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SUMMARY:The causal origin of the angular momentum and of the properties of
  galaxies - Corentin Cadiou (UCL)
DTSTART:20210903T103000Z
DTEND:20210903T113000Z
UID:TALK161473@talks.cam.ac.uk
CONTACT:Martin Haehnelt
DESCRIPTION:Understanding the origin of galaxy and dark matter properties\
 , and in particular\, their angular momentum\, is a crucial open problem. 
 Studying statistical correlations in large simulated populations sheds som
 e light\, but this approach is intrinsically limited to correlations rathe
 r than causal links.\nIn this presentation\, I will present recent numeric
 al developments that allow to uncover the causal origin of galaxy and dark
  matter properties. In particular\, I will show that the dark matter angul
 ar momentum can be predicted from the initial conditions in the very early
  Universe. I will also show that half the variation in the concentration o
 f dark matter halos can be attributed to interactions with its cosmologica
 l environment.\nIn a second part\, I will discuss early results about the 
 causal origin of *galactic* properties obtained from simulations that also
  include baryonic physics (cooling\, star formation\, supernova and AGN fe
 edback).
LOCATION:via zoom 
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