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The cross correlation of the ABS and ACT maps

Abstract:
One of the most important checks for systematic errors in CMB studies is the cross correlation of maps made by independent experiments. In this paper we report on the cross correlation between maps from the Atacama B-mode Search (ABS) and Atacama Cosmology Telescope (ACT) experiments in both temperature and polarization. These completely different measurements have a clear correlation with each other and with the Planck satellite in both the EE and TE spectra at ℓ<400 over the roughly 0110 deg2 common to all three. The TB, EB, and BB cross spectra are consistent with noise. Exploiting such cross-correlations will be important for future experiments operating in Chile that aim to probe the 30<ℓ<8,000 range.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1475-7516/2020/09/010

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
ORCID:
0000-0002-4598-9719


Publisher:
IOP Publishing
Journal:
Journal of Cosmology and Astroparticle Physics More from this journal
Volume:
2020
Issue:
9
Article number:
10
Publication date:
2020-09-02
Acceptance date:
2020-06-13
DOI:
EISSN:
1475-7516


Language:
English
Keywords:
Pubs id:
1133790
Local pid:
pubs:1133790
Deposit date:
2021-06-06

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