di promuovere incontri con ricercatori in un ambiente accogliente e informale\, vi segnaliamo la seguente iniziativa\, che si svolgerà presso il Joyce Irish Pub\, Via Montesano 46 – Catania. \n \n \n \n \n \n \nTitolo: Viaggio cosmico a sorsi di birra \nSommario: Esploreremo come la radiazione cosmica di fondo (CMB)\, l’eco del Big Bang\, ci riveli indizi sullo stato dell’universo primordiale. Dalle fluttuazioni di temperatura  alla struttura su larga scala dell’universo\, ogni segnale è un frammento del passato che ci permette di ricostruire le condizioni iniziali del cosmo. Al contempo\, ci affacceremo alle questioni ancora aperte\, sfidando le nostre teorie e aprendo questioni fondamentali sulla natura della realtà.  \nRelatore: Giuseppe Puglisi (Ricercatore – Dipartimento di Fisica e Astronomia Università di Catania e INFN Sezione di Catania) \nGiuseppe Puglisi è un cosmologo dell’Università di Catania. La sua ricerca si concentra principalmente sulla polarizzazione del Fondo Cosmico a Microonde (CMB)\, sull’emissione nelle microonde della Via Lattea e sull’analisi dei dati per gli esperimenti CMB. Dopo 4 anni di studio di Dottorato di Ricerca presso la SISSA di Trieste si è trasferito in California per proseguire le sue ricerche presso le università di Stanford e Berkeley per 5 anni. Da un paio di anni è ritornato a Catania come ricercatore presso l’Università di Catania. \n\n \n \n \n \n \n  \n\n Ingresso libero fino a esaurimento dei posti disponibili URL:https://www.oact.inaf.it/event/pint-of-science-2025-viaggio-cosmico-a-sorsi-di-birra/ LOCATION:Joyce Irish pub\, Via Montesano 46\, Catania\, 95131\, Italia CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/05/Screenshot-2025-05-16-alle-17.01.58.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250526T111500 DTEND;TZID=UTC:20250526T121500 DTSTAMP:20260404T205627 CREATED:20250524T100517Z LAST-MODIFIED:20250524T100520Z UID:18154-1748258100-1748261700@www.oact.inaf.it SUMMARY:Quantum Computing for Astrophysics and Cosmology: Opportunities and Challenges DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Monday\, May 26\, 11:15 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER:Farida Farsian (OACT-INAF) \nABSTRACT:The rapid advancement of quantum computing technologies is opening new frontiers across various scientific disciplines. As quantum devices continue to evolve\, investigating their potential to tackle complex computational problems in astrophysics and cosmology becomes essential.In this seminar\, I will present an overview of my recent research focused on the application of quantum computing and quantum machine learning techniques to astrophysical and cosmological problems. In particular\, I will discuss the implementation and capabilities of quantum neural networks in analyzing astrophysical data\, as well as the application of quantum Fourier transform in Cosmic Microwave Background data analysis.The talk will highlight both the promising opportunities and the current limitations of these quantum approaches\, providing a perspective on how quantum computing could contribute in data analysis and modeling in astrophysics in the near future. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/quantum-computing-for-astrophysics-and-cosmology-opportunities-and-challenges/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/05/WhatsApp-Image-2025-05-13-at-15.09.52.jpeg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250609T113000 DTEND;TZID=UTC:20250609T130000 DTSTAMP:20260404T205627 CREATED:20250608T222854Z LAST-MODIFIED:20250609T093354Z UID:18302-1749468600-1749474000@www.oact.inaf.it SUMMARY:Riconoscere e Contrastare la Violenza maschile sulle Donne DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Monday\, June 9\, 11:10 a.m. \nORGANIZER: CUG INAF and INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/scz-gftb-xry \nSPEAKER: dott.ssa Anna Agosta (presidente del Centro Antiviolenza di Catania Thamaia) \nABSTRACT (English below):L’Associazione Thamaia Onlus\, attiva dal 2001\, è una Organizzazione Non Lucrativa di Utilità Sociale impegnata nella promozione della qualità della vita di donne e minori vittime di violenza e maltrattamenti familiari. Oltre alla gestione\, dal 2003\, del