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SUMMARY:Splashback as a physical boundary of galaxy halos: theoretical pre
 dictions\, observational detections\, and implications for galaxy evolutio
 n - Andrey Kravtsov (U.Chicago and IoA)
DTSTART:20181116T113000Z
DTEND:20181116T123000Z
UID:TALK113833@talks.cam.ac.uk
CONTACT:Martin Haehnelt
DESCRIPTION:Theoretical models of simple spherical collapse predict that d
 ynamics of matter during collapse of dark matter halos  gives rise to shar
 p features - “edges” - in radial density profiles of matter. I will sh
 ow that such sharp edges are detectable around real LCDM halos despite the
  added complexities of their collapse and will argue that these edges are 
 a natural physical boundary of halos. I will discuss their recent observat
 ional detections  around real galaxy clusters and will show some examples 
 of how splashback feature in matter and galaxy distribution can help with 
 interpretation of galaxy evolution and dynamics. 
LOCATION:Kavli Large Meeting Room\, Kavli Building
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