NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The Atacama Cosmology Telescope: Calibration with the Wilkinson Microwave Anisotropy Probe Using Cross-CorrelationsWe 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 mapmaking 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 < I < 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.
Document ID
20120002565
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Hajian, Amir
(Toronto Univ. Ontario, Canada)
Acquaviva, Viviana
(Princeton Univ. Princeton, NJ, United States)
Ade, Peter A. R.
(Cardiff Univ. United Kingdom)
Aguirre, Paula
(Pontificia Univ. Catolica de Chile Santiago, Chile)
Amiri, Mandana
(British Columbia Univ. Vancouver, British Columbia, Canada)
Appel, John William
(Princeton Univ. Princeton, NJ, United States)
Barrientos, L. Felipe
(Pontificia Univ. Catolica de Chile Santiago, Chile)
Battistelli, Elia S.
(British Columbia Univ. Vancouver, British Columbia, Canada)
Bond, John R.
(Toronto Univ. Ontario, Canada)
Brown, Ben
(Pittsburgh Univ. Pittsburgh, PA, United States)
Burger, Bryce
(British Columbia Univ. Vancouver, British Columbia, Canada)
Chervenak, Jay
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Das, Sudeep
(Princeton Univ. Princeton, NJ, United States)
Devlin, Mark J.
(Pennsylvania Univ. Philadelphia, PA, United States)
Dicker, Simon R.
(Pennsylvania Univ. Philadelphia, PA, United States)
Bertrand Doriese, W.
(National Inst. of Standards and Technology Boulder, CO, United States)
Dunkley, Joanna
(Princeton Univ. Princeton, NJ, United States)
Dunner, Rolando
(Princeton Univ. Princeton, NJ, United States)
Essinger-Hileman, Thomas
(Princeton Univ. Princeton, NJ, United States)
Fisher, Ryan P.
(Princeton Univ. Princeton, NJ, United States)
Fowler, Joseph W.
(Princeton Univ. Princeton, NJ, United States)
Halpern, Mark
(British Columbia Univ. Vancouver, British Columbia, Canada)
Hasselfield, Matthew
(British Columbia Univ. Vancouver, British Columbia, Canada)
Moseley, Harvey
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wollack, Ed
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
October 3, 2011
Publication Information
Publication: The Astrophysical Journal
Volume: 740
Issue: 2
Subject Category
Astronomy
Report/Patent Number
GSFC.JA.5602.2011
Funding Number(s)
CONTRACT_GRANT: NSF AST-070773I
CONTRACT_GRANT: PIRE-0507768
CONTRACT_GRANT: PHY-0355328
CONTRACT_GRANT: NNX08AH30G
CONTRACT_GRANT: DE-AC3-76SF00515
CONTRACT_GRANT: NSF AST-0408698
CONTRACT_GRANT: NSF AST-0546035
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available