Centro Antiviolenza per donne che subiscono maltrattamenti\, violenza sessuale e stalking\, Thamaia svolge un’intensa attività di sensibilizzazione e formazione rivolta alla cittadinanza\, alle scuole\, ai servizi socio-sanitari e alle Forze dell’Ordine\, con l’obiettivo di prevenire la violenza di genere e promuovere la cultura della legalità.L’Associazione è parte attiva del Forum Permanente contro le molestie e la violenza di genere (L.R. 3/2012) e coordina\, dal 2008\, la Rete Antiviolenza Interistituzionale della provincia di Catania\, che coinvolge numerosi enti pubblici e privati. Inoltre\, è socia di D.i.Re. – Donne in rete contro la violenza e del CISMAI\, consolidando il proprio ruolo come punto di riferimento sul territorio.In occasione dell’intervento richiesto dall’NAF di Catania\, l’Associazione intende offrire un approfondimento sul fenomeno della violenza maschile contro le donne\, affrontandolo come questione culturale e sociale. L’incontro sarà l’occasione per: \n\nriflettere sull’incidenza e sulla rappresentazione del fenomeno attraverso dati concreti;\nanalizzare le dinamiche\, le forme e le conseguenze della violenza sulla vita delle donne;\nfornire strumenti utili per il riconoscimento e il contrasto della violenza di genere in ambito lavorativo e sociale.\n\n  \n“Recognizing and Combating Male Violence Against Women”\nABSTRACTThamaia Onlus Association\, active since 2001\, is a Non-Profit Organization of Social Utility committed to promoting the quality of life of women and minors who are victims of domestic violence and abuse. Since 2003\, the association has managed a Women’s Anti-Violence Center\, supporting women who experience abuse\, sexual violence\, and stalking. Thamaia also carries out extensive awareness-raising and training activities aimed at the general public\, schools\, social and health services\, and law enforcement agencies\, with the goal of preventing gender-based violence and promoting a culture of legality.The association plays an active role in the Permanent Forum against Harassment and Gender-Based Violence (Regional Law 3/2012) and\, since 2008\, has coordinated the Interinstitutional Anti-Violence Network of the province of Catania\, which includes numerous public and private entities. Additionally\, Thamaia is a member of D.i.Re – Women Against Violence Network and CISMAI\, further consolidating its role as a key reference point in the region.As part of the initiative requested by INAF Catania\, the association aims to provide an in-depth look at the phenomenon of male violence against women\, addressing it as a cultural and social issue. The meeting will offer an opportunity to: \n\nreflect on the prevalence and portrayal of the phenomenon using concrete data;\nanalyze the dynamics\, forms\, and consequences of violence on women’s lives;\nprovide practical tools to recognize and combat gender-based violence in both the workplace and society\n\nThe seminar will be held in Italian\, with English subtitles. For those interested\, the presentation slides will also be made available in English. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/riconoscere-e-contrastare-la-violenza-maschile-sulle-donne/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/06/Locandine-eventi-OACT-4.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250907T193000 DTEND;TZID=UTC:20250907T230000 DTSTAMP:20260404T205627 CREATED:20250904T102807Z LAST-MODIFIED:20250907T171401Z UID:18663-1757273400-1757286000@www.oact.inaf.it SUMMARY:Osservazione dell'eclissi totale di Luna DESCRIPTION:In occasione dell’eclissi totale di Luna che si verificherà domenica 7 settembre\, e nell’ambito delle iniziative della Notte Europea dei Ricercatori 2025 coordinate dall’Università degli Studi di Catania\, l’INAF-Osservatorio Astrofisico di Catania vi invita a partecipare alle osservazioni pubbliche che si terranno in Piazza Europa (lato mare vicino ingresso Borghetto\, vedi mappa)  a Catania\, a partire dalle ore 19:30. \nLe osservazioni saranno effettuate con i telescopi messi a disposizione dal Gruppo Astrofili Catanesi.Alcuni ricercatori dell’INAF saranno presenti per spiegare il fenomeno osservato e rispondere a tutte le vostre domande e curiosità. \nDopo la fine