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DTSTART;TZID=Europe/Paris:20250912T110000
DTEND;TZID=Europe/Paris:20250912T120000
DTSTAMP:20260514T040738
CREATED:20250908T093541Z
LAST-MODIFIED:20250915T083737Z
UID:8105-1757674800-1757678400@cral.osu-lyon.fr
SUMMARY:CRAL@ENS Seminar - David Whitworth
DESCRIPTION:David Whitworth is a new postdoc at the ENS.
URL:https://cral.osu-lyon.fr/event/cralens-seminar-david-whitworth/
LOCATION:ENS
ATTACH;FMTTYPE=image/png:https://cral.osu-lyon.fr/wp-content/uploads/2023/11/image_defaut.png
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250923T110000
DTEND;TZID=Europe/Paris:20250923T120000
DTSTAMP:20260514T040738
CREATED:20250908T142403Z
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UID:8109-1758625200-1758628800@cral.osu-lyon.fr
SUMMARY:CRAL@ENS Seminar - Clement Bonnerot (University of Birmingham)
DESCRIPTION:Unleashing the predictive power of tidal disruption events\nThe tidal force from a supermassive black hole can disrupt a star passing too close\, resulting in a powerful electromagnetic flare as the stellar debris fuels the compact object. Such tidal disruption events provide a unique window into the otherwise hidden population of quiescent supermassive black holes and can offer clues to the mystery of their formation mechanism in the early Universe. With the advent of the Rubin Observatory\, we are entering an observational golden era with thousands of events expected to be discovered\, increasing our current sample by two orders of magnitude. Fully exploiting this potential requires a robust theoretical framework that characterizes the observational signatures produced and links them to the properties of the black hole and disrupted star. I will present progress toward this goal\, which relies on a suite of interlinked simulations to follow the entire evolution of tidal disruption events and predict their electromagnetic emission.
URL:https://cral.osu-lyon.fr/event/cralens-seminar-clement-bonnerot/
LOCATION:ENS
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DTSTART;TZID=Europe/Paris:20250925T140000
DTEND;TZID=Europe/Paris:20250925T163000
DTSTAMP:20260514T040738
CREATED:20250618T142341Z
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UID:8035-1758808800-1758817800@cral.osu-lyon.fr
SUMMARY:HDR defense Jérémy Fensch @ ENS
DESCRIPTION:En Salle des thèse à l’ENS.
URL:https://cral.osu-lyon.fr/event/hdr-defense-jeremy-fensch-ens/
LOCATION:ENS
ATTACH;FMTTYPE=image/png:https://cral.osu-lyon.fr/wp-content/uploads/2023/11/image_defaut.png
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DTSTART;TZID=Europe/Paris:20250926T110000
DTEND;TZID=Europe/Paris:20250926T120000
DTSTAMP:20260514T040738
CREATED:20250908T142513Z
LAST-MODIFIED:20250917T123240Z
UID:8111-1758884400-1758888000@cral.osu-lyon.fr
SUMMARY:CRAL@ENS Seminar - Stefanie Walch-Gassner (University of Cologne)
DESCRIPTION:The impact of stellar feedback on galaxies\nSmall-scale stellar feedback can impact the large-scale evolution of galaxies by regulating star formation and by driving galactic fountain flows and outflows. Using modern high-performance computing simulations\, we can study the relative importance of stellar winds\, radiation\, and supernovae in shaping the multi-phase interstellar medium. Using these simulations\, we find that pre-supernova feedback is highly relevant for regulating star formation. In particular\, the ionizing radiation of massive stars is dominating over the impact of non-ionizing radiation or stellar winds. On the other hand\, supernovae drive hot bubbles and super-bubbles with substantially higher pressure than the typical midplane pressure of a disk galaxy\, thereby pushing gas out into the circum-galactic medium. Additionally\, cosmic rays\, which are in this context most importantly accelerated by supernova shocks\, help to sustain the galactic outflow via a vertical cosmic ray pressure gradient.
URL:https://cral.osu-lyon.fr/event/cralens-seminar-steffi-walch/
LOCATION:ENS
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