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26 April 2024

» arxiv » 1009.0847

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The Atacama Cosmology Telescope: A Measurement of the Cosmic Microwave Background Power Spectrum at 148 and 218 GHz from the 2008 Southern Survey
Sudeep Das ; Tobias A. Marriage ; Peter A. R. Ade ; Paula Aguirre ; Mandana Amir ; John W. Appel ; L. Felipe Barrientos ; Elia S. Battistelli ; J. Richard Bond ; Ben Brown ; Bryce Burger ; Jay Chervenak ; Mark J. Devlin ; Simon R. Dicker ; W. Bertrand Doriese ; Joanna Dunkley ; Rolando Dünner ; Thomas Essinger-Hileman ; Ryan P. Fisher ; Joseph W. Fowler ; Amir Hajian ; Mark Halpern ; Matthew Hasselfield ; Carlos Hernández-Monteagudo ; Gene C. Hilton ; Matt Hilton ; Adam D. Hincks ; Renée Hlozek ; Kevin M. Huffenberger ; David H. Hughes ; John P. Hughes ; Leopoldo Infante ; Kent D. Irwin ; Jean Baptiste Juin ; Madhuri Kaul ; Jeff Klein ; Arthur Kosowsky ; Judy M Lau ; Michele Limon ; Yen-Ting Lin ; Robert H. Lupton ; Danica Marsden ; Krista Martocci ; Phil Mauskopf ; Felipe Menanteau ; Kavilan Moodley ; Harvey Moseley ; Calvin B. Netterfield ; Michael D. Niemack ; Michael R. Nolta ; Lyman A. Page ; Lucas Parker ; Bruce Partridge ; Beth Reid ; Neelima Sehgal ; Blake D. Sherwin ; Jon Sievers ; David N. Spergel ; Suzanne T. Staggs ; Daniel S. Swetz ; Eric R. Switzer ; Robert Thornton ; Hy Trac ; Carole Tucker ; Ryan Warne ; Ed Wollack ; Yue Zhao ;
Date:	4 Sep 2010
Abstract:	We present measurements of the cosmic microwave background (CMB) power spectrum made by the Atacama Cosmology Telescope at 148 GHz and 218 GHz, as well as the cross-frequency spectrum between the two channels. Our results clearly show the second through the seventh acoustic peaks in the CMB power spectrum. The measurements of these higher-order peaks provide an additional test of the {Lambda}CDM cosmological model. At l > 3000, we detect power in excess of the primary anisotropy spectrum of the CMB. At lower multipoles 500 < l < 3000, we find evidence for gravitational lensing of the CMB in the power spectrum at the 2.8{sigma} level. We also detect a low level of Galactic dust in our maps, which demonstrates that we can recover known faint, diffuse signals.
Source:	arXiv, 1009.0847
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