della fase di totalità\, continueremo con l’osservazione di Saturno. L’evento si concluderà alle ore 23:00. \nDi seguito gli orari e le fasi dell’eclissi visibili da Catania:17:28 – Inizio fase penombrale (non visibile\, Luna ancora sotto l’orizzonte)18:28 – Inizio fase di eclissi parziale (non visibile\, Luna ancora sotto l’orizzonte)19:31 – Inizio fase di eclissi totale (inizialmente non visibile)19:40 – La Luna sorge dall’orizzonte a Est\, già in fase di totalità20:12 – Massimo dell’eclisse20:53 – Fine fase di eclissi totale\, inizio eclissi parziale21:56 – Fine eclissi parziale\, inizio fase penombrale \n\nIngresso libero senza prenotazione Vi aspettiamo numerosi per condividere insieme questo momento spettacolare!\n \nIl Gruppo Astrofili Catanesi organizza l’osservazione dell’eclissi e di Saturno\, con le stesse modalità dell’iniziativa di Piazza Europa\, anche presso il palazzo Recupero-Cutore di Aci Bonaccorsi. URL:https://www.oact.inaf.it/event/osservazione-delleclissi-totale-di-luna/ LOCATION:Piazza Europa\, Catania\, Piazza Europa\, Catania\, Italy CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/09/locandina_eclissi-Luna_v3.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250926T180000 DTEND;TZID=UTC:20250926T233000 DTSTAMP:20260404T205628 CREATED:20250923T155418Z LAST-MODIFIED:20250927T182622Z UID:18736-1758909600-1758929400@www.oact.inaf.it SUMMARY:Notte Europea dei Ricercatori 2025 DESCRIPTION:SHARPER è il nome di uno dei progetti italiani sostenuti dalla Commissione Europea per la realizzazione della Notte Europea dei Ricercatori. \nSHARPER significa SHAring Researchers’ Passion for Enhanced Roadmaps e ha l’obiettivo di coinvolgere tutti i cittadini nella scoperta del mestiere di ricercatore e del ruolo che i ricercatori svolgono nel costruire il futuro della società attraverso l’indagine del mondo basata sui fatti\, le osservazioni e l’abilità nell’adattarsi e interpretare contesti sociali e culturali sempre più complessi e in continua evoluzione. \nPer l’edizione 2025\, SHARPER si svolgerà il 26 settembre in 15 città italiane\, tra cui Catania\, per raccontare la passione\, le scoperte e le sfide dei ricercatori di tutta Europa attraverso mostre\, spettacoli\, concerti\, giochi\, conferenze e centinaia di altre iniziative rivolte al grande pubblico. \nIn occasione della Notte dei Ricercatori 2025\, l’INAF-Osservatorio Astrofisico di Catania ha organizzato le seguenti attività per il pubblico: \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nData e ora: 26-09-2025 dalle 18:00 alle 23:30Luogo: Cortile Platamone (stand n. 15)\, Via Vittorio Emanuele II\, 121 – Catania \nINGRESSO LIBERO \n\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nL’ASTROFISICA PER IL FUTURO – I nostri ricercatori guideranno i visitatori alla scoperta dei progetti di ricerca dell’INAF-Osservatorio Astrofisico di Catania. Presso il nostro stand sarà possibile partecipare alle seguenti attività: \n\nConcorso per gli studenti delle scuole primarie “Disegna il tuo pianeta reale o immaginario”. \nGioco a premi per tutti “Chi vuol essere astrofisico”.\nEsperienze di realtà virtuale per la visualizzazione di dati astrofisici.\n\n\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nData e ora: 26-09-2025 dalle 20:30 alle 23:30 \n\n\n\n\nLuogo: Terrazza Cortile Platamone\, Via Vittorio Emanuele II\, 121 – Catania \nINGRESSO LIBERO \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\nOSSERVAZIONI DI SATURNO AL TELESCOPIO – I nostri ricercatori guideranno i visitatori nell’osservazione al telescopio del pianeta Saturno  URL:https://www.oact.inaf.it/event/notte-europea-dei-ricercatori-2025/ LOCATION:Cortile Platamone\, via Vittorio Emanuele II\, 121\, Catania\, Italy CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/png:https://www.oact.inaf.it/wp-content/uploads/2024/09/sharper-2024-condivisione-fb-1.