Journal
ASTROPHYSICAL JOURNAL
Volume 729, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0004-637X/729/1/62
Keywords
cosmic background radiation; cosmology: observations
Categories
Funding
- US National Science Foundation [AST-0408698, PHY-0355328, AST-0707731, PIRE-0507768]
- Princeton University
- University of Pennsylvania
- Canada Foundation for Innovation under Compute Canada
- Government of Ontario
- Ontario Research Fund-Research Excellence
- University of Toronto
- Berkeley Center for Cosmological Physics Fellowship
- NASA [NNX08AH30G]
- RCUK Fellowship
- Rhodes Trust
- Natural Science and Engineering Research Council of Canada (NSERC)
- NSF [AST-0546035, AST-0606975, PHY-0114422]
- FONDAP Centro de Astrofisica
- CONICYT
- MECESUP
- Fundacion Andes
- South African National Research Foundation (NRF)
- Meraka Institute
- South African Square Kilometer Array (SKA) Project
- World Premier International Research Center Initiative, MEXT, Japan
- US Department of Energy [DE-AC3-76SF00515]
- NASA Office of Space Science
- STFC [ST/G002711/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [0965625] Funding Source: National Science Foundation
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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.
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