BEGIN:VCALENDAR VERSION:2.0 PRODID:-//IAP calendar product//iap.fr// CALSCALE:GREGORIAN X-WR-CALNAME:IAP seminars BEGIN:VTIMEZONE TZID:Europe/Paris BEGIN:STANDARD DTSTART:19961027T030000 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:CET TZOFFSETFROM:+0200 TZOFFSETTO:+0100 END:STANDARD BEGIN:DAYLIGHT DTSTART:19810329T020000 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 TZNAME:CEST TZOFFSETFROM:+0100 TZOFFSETTO:+0200 END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT SUMMARY:Decoding Galaxies & Star Formation Feedback with 100\,000 Star Clu sters: PHANGS-HST & JWST today\, the future with HWO DTSTART;TZID=Europe/Paris:20260213T110000 DTEND;TZID=Europe/Paris:20260213T120000 DTSTAMP:20260213T105100Z UID:2026-02-1311:00:00+00:09"DecodingGalaxies&StarFormationFeedbackwith100 \,000StarClusters:PHANGS-HST&JWSTtoday\,thefuturewithHWO"_G6hTmLBLIGeltFcM CRuj DESCRIPTION:Janice Lee\nSpace Telescope Science Inst. (STScI)\, Baltimore\ , Maryland\, Etats-Unis d'Amérique\n\n\nAbstract: The PHANGS-HST and JWST Treasury Programs have produced the most extensive inventories to date of optically visible and dust-embedded star clusters across nearby galaxies. A coherent picture is emerging of the earliest phases of cluster evolutio n\, built from complementary studies that consistently point to short dust -clearing timescales (?3 Myr)\, in agreement with earlier optical studies. Together\, these results underscore the central role of early\, pre-super nova feedback in regulating the star formation cycle. Drawing on the stat istical power of tens of thousands of clusters spanning dozens of galaxies \, I will synthesize what PHANGS and related programs have revealed about cluster evolution\, feedback\, and the use of clusters as “clocks” for timing key phases of star formation. Looking ahead\, I will highlight wor k on the Habitable Worlds Observatory\, NASA’s next flagship astrophysic s mission after Roman\, which will operate as a true “Super-Hubble\,” with UV–optical capabilities to transform star cluster studies and a bro ad range of fields across astrophysics.\n LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:At the dawn of galaxies: dust enrichment and rise of early black h oles DTSTART;TZID=Europe/Paris:20260220T110000 DTEND;TZID=Europe/Paris:20260220T120000 DTSTAMP:20260220T105100Z UID:2026-02-2011:00:00+00:09"Atthedawnofgalaxies:dustenrichmentandriseofea rlyblackholes"_eD5l8agNGNWvo6qNOPYz DESCRIPTION:Raffaella Schneider\nUniv. Rome La Sapienza\, Rome\, Italie\n\ n\nAbstract: Recent observations with JWST and ALMA are transforming our v iew of the high-redshift Universe\, revealing a population of early galaxi es that appears significantly more mature than previously anticipated. The slow evolution of the UV luminosity function\, the widespread presence of accreting black holes\, and the unexpectedly high levels of metal and dus t enrichment all suggest that galaxy evolution at cosmic dawn proceeds wit h remarkable efficiency.\n\nIn this talk\, I will present a theoretical pe rspective on these findings\, using semi-analytical models and cosmologica l simulations confronted with JWST and ALMA observations to explore some o f the physical processes that have shaped the first billion years of cosmi c history.\n\n\n LOCATION:Salle des séminaires Évry Schatzman END:VEVENT BEGIN:VEVENT SUMMARY: From the Last Scattering Surface to Large-Scale Structure: Cohere nt Modeling of Cosmology and Astrophysics DTSTART;TZID=Europe/Paris:20260306T110000 DTEND;TZID=Europe/Paris:20260306T120000 DTSTAMP:20260306T105100Z UID:2026-03-0611:00:00+00:09"FromtheLastScatteringSurfacetoLarge-ScaleStru cture:CoherentModelingofCosmologyandAstrophysics"_37E9W0wtgwvAo51nWm7B DESCRIPTION:Laura Salvati\nInstitut d'Astrophysique Spatiale\, Orsay\, Fra nce\n\n\nAbstract: Recent cosmological observations have revealed increasi ng tensions between different probes of the Universe. While these discrepa ncies may hint at physics beyond the standard cosmological model\, it is e ssential to carefully assess the role of astrophysical processes that coul d bias our interpretation of the data. In particular\, understanding how a strophysics influences the late-time evolution of the Universe is crucial before invoking new fundamental physics.\nAddressing this challenge requir es a coherent modeling framework that connects the Last Scattering Surface to the formation of Large-Scale Structure\, consistently accounting for a strophysical effects along the way. One promising approach is to develop a unified description of the Cosmic Microwave Background (CMB) and its fore ground signals. Importantly\, many extragalactic foregrounds are not merel y contaminants\, but valuable cosmological and astrophysical tracers of st ructure formation.