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The Atacama Cosmology Telescope: Calibration with WMAP Using Cross-Correlations

Abstract:

We present a new calibration method based on cross-correlations with WMAP and apply it to data from the Atacama Cosmology Telescope (ACT). ACT's observing strategy and map making procedure allows an unbiased reconstruction of the modes in the maps over a wide range of multipoles. By directly matching the ACT maps to WMAP observations in the multipole range of 400 < ell < 1000, we determine the absolute calibration with an uncertainty of 2% in temperature. The precise measurement of the ...

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Publisher copy:
10.1088/0004-637X/740/2/86

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Journal:
The Astrophysical Journal
Volume:
740
Issue:
2
Pages:
86
Publication date:
2010-09-03
DOI:
EISSN:
1538-4357
ISSN:
0004-637X
URN:
uuid:0acb64f7-2829-46e8-b7e2-644faf0adc3e
Source identifiers:
207686
Local pid:
pubs:207686

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