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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 Amiri
  • , John W. Appel
  • , L. Felipe Barrientos
  • , Elia S. Battistelli
  • , John R. 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 Hernndez-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
  • University of California at Berkeley
  • Princeton University
  • Johns Hopkins University
  • Cardiff University
  • Pontificia Universidad Católica de Chile
  • University of British Columbia
  • University of Rome La Sapienza
  • University of Toronto
  • University of Pittsburgh
  • NASA Goddard Space Flight Center
  • University of Pennsylvania
  • National Institute of Standards and Technology
  • University of Oxford
  • Max Planck Institute for Astrophysics
  • University of KwaZulu-Natal
  • Council for Scientific and Industrial Research
  • University of Miami
  • Instituto Nacional de Astrofisica Optica y Electronica
  • Rutgers - The State University of New Jersey, New Brunswick
  • Kavli Institute for Particle Astrophysics and Cosmology
  • Stanford University
  • Columbia University
  • The University of Tokyo
  • The University of Chicago
  • Haverford College
  • University of Barcelona
  • West Chester University
  • Carnegie Mellon University
  • Harvard University

Research output: Contribution to journalArticlepeer-review

154 Scopus citations

Abstract

We present measurements of the cosmic microwave background (CMB) power spectrum made by the Atacama Cosmology Telescope at 148GHz and 218GHz, 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 ΛCDM 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 2.8σ level. We also detect a low level of Galactic dust in our maps, which demonstrates that we can recover known faint, diffuse signals.

Original languageEnglish
Article number62
JournalAstrophysical Journal
Volume729
Issue number1
DOIs
StatePublished - Mar 1 2011

Keywords

  • color figures
  • cosmic background radiation cosmology
  • observations Online-only material

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