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250929T110000 DTEND;TZID=UTC:20250929T120000 DTSTAMP:20260404T205628 CREATED:20250915T101627Z LAST-MODIFIED:20250927T182741Z UID:18701-1759143600-1759147200@www.oact.inaf.it SUMMARY:The Fossil Groups puzzle: ancient relics or young pretenders? DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Monday\, September 29\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Stefano Zarattini (Centro de Estudios de Física del Cosmos de Aragón – CEFCA) \nABSTRACT:Fossil groups (FGs) were initially believed to represent the end stage of galaxy group evolution\, characterised by a significant luminosity gap between their two brightest member galaxies which was seen as an indicator of their advanced age. In this picture\, FGs were thought to undergo a long passive evolution in which their bright satellites gradually merged into the central galaxy\, making them fossil relics of the ancient Universe. However\, results from the Fossil Group Origins (FOGO) project suggest a paradigm shift: FGs are not necessarily old\, but rather isolated systems whose location within the cosmic web primarily regulates their evolution. In this scenario\, the magnitude gap arises at low redshift thanks to the infall of galaxies on radial orbits\, which enhances the merging rate observed in FGs. \nIn this seminar\, I will review the progress achieved over the last 15 years that led to this new interpretation. I will discuss the luminosity functions\, substructures\, cosmic web environment\, and orbital distribution of FG galaxies\, also highlighting the view of FGs as transitional systems. Numerical simulations will also be presented to support the observational evidence\, reinforcing the idea that the magnitude gap is a relatively recent feature rather than the imprint of an early formation epoch. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/the-fossil-groups-puzzle-ancient-relics-or-young-pretenders/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/09/Captura-de-pantalla-2025-09-15-a-las-10.08.26.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250930T110000 DTEND;TZID=UTC:20250930T120000 DTSTAMP:20260404T205628 CREATED:20250926T084534Z LAST-MODIFIED:20250926T084537Z UID:18772-1759230000-1759233600@www.oact.inaf.it SUMMARY:The next-generation Very Large Array: Project Summary and Update DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Tuesday\, September 30\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER:Dr. Eric J. Murphy (NRAO) \nABSTRACT:Inspired by dramatic discoveries from the Jansky VLA\, VLBA\, and ALMA\, a large collecting area radio interferometer that will open new discovery space from proto-planetary disks to distant galaxies is being designed by the U.S. National Radio Astronomy Observatory (NRAO) and the broad scientific and technical communities.  The next-generation VLA (ngVLA)\, which was strongly endorsed by the Astro2020 Decadal Survey as an essential research facility whose construction should begin this decade\, is envisaged as an interferometric array with ten times greater sensitivity and spatial resolution than the current VLA and ALMA\, operating in the frequency range of 1.2 – 116 GHz.  Replacing both the VLA and VLBA\, the ngVLA will be optimized for observations in the spectral region between the superb performance of ALMA at mm and sub-mm wavelengths\, and the future Phase I Square Kilometer Array (SKA-1) at decimeter-scale and longer wavelengths.  As such\, the ngVLA will uniquely tackle a broad range of outstanding scientific questions in modern astronomy by simultaneously delivering the capability to: unveil the formation of Solar System analogues on terrestrial scales; probe the initial conditions for planetary systems and life with astrochemistry; characterize the assembly\, structure\, and evolution of galaxies from the first billion years to the present; use pulsars in the Galactic center as fundamental tests of gravity; and understand the formation and evolution of stellar and supermassive blackholes in the era of multi-messenger astronomy.  In this presentation\, I will provide a project update and discuss the overall science case that led to the current technical design of the ngVLA. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/the-next-generation-very-large-array-project-summary-and-update/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/09/Title.