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Title: The Atacama Cosmology Telescope: cross correlation with Planck maps

We present the temperature power spectrum of the Cosmic Microwave Background obtained by cross-correlating maps from the Atacama Cosmology Telescope (ACT) at 148 and 218 GHz with maps from the Planck satellite at 143 and 217 GHz, in two overlapping regions covering 592 square degrees. We find excellent agreement between the two datasets at both frequencies, quantified using the variance of the residuals between the ACT power spectra and the ACT × Planck cross-spectra. We use these cross-correlations to measure the calibration of the ACT data at 148 and 218 GHz relative to Planck, to 0.7% and 2% precision respectively. We find no evidence for anisotropy in the calibration parameter. We compare the Planck 353 GHz power spectrum with the measured amplitudes of dust and cosmic infrared background (CIB) of ACT data at 148 and 218 GHz. We also compare planet and point source measurements from the two experiments.
Authors:
; ; ;  [1] ; ;  [2] ; ;  [3] ; ;  [4] ;  [5] ;  [6] ; ;  [7] ; ;  [8] ;  [9] ;  [10] ;  [11] ;  [12] more »; « less
  1. Department of Astrophysics, Oxford University, Oxford OX1 3RH (United Kingdom)
  2. Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z4 (Canada)
  3. Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States)
  4. Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, ON M5S 3H8 (Canada)
  5. Argonne National Laboratory, 9700 S. Cass Ave., Lemont, IL 60439 (United States)
  6. Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, U.S.A (United States)
  7. Departamento de Astronomía y Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22 (Chile)
  8. Dept. of Physics and Astronomy, The Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218-2686 (United States)
  9. Department of Physics, Florida State University, Keen Physics Building, 77 Chieftan Way, Tallahassee, Florida (United States)
  10. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA, 15260 (United States)
  11. Astrophysics and Cosmology Research Unit, School of Mathematical Sciences, University of KwaZulu-Natal, Durban, 4041 (South Africa)
  12. Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, NJ 08544 (United States)
Publication Date:
OSTI Identifier:
22373474
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; AMPLITUDES; ANISOTROPY; CALIBRATION; CORRELATIONS; COSMOLOGY; DATASETS; DUSTS; GHZ RANGE 100-1000; MAPS; PLANETS; POINT SOURCES; RELICT RADIATION; SPECTRA; TELESCOPES