CfA Colloquium Schedule Spring 2009
 
 5 February 2009

5 February 2009

Speaker: Alexey Vikhlinin (SAO)

Title:The present and the future of growth of structures studies with galaxy clusters.

Abstract:I will present Chandra observations of ROSAT-selected galaxy clusters which allow us to reconstruct the evolution of the galaxy cluster mass function between z=0 and z=0.7. The statistical and systematic errors in this measurement are sufficiently small, so that we can now confidently observe how the growth of structure at redshift below 1 is suppressed by the effects of dark energy; we can also improve constraints on the dark energy equation of state and the mass of light neutrinos. I will also discuss strategies for improving the accuracy of the cluster mass function measurements so that they provide useful cosmological information in the JDEM era.

Video of the Presentation (Talks can be viewed with RealPlayer. Free download is available from www.real.com )

 
 

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