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20251004T183000 DTEND;TZID=UTC:20251004T220000 DTSTAMP:20260404T205628 CREATED:20251001T080706Z LAST-MODIFIED:20251001T080709Z UID:18851-1759602600-1759615200@www.oact.inaf.it SUMMARY:Stregati dalla Luna DESCRIPTION:Vi invitiamo a partecipare all’iniziativa “Stregati dalla Luna”\, che si svolgerà sabato 4 ottobre presso il Museo Diocesano di Catania – via Etnea\, 8\n \nL’organizzazione è curata dall’Istituto Nazionale di Astrofisica (INAF)\, dal Comitato Italiano per il Controllo delle Affermazioni sulle Pseudoscienze (CICAP) e dal Gruppo Astrofili Catanesi (GAC) ed è ospitata dal Museo Diocesano di Catania\n \n \n \n \n \n Programma\n– 18:30 – Conferenza “La conquista della Luna: dalle missioni Apollo ad Artemis”\nRelatore G. Cutispoto (INAF – Osservatorio Astrofisico di Catania)\nIngresso libero fino a esaurimento dei posti disponibili\n \n– 20:00 – 22:00 – Osservazione della Luna e di Saturno dalla terrazza del Museo Diocesano con i telescopi del GAC\nIngresso libero\n \n \n \n \n \n \n \n \nLa Notte della Luna (International Observe the Moon Night) è un evento di divulgazione internazionale promosso dalla NASA\, che si svolge dal 2010 e che riuscuote anno dopo anno un crescente successo (https://moon.nasa.gov/observe-the-moon-night/about/overview/).\n \n\nIn Italia l’iniziativa è stata ribattezzata “Stregati dalla Luna” e si svolgerà in numerose località su tutto il territorio nazionale. URL:https://www.oact.inaf.it/event/stregati-dalla-luna/ LOCATION:Cortile Platamone\, via Vittorio Emanuele II\, 121\, Catania\, Italy CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/10/Luna-2025-5.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20251201T110000 DTEND;TZID=UTC:20251201T120000 DTSTAMP:20260404T205628 CREATED:20251128T143218Z LAST-MODIFIED:20251128T143221Z UID:19096-1764586800-1764590400@www.oact.inaf.it SUMMARY:Asteroseismic and spectroscopic study of NGC1647 DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Monday\, December 1\, 11:00 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Mingfeng Qin (Beijing Normal University) \nABSTRACT:NGC1647 is a poorly studied open cluster\, with considerable discrepancies in age reported in previous works. To improve the precision of its characterization\, we applied HDBSCAN clustering in astrometric space\, complemented by radial-velocity filtering\, and identified 271 high-confidence cluster members. I will show as isochrone fitting to extinction-corrected photometry can provide a preliminary cluster age range. From TESS and K2 time-series photometry\, we identified 95 periodic variables\, including nine p-mode pulsators. By fitting stellar evolutionary models to these p-mode pulsators\, we derived “asteroseismic” cluster parameters\, Age and Metallicity. The seismic metallicity is consistent with spectroscopic estimates\, while the derived age exhibits significantly higher precision than traditional isochrone-based results. Moreover\, we analyzed LAMOST spectra using the ROTFIT tool and performed SED fitting to determine cluster extinction and conduct gyrochronology studies. This combined approach provides a refined benchmark for the fundamental parameters of NGC1647. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/asteroseismic-and-spectroscopic-study-of-ngc1647/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2025/11/NGC1647_talk_Catania_page-0001.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20260122T110000 DTEND;TZID=UTC:20260122T120000 DTSTAMP:20260404T205628 CREATED:20260115T110917Z LAST-MODIFIED:20260120T171121Z UID:19332-1769079600-1769083200@www.oact.inaf.it SUMMARY:Magnetic activity nesting on the Sun and low-mass stars: Results from nearly continuous monitoring of solar active nests with ESA’s Solar Orbiter DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Thursday\, January 22\, 11:30 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Adam Finley (ESA Noordwijk) \nABSTRACT:The magnetic activity of low-mass stars\, driven by the interplay of convection and rotation in their interiors\, is fundamental to their evolution and significantly affects the search for habitable exoplanets. Magnetic activity manifests at the surface as “spots” (or active regions) that influence the circumstellar environment through energetic radiation and eruptive events (flares and coronal mass-ejections\, collectively termed “space weather”). The