\nNevertheless\, most current CMB analyses rely on simpl ified template descriptions of foregrounds\, which do not fully exploit th eir underlying cosmological and astrophysical information. I will show how implementing a physically consistent modeling of the thermal and kinetic Sunyaev–Zeldovich effects can both tighten cosmological constraints from the CMB and contribute to a unified framework that connects early-Univers e physics to the late-time evolution of large-scale structure. The thermal Sunyaev–Zeldovich (tSZ) effect traces hot ionized gas and provides a po werful tool for detecting and studying galaxy clusters. The kinetic Sunyae v–Zeldovich (kSZ) effect\, sensitive to the bulk motion of ionized gas\, offers unique insight into the distribution of baryons and the epoch of r eionization. Together\, these observables help bridge early- and late-time cosmology within a consistent physical framework.\n LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:Strong gravitational lensing DTSTART;TZID=Europe/Paris:20260312T113000 DTEND;TZID=Europe/Paris:20260312T123000 DTSTAMP:20260312T112100Z UID:2026-03-1211:30:00+00:09"Stronggravitationallensing"_GVsnvTAMFmU2vQILR kHA DESCRIPTION:Christophe Alard\n\nAbstract: Strong gravitational lensing is entering a new era. Euclid will deliver over 100\,000 lenses across 15\,00 0 square degrees with good resolution\, far surpassing current surveys. Co nventional lens modeling is degenerate\, biased\, and non-universal\, prev enting reliable population statistics. To unlock the full potential of thi s unprecedented dataset\, we need a universal\, model-independent approach . The singular perturbative method provides exactly that. I will explain t he basics of the method\, demonstrate its effectiveness on a number of HST lenses\, and show how reliable statistics of a large lens population can be built with this new approach\, opening a transformative era for strong lensing science.\n\n LOCATION:Salle Entresol Daniel Chalonge END:VEVENT BEGIN:VEVENT SUMMARY:Autisme et emploi dans le monde académique\, éléments de compr éhension et d’accompagnement DTSTART;TZID=Europe/Paris:20260313T110000 DTEND;TZID=Europe/Paris:20260313T120000 DTSTAMP:20260313T105100Z UID:2026-03-1311:00:00+00:09"Autismeetemploidanslemondeacadémique\,élém entsdecompréhensionetd’accompagnement"_hbDav0Yh4AkkBDgn78qr DESCRIPTION:Faby Cazalis-Judet de la Combe et Taline Gulgulyan\n\nAbstract : Le spectre de l’autisme est assez vaste et riche de profils variés po ur que l’on puisse rencontrer des personnes concernées dans tous les do maines scientifiques\, et à tous les niveaux de poste. De fait\, la reche rche peut constituer un métier attractif pour les individus appréciant d e se consacrer totalement à un sujet d’intérêt et présentant un quot ient de systématisation élevé ainsi qu’une faible tolérance à l’a pproximation. De plus\, les modalités de communication sociale entre scie ntifiques peuvent (ou pouvaient) répondre à certains des besoins particu liers des personnes autistes. Lors de ce séminaire\, en abordant la notio n de phénotype étendu et de traits autistiques sous influence génétiqu e\, nous saisirons pourquoi la question de l’autisme résonne fort chez nombre de nos collègues. Nous décrirons les facettes de la diversité co gnitive et des formes de handicap associées\, ainsi que la vulnérabilit é aux comorbidités. Nous discuterons aussi des éléments sociétaux int éressant l’autisme et pouvant impacter la vie professionnelle (victimis ation\, discrimination à l’accès au diagnostic\, validisme\, intersect ionnalité). Nous passerons en revue quelques éléments pratiques de comp réhension sur l’accès et le maintien en emploi des personnes autistes\ , et notamment sur les modalités d’accueil et d’aménagement\, sous f orme de recommandations adressées autant aux personnes concernées qu’ à leur collègues et à leur hiérarchie. Enfin\, nous terminerons en att irant l’attention sur les bénéfices à long-terme que toute équipe de recherche aurait à devenir « autist-friendly ».\n LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:Giant radio sources and their episodic nuclear activity DTSTART;TZID=Europe/Paris:20260320T110000 DTEND;TZID=Europe/Paris:20260320T120000 DTSTAMP:20260320T105100Z UID:2026-03-2011:00:00+00:09"Giantradiosourcesandtheirepisodicnuclearactiv ity"_Xt1wjiLDx0LO3GHwoow6 DESCRIPTION:Dhruba Saikia\nUniv. Bielefeld\, Bielefeld\, Allemagne\n\n\nAb stract: Radio galaxies and quasars are among the most luminous and largest single structures in our Universe ranging in size from parsecs to several Mpc. The giant radio sources (GRSs)\, defined to be those with a projecte d linear size >700 kpc\, pose a number of interesting astrophysical questi ons and are also valuable probes of the intergalactic environment. We exam ine critically different scenarios for their formation and evolution inclu ding insights from our discovery of such large sources associated with nar row line Seyfert 1 galaxies\, which are believed to harbour lower mass sup er-massive black holes.