Accession Number N20120011768
Title Detection of Galaxy Cluster Motions with the Kinematic Sunyaev-Zel'dovich Effect.
Publication Date Mar 2012
Media Count 5p
Personal Author A. Hajian A. D. Hincks B. R. Brown D. Bizyaev D. J. Eisenstein E. Aubourg E. J. Wollack E. S. Battistelli G. E. Addison H. Brewington J. Brinkmann J. Dunkley J. P. Hughes J. R. Bond J. W. Flowler K. S. Dawson M. Halpern M. Hilton M. B. Gralla M. J. Devlin N. Battaglia N. Hand R. Dunner R. Hlozek S. Das
Abstract Using high-resolution microwave sky maps made by the Atacama Cosmology Telescope, we for the first time detect motions of galaxy clusters and groups via microwave background .temperature distortions due to the kinematic Sunyaev.Zel'dovich effect. Galaxy clusters are identified by their constituent luminous galaxies observed by the Baryon Oscillation Spectroscopic Survey, part of the Sloan Digital Sky Survey III. The mean pairwise momentum of clusters is measured. at a statistical. significance of 3.8 sigma, and the signal is consistent with the growth of cosmic structure in the standard model of cosmology
Keywords Cosmology
Galactic clusters
Galaxies
Kinematics
Large-scale structure of the univer
Luminosity
Sky surveys(Astronomy)
Sunyaev-zeldovich effect

 
Source Agency National Aeronautics and Space Administration
NTIS Subject Category 54C - Astrophysics
Corporate Author Goddard Space Flight Center, Greenbelt, MD.
Document Type Journal article
Title Note N/A
NTIS Issue Number 1301
Contract Number N/A

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