Sun exhibits a well-known 11-year activity cycle where spot emergence drifts from mid to low latitudes. However\, one puzzling feature of the solar dynamo is the repeated emergence of spots in close proximity\, which leads to long-lived sources of magnetic activity known as active nests. Nesting is observed on other low-mass stars\, suggesting it is an innate\, universal feature of stellar dynamos. It is theorized that non-axisymmetries in the generation and storage of the magnetic field preference the emergence of spots at specific latitudes and longitudes\, leading to nesting. This phenomenon has consequences for predicting space weather near Earth and understanding the secular evolution of exoplanetary atmospheres. Studies of solar active nests have been limited by our single viewpoint from Earth. But with ESA’s Solar Orbiter now monitoring the Sun’s far-side for several months each year\, multi-viewpoint observations provide a pathway to study the formation and evolution of active nests. So far we have identified an active nest in 2022 that was responsible for 50–70% of all solar flares across the entire solar surface over five months (a prolific flare factory). In addition\, we saw a dramatic intensification of solar flare activity in 2024 following the collision of two active nests. These continuous\, multi-viewpoint observations strengthen the connection between solar activity and the nesting observed on other low-mass stars\, a link that will be further explored with ESA’s PLATO mission. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/magnetic-activity-nesting-on-the-sun-and-low-mass-stars-results-from-nearly-continuous-monitoring-of-solar-active-nests-with-esas-solar-orbiter/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2026/01/Finley_titleslide.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20260223T113000 DTEND;TZID=UTC:20260223T123000 DTSTAMP:20260404T205628 CREATED:20260217T114411Z LAST-MODIFIED:20260217T114440Z UID:19430-1771846200-1771849800@www.oact.inaf.it SUMMARY:Inferring past accretion bursts from asteroseismic imprints DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Monday\, February 23\, 11:30 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER:Johannes Jørgensen (Innsbruck University) \nABSTRACT:Stars form during the collapse of dense molecular cloud cores. However\, most of their final mass comes from the ensuing protostellar disk\, owing to non-zero angular momentum in the cloud. Here\, the protostar gains up to 50% of its final mass in episodic bursts of mass accretion\, while having quiescent phases between the bursts. In this presentation I present a study of how the occurrence of such bursts may be inferred using asteroseismology – the study of stellar pulsations. Specifically\, I show how these intense episodes leave a detectable asteroseismic imprint in the deep stellar interior. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. URL:https://www.oact.inaf.it/event/inferring-past-accretion-bursts-from-asteroseismic-imprints/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2026/02/astrophysical_seminar.001.jpeg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20260224T111500 DTEND;TZID=UTC:20260224T123000 DTSTAMP:20260404T205628 CREATED:20260219T161017Z LAST-MODIFIED:20260219T161020Z UID:19450-1771931700-1771936200@www.oact.inaf.it SUMMARY:L’Office of Astronomy for Education Center Italy: che cosa è\, che cosa fa e perché lo fa in quel modo. DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Tuesday\, February 24\, 11:15 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Stefano Sandrelli (INAF O.A. Brera) \nABSTRACT:Fondato nel marzo 2021\, l’Office of Astronomy for Education Center Italy (I-OAE) è un ufficio internazionale della IAU\, coordinato e finanziato da INAF. I-OAE promuove e sostiene pratiche di insegnamento innovativo\, centrato sulla persona\, e di corsi di formazione docenti.Nei suoi primi anni di esistenza\, I-OAE ha sviluppato processi collaborativi\, a cui hanno partecipato rappresentanti di Albania\, Cipro\, Croazia\, Egitto\, Francia\, Grecia\, Israele\, Italia\, Marocco\, Montenegro\, Palestina\, Portogallo\, Slovenia\, Siria\, Spagna e Turchia.  