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The cross correlation of the ABS and ACT maps

Li, Zack, Naess, Sigurd, Aiola, Simone, Alonso, David, Appel, John W., Bond, J. Richard, Calabrese, Erminia ORCID:, Choi, Steve K., Crowley, Kevin T., Essinger-Hileman, Thomas, Duff, Shannon M., Dunkley, Joanna, Fowler, J.W., Gallardo, Patricio, Ho, Shuay-Pwu Patty, Hubmayr, Johannes, Kusaka, Akito, Louis, Thibaut, Madhavacheril, Mathew S., McMahon, Jeffrey, Nati, Federico, Niemack, Michael D., Page, Lyman, Parker, Lucas, Partridge, Bruce, Salatino, Maria, Sievers, Jonathan L., Sifón, Cristóbal, Simon, Sara M., Staggs, Suzanne T., Storer, Emilie and Wollack, Edward J. 2020. The cross correlation of the ABS and ACT maps. Journal of Cosmology and Astroparticle Physics 2020 (09) , 010. 10.1088/1475-7516/2020/09/010

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: IOP Publishing
ISSN: 1475-7516
Date of First Compliant Deposit: 5 January 2021
Date of Acceptance: 13 June 2020
Last Modified: 07 Nov 2023 07:21

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