The cross correlation of the ABS and ACT maps

Zack Li, Sigurd Naess, Simone Aiola, David Alonso, John W. Appel, J. Richard Bond, Erminia Calabrese, Steve K. Choi, Kevin T. Crowley, Thomas Essinger-Hileman, Shannon M. Duff, Joanna Dunkley, J. W. Fowler, Patricio Gallardo, Shuay Pwu Patty Ho, Johannes Hubmayr, Akito Kusaka, Thibaut Louis, Mathew S. Madhavacheril, Jeffrey McMahonFederico Nati, Michael D. Niemack, Lyman Page, Lucas Parker, Bruce Partridge, Maria Salatino, Jonathan L. Sievers, Cristóbal Sifón, Sara M. Simon, Suzanne T. Staggs, Emilie Storer, Edward J. Wollack

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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.

Original languageEnglish (US)
Article number010
JournalJournal of Cosmology and Astroparticle Physics
Issue number9
StatePublished - Sep 2020

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics


  • CMBR detectors
  • CMBR experiments
  • CMBR polarization


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