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19 April 2024

» arxiv » 1203.4219

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Detection of Galaxy Cluster Motions with the Kinematic Sunyaev-Zel'dovich Effect
Nick Hand ; Graeme E. Addison ; Eric Aubourg ; Nick Battaglia ; Elia S. Battistelli ; Dmitry Bizyaev ; J. Richard Bond ; Howard Brewington ; Jon Brinkmann ; Benjamin R. Brown ; Sudeep Das ; Kyle S. Dawson ; Mark J. Devlin ; Joanna Dunkley ; Rolando Dunner ; Daniel J. Eisenstein ; Joseph W. Fowler ; Megan B. Gralla ; Amir Hajian ; Mark Halpern ; Matt Hilton ; Adam D. Hincks ; Renee Hlozek ; John P. Hughes ; Leopoldo Infante ; Kent D. Irwin ; Arthur Kosowsky ; Yen-Ting Lin ; Elena Malanushenko ; Viktor Malanushenko ; Tobias A. Marriage ; Danica Marsden ; Felipe Menanteau ; Kavilan Moodley ; Michael D. Niemack ; Michael R. Nolta ; Daniel Oravetz ; Lyman A. Page ; Nathalie Palanque-Delabrouille ; Kaike Pan ; Erik D. Reese ; David J. Schlegel ; Donald P. Schneider ; Neelima Sehgal ; Alaina Shelden ; Jon Sievers ; Cristobal Sifon ; Audrey Simmons ; Stephanie Snedden ; David N. Spergel ; Suzanne T. Staggs ; Daniel S. Swetz ; Eric R. Switzer ; Hy Trac ; Benjamin A. Weaver ; Edward J. Wollack ; Christophe Yeche ; Caroline Zunckel ;
Date:	19 Mar 2012
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.
Source:	arXiv, 1203.4219
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