Leung, J. S.-Y. and Hartley, J. and Nagy, J. M. and Netterfield, C. B. and Shariff, J. A. and Ade, P. A. R. and Amiri, M. and Benton, S. J. and Bergman, A. S. and Bihary, R. and Bock, J. J. and Bond, J. R. and Bonetti, J. A. and Bryan, S. A. and Chiang, H. C. and Contaldi, C. R. and Dorè, O. and Duivenvoorden, A. J. and Eriksen, H. K. and Farhang, M. and Filippini, J. P. and Fraisse, A. A. and Freese, K. and Galloway, M. and Gambrel, A. E. and Gandilo, N. N. and Ganga, K. and Gualtieri, R. and Gudmundsson, J. E. and Halpern, M. and Hasselfield, M. and Hilton, G. and Holmes, W. and Hristov, V. V. and Huang, Z. and Irwin, K. D. and Jones, W. C. and Karakci, A. and Kuo, C. L. and Kermish, Z. D. and Li, S. and Mak, D. S. Y. and Mason, P. V. and Megerian, K. and Moncelsi, L. and Morford, T. A. and Nolta, M. and O’Brient, R. and Osherson, B. and Padilla, I. L. and Racine, B. and Rahlin, A. S. and Reintsema, C. and Ruhl, J. E. and Runyan, M. C. and Ruud, T. M. and Shaw, E. C. and Shiu, C. and Soler, J. D. and Song, X. and Trangsrud, A. and Tucker, C. and Tucker, R. S. and Turner, A. D. and van der List, J. F. and Weber, A. C. and Wehus, I. K. and Wen, S. and Wiebe, D. V. and Young, E. Y. (2022) A Simulation-based Method for Correcting Mode Coupling in CMB Angular Power Spectra. Astrophysical Journal, 928 (2). Art. No. 109. ISSN 0004-637X. doi:10.3847/1538-4357/ac562f. https://resolver.caltech.edu/CaltechAUTHORS:20220427-719784600
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Abstract
Modern cosmic microwave background (CMB) analysis pipelines regularly employ complex time-domain filters, beam models, masking, and other techniques during the production of sky maps and their corresponding angular power spectra. However, these processes can generate couplings between multipoles from the same spectrum and from different spectra, in addition to the typical power attenuation. Within the context of pseudo-C_ℓ based, MASTER-style analyses, the net effect of the time-domain filtering is commonly approximated by a multiplicative transfer function, F_ℓ, that can fail to capture mode mixing and is dependent on the spectrum of the signal. To address these shortcomings, we have developed a simulation-based spectral correction approach that constructs a two-dimensional transfer matrix, J_u, which contains information about mode mixing in addition to mode attenuation. We demonstrate the application of this approach on data from the first flight of the SPIDER balloon-borne CMB experiment.
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| Additional Information: | © 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2021 November 2; revised 2022 February 1; accepted 2022 February 11; published 2022 March 30. Spider is supported in the U.S. by the National Aeronautics and Space Administration under grant Nos. NNX07AL64G, NNX12AE95G, NNX17AC55G, and 80NSSC21K1986 issued through the Science Mission Directorate and by the National Science Foundation through PLR-1043515. Logistical support for the Antarctic deployment and operations is provided by the NSF through the U.S. Antarctic Program. Support in Canada is provided by the Natural Sciences and Engineering Research Council and the Canadian Space Agency. Support in Norway is provided by the Research Council of Norway. Support in Sweden is provided by the Swedish Research Council through the Oskar Klein Centre (Contract No. 638-2013-8993) as well as a grant from the Swedish Research Council (dnr. 2019-93959) and a grant from the Swedish Space Agency (dnr. 139/17). The Dunlap Institute is funded through an endowment established by the David Dunlap family and the University of Toronto. The multiplexing readout electronics were developed with support from the Canada Foundation for Innovation and the British Columbia Knowledge Development Fund. K.F. holds the Jeff & Gail Kodosky Endowed Chair at UT Austin and is grateful for that support. W.C.J. acknowledges the generous support of the David and Lucile Packard Foundation, which has been crucial to the success of the project. C.R.C. was supported by UKRI Consolidated grant Nos. ST/P000762/1, ST/N000838/1, and ST/T000791/1. Some of the results in this paper have been derived using the HEALPix package (Gorski et al. 2005). The computations described in this paper were performed on four computing clusters: Hippo at the University of KwaZulu-Natal, Feynman at Princeton University, and the GPC and Niagara supercomputers at the SciNet HPC Consortium (Loken et al. 2010; Ponce et al. 2019). SciNet is funded by the Canada Foundation for Innovation under the auspices of Compute Canada, the Government of Ontario, Ontario Research Fund—Research Excellence, and the University of Toronto. The collaboration is grateful to the British Antarctic Survey, particularly Sam Burrell, and to the Alfred Wegener Institute and the crew of R.V. Polarstern for invaluable assistance with the recovery of the data and payload after the 2015 flight. Brendan Crill and Tom Montroy made significant contributions to Spider's development. Paul Steinhardt provided very helpful comments regarding the status of early universe models. This project, like so many others that he founded and supported, owes much to the vision and leadership of the late Professor Andrew E. Lange. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Group: | Astronomy Department | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Subject Keywords: | Cosmic microwave background radiation; Observational cosmology; Astronomy data analysis | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Issue or Number: | 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Classification Code: | Unified Astronomy Thesaurus concepts: Cosmic microwave background radiation (322); Observational cosmology (1146); Astronomy data analysis (1858) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.3847/1538-4357/ac562f | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20220427-719784600 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20220427-719784600 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Official Citation: | J. S.-Y. Leung et al 2022 ApJ 928 109 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| ID Code: | 114500 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited On: | 27 Apr 2022 23:29 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Last Modified: | 27 Apr 2022 23:29 |
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