Non solo il network è costante crescita\, ma si sta dimostrando anche di attrarre fondi europei.I-OAE coordina anche l’edizione internazionale di astroEDU\, la piattaforma di attività didattiche peer-reviewed della IAU.I-OAE è un ufficio aperto alla collaborazione di volontari che ne condividano valori e metodi. \n  \nRicordiamo poche regole:— accedere alla virtual room con microfono e telecamera spenti— scrivete eventuali domande nella chat\, a cui verrà data risposta alla fine del webinar— connettersi al webinar utilizzando preferibilmente l’account INAF e il browser Chrome \n  URL:https://www.oact.inaf.it/event/loffice-of-astronomy-for-education-center-italy-che-cosa-e-che-cosa-fa-e-perche-lo-fa-in-quel-modo/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2026/02/2026.02.17_OAE@Sedi_Pagina_01.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20260227T111500 DTEND;TZID=UTC:20260227T123000 DTSTAMP:20260404T205628 CREATED:20260224T095744Z LAST-MODIFIED:20260224T114110Z UID:19458-1772190900-1772195400@www.oact.inaf.it SUMMARY:The EWOCS view of supermassive stellar clusters DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Friday\, February 27\, 11:15 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: M. G. Guarcello and the EWOCS Team \nABSTRACT:Star formation in our Galaxy typically occurs in environments less massive than 10^4 solar masses. However\, a few more extreme star forming environments on the Milky Way exist\, where hundreds of thousands to millions of stars form in dense regions. Often called “supermassive star clusters”\, they are rare in our Galaxy today\, while they are common in galaxies experiencing epochs of starburst. The international project EWOCS (Extendend Westerlund 1 and 2 Open Clusters Survey) is targeting the two closest superstar clusters in the Milky Way with a multi-wavelengtht survey which is based on an extensive set of data from radio to X-rays\, with the main objective of studying the formation and early evolution of stars over the whole mass spectrum in a starburst environment.In this talk\, I will discuss the motivations and objectives of the project\, the published results\, ongoing studies and the future developments. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. \n  URL:https://www.oact.inaf.it/event/the-ewocs-view-of-supermassive-stellar-clusters/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2026/02/Locandina-evento-EWOCS-OACT.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20260310T113000 DTEND;TZID=UTC:20260310T123000 DTSTAMP:20260404T205628 CREATED:20260309T084132Z LAST-MODIFIED:20260309T084700Z UID:19489-1773142200-1773145800@www.oact.inaf.it SUMMARY:Our Universe in Simulation DESCRIPTION:Recording: https://www.oact.inaf.it/seminars/ \nDATE: Tuesday\, March 9\, 11:30 a.m. \nORGANIZER: INAF-OACT \nLOCATION: AULA OVEST (INAF-OACT) + remote \nLink for the remote audience:https://meet.google.com/wvf-uwxo-oyj \nSPEAKER: Jia Liu (Kavli IPMU – University of Tokyo) \nABSTRACT:Ongoing and upcoming cosmological surveys—including the Simons Observatory\, LiteBIRD\, Rubin LSST\, Euclid\, DESI\, PSF\, SPHEREx\, and the Roman Space Telescope—will deliver observations of unprecedented precision. Joint analyses across these surveys will be essential for uncovering fundamental physics\, including the nature of inflation\, dark energy\, dark matter\, neutrino mass\, and more. In this talk\, I will discuss the opportunities\, challenges\, and strategies for simulating our universe across multiple wavelengths to realize these goals. \n  \nA few rules:— before joining\, make sure you are using your institutional inaf.it account if you have one (otherwise we will grant you permission to join)— please do not forget to mute your microphone and switch off your webcam when access the virtual room— for questions leave a message in the chat\, the answers at the end of the webinar— the seminar will be recorded\, so if you are interested in it\, please contact us to get the link to the registration. \n  URL:https://www.oact.inaf.it/event/our-universe-in-simulation/ LOCATION:Sede A. Riccò\, Via Santa Sofia 78\, Catania CATEGORIES:Eventi & Seminari ATTACH;FMTTYPE=image/jpeg:https://www.oact.inaf.it/wp-content/uploads/2026/03/seminario_Liu.jpg END:VEVENT END:VCALENDAR