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SUMMARY:Is the integrated Sachs-Wolfe effect from super-structures still a
  problem for  LambdaCDM? - Shaun Hotchkiss (University of Helsinki)
DTSTART:20120227T130000Z
DTEND:20120227T140000Z
UID:TALK35962@talks.cam.ac.uk
CONTACT:Dr Sebastien Renaux-Petel
DESCRIPTION:In any region of the universe where the gravitational potentia
 l decays over time large-scale structure will produce a redshift in the co
 smic microwave background. This is known as the integrated Sachs-Wolfe (IS
 W) effect. A cosmological constant causes such a decay and as such the ISW
  effect is an important consistency test of the standard cosmological mode
 l. The ISW imprint of very large (super) structures has reportedly been de
 tected with >4\\sigma significance. I will discuss this observation and th
 e LambdaCDM prediction for it. It is seen that the observed signal is >3-s
 igma larger than expectations. No solution to this 'ISW mystery' is yet kn
 own\; however I will discuss some interesting directions worth further exp
 loration.
LOCATION:CMS\, Pav.B\, CTC Common Room (B1.19)
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