\nGiant radio sources are believed to be inclined a t large angles to the line of sight\, unlike blazars whose jets are almost pointed at us. The bulk of the active galactic nuclei (AGN) detected at g amma rays are associated with blazars. However\, from a careful multi-wave length study\, we have been able to identify a significant population of m isaligned gamma-ray emitting AGN associated with radio galaxies\, tripling the previously known numbers. This includes a small population of GRSs\, most of which were previously unknown. We discuss the implications of thes e in our understanding of GRSs.\nOne of the most striking examples of epis odic nuclear jet activity in AGN are the double-double radio galaxies with two or more pairs of distinct lobes on opposite sides of the nucleus. Epi sodic nuclear activity has been suggested to be one of the models for the formation of GRSs. We give a brief overview of episodic nuclear activity\, and critically examine this possibility for GRSs.\nWe highlight the impor tant role that LOFAR has played in these studies\, and an even more signif icant role that SKA will play in the future.\n LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:IAP Seminar (TBA) DTSTART;TZID=Europe/Paris:20260327T110000 DTEND;TZID=Europe/Paris:20260327T120000 DTSTAMP:20260327T105100Z UID:2026-03-2711:00:00+00:09Titleandsummarytocome_G4CWlnTvqwwk2b0v1GFg DESCRIPTION:Mathilde Jauzac\nDept. Physics\, Univ. Durham\, Durham\, Royau me-Uni\n\n\n\nhttp://www.iap.fr/vie_scientifique/seminaires/seminaires.php ?nom=Seminaire_IAP&annee=2026&langue=en LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:IAP Seminar (TBA) DTSTART;TZID=Europe/Paris:20260403T110000 DTEND;TZID=Europe/Paris:20260403T120000 DTSTAMP:20260403T105100Z UID:2026-04-0311:00:00+00:09Titleandsummarytocome_WAJsSjyGqhijcNWhr0wR DESCRIPTION:Diana Dragomir\n\n\nhttp://www.iap.fr/vie_scientifique/seminai res/seminaires.php?nom=Seminaire_IAP&annee=2026&langue=en LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:IAP Seminar (TBA) DTSTART;TZID=Europe/Paris:20260410T110000 DTEND;TZID=Europe/Paris:20260410T120000 DTSTAMP:20260410T105100Z UID:2026-04-1011:00:00+00:09Titleandsummarytocome_eV0eghGmK6oc3aSp9cOE DESCRIPTION:Matteucci Maria Francesca\n Dipartimento di Fisica\, Universit à degli studi di Trieste\, Trieste\, Italie\n\n\n\nhttp://www.iap.fr/vie_ scientifique/seminaires/seminaires.php?nom=Seminaire_IAP&annee=2026&langue =en LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:IAP Seminar (TBA) DTSTART;TZID=Europe/Paris:20260417T110000 DTEND;TZID=Europe/Paris:20260417T120000 DTSTAMP:20260417T105100Z UID:2026-04-1711:00:00+00:09Titleandsummarytocome_T1Zsq9UGK5qWy6lLmpGv DESCRIPTION:Yann Gouttenoire\nInstitut d'Astrophysique de Paris\, Paris\, France\n\n\n\nhttp://www.iap.fr/vie_scientifique/seminaires/seminaires.php ?nom=Seminaire_IAP&annee=2026&langue=en LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:IAP Seminar (TBA) DTSTART;TZID=Europe/Paris:20260424T110000 DTEND;TZID=Europe/Paris:20260424T120000 DTSTAMP:20260424T105100Z UID:2026-04-2411:00:00+00:09Titleandsummarytocome_4uMgV8H5n62MgAJC5ZAl DESCRIPTION:Andrew Ronald Zentner\n\n\nhttp://www.iap.fr/vie_scientifique/ seminaires/seminaires.php?nom=Seminaire_IAP&annee=2026&langue=en LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:Journée des doctorant(e)s DTSTART;TZID=Europe/Paris:20260522T100000 DTEND;TZID=Europe/Paris:20260522T110000 DTSTAMP:20260522T095100Z UID:2026-05-2210:00:00+00:09"Journéedesdoctorant(e)s"_m8FrPHHYYup1nLlAex2 Z DESCRIPTION:Journée des doctorant(e)s\n\n\nhttp://www.iap.fr/vie_scientif ique/seminaires/seminaires.php?nom=Seminaire_IAP&annee=2026&langue=en LOCATION:Amphithéâtre Henri Mineur END:VEVENT BEGIN:VEVENT SUMMARY:Journée des post-doctorant(e)s DTSTART;TZID=Europe/Paris:20260605T110000 DTEND;TZID=Europe/Paris:20260605T120000 DTSTAMP:20260605T105100Z UID:2026-06-0511:00:00+00:09"Journéedespost-doctorant(e)s"_XgqeEAqK6Ww7pO S0PJKI DESCRIPTION:Journée des post-doctorant(e)s\n\n\nhttp://www.iap.fr/vie_sci entifique/seminaires/seminaires.php?nom=Seminaire_IAP&annee=2026&langue=en LOCATION:Amphithéâtre Henri Mineur END:VEVENT END:VCALENDAR