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Author(s): Hajian, Amir; Acquaviva, Viviana; Ade, Peter AR; Aguirre, Paula; Amiri, Mandana; et al

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Abstract: We present a new calibration method based on cross-correlations with the Wilkinson Microwave Anisotropy Probe (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 < l < 1000, we determine the absolute calibration with an uncertainty of 2% in temperature. The precise measurement of the calibration error directly impacts the uncertainties in the cosmological parameters estimated from the ACT power spectra. We also present a combined map based on ACT and WMAP data that has a high signal-to-noise ratio over a wide range of multipoles.
Publication Date: 20-Oct-2011
Electronic Publication Date: 3-Oct-2011
Citation: Hajian, Amir, Acquaviva, Viviana, Ade, Peter AR, Aguirre, Paula, Amiri, Mandana, Appel, John William, Felipe Barrientos, L, Battistelli, Elia S, Bond, John R, Brown, Ben, Burger, Bryce, Chervenak, Jay, Das, Sudeep, Devlin, Mark J, Dicker, Simon R, Doriese, W Bertrand, Dunkley, Joanna, Duenner, Rolando, Essinger-Hileman, Thomas, Fisher, Ryan P, Fowler, Joseph W, Halpern, Mark, Hasselfield, Matthew, Hernandez-Monteagudo, Carlos, Hilton, Gene C, Hilton, Matt, Hincks, Adam D, Hlozek, Renee, Huffenberger, Kevin M, Hughes, David H, Hughes, John P, Infante, Leopoldo, Irwin, Kent D, Baptiste Juin, Jean, Kaul, Madhuri, Klein, Jeff, Kosowsky, Arthur, Lau, Judy M, Limon, Michele, Lin, Yen-Ting, Lupton, Robert H, Marriage, Tobias A, Marsden, Danica, Mauskopf, Phil, Menanteau, Felipe, Moodley, Kavilan, Moseley, Harvey, Netterfield, Calvin B, Niemack, Michael D, Nolta, Michael R, Page, Lyman A, Parker, Lucas, Partridge, Bruce, Reid, Beth, Sehgal, Neelima, Sherwin, Blake D, Sievers, Jon, Spergel, David N, Staggs, Suzanne T, Swetz, Daniel S, Switzer, Eric R, Thornton, Robert, Trac, Hy, Tucker, Carole, Warne, Ryan, Wollack, Ed, Zhao, Yue. (2011). THE ATACAMA COSMOLOGY TELESCOPE: CALIBRATION WITH THE WILKINSON MICROWAVE ANISOTROPY PROBE USING CROSS-CORRELATIONS. ASTROPHYSICAL JOURNAL, 740 (10.1088/0004-637X/740/2/86
DOI: doi:10.1088/0004-637X/740/2/86
ISSN: 0004-637X
Type of Material: Journal Article
Journal/Proceeding Title: ASTROPHYSICAL JOURNAL
Version: Final published version. This is an open access article.

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