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DTSTART:20070311T020000
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DTSTAMP:20250922T122236
DTSTART;TZID=America/Detroit:20251201T140000
DTEND;TZID=America/Detroit:20251201T150000
SUMMARY:Social / Informal Gathering:German Convo on the Go
DESCRIPTION:Meet at Burton Tower for a 1-hour walk and talk in German with Mary Gell (magell@umich.edu). This event happens 'rain or shine.' Open to speakers of German at all levels.
UID:138770-21883876@events.umich.edu
URL:https://events.umich.edu/event/138770
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Germanic Languages And Literatures
LOCATION:Burton Memorial Tower
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20251117T094552
DTSTART;TZID=America/Detroit:20251201T150000
DTEND;TZID=America/Detroit:20251201T160000
SUMMARY:Workshop / Seminar:HEP-Astro Seminar | Dark Bondi Accretion Aided by Baryons and the Origin of JWST Little Red Dots
DESCRIPTION:The gravothermal core collapse of self-interacting dark matter halos provides a compelling mechanism for seeding supermassive black holes in the early Universe. In this scenario\, a small fraction of a halo\, approximately 1% of its mass\, collapses into a dense core\, which could further evolve into a black hole. We demonstrate that this process can account for the origin of JWST little red dots (LRDs) observed at redshifts 𝑧∼4–11\, where black holes with masses of 10^7M⊙ can form within 500 Myr after the formation of host halos with masses of 10^9M⊙. Even if the initial collapse region triggering general-relativistic instability has a mass on the order of one solar mass\, the resulting seed can grow into an intermediate-mass black hole via Eddington accretion of baryonic gas. Subsequently\, it can continue to grow into a supermassive black hole through dark Bondi accretion of dark matter particles. In this scenario\, the majority of the black hole's mass originates from dark matter accretion rather than baryonic matter\, naturally explaining the overmassive feature of LRDs.
UID:141939-21889658@events.umich.edu
URL:https://events.umich.edu/event/141939
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Physics,Science
LOCATION:West Hall - 340
CONTACT:
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