Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map
We report constraints on cosmological parameters from the angular power spectrum of a cosmic microwave background (CMB) gravitational lensing potential map created using temperature data from 2500 deg2 of South Pole Telescope (SPT) data supplemented with data from Planck in the same sky region, with...
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American Astronomical Society
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ftcaltechauth:oai:authors.library.caltech.edu:87268 2023-05-15T18:23:09+02:00 Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map Simard, G. Crites, A. T. 2018-06-20 application/pdf https://authors.library.caltech.edu/87268/ https://authors.library.caltech.edu/87268/1/Simard_2018_ApJ_860_137.pdf https://authors.library.caltech.edu/87268/2/1712.07541.pdf https://resolver.caltech.edu/CaltechAUTHORS:20180620-133335250 en eng American Astronomical Society https://authors.library.caltech.edu/87268/1/Simard_2018_ApJ_860_137.pdf https://authors.library.caltech.edu/87268/2/1712.07541.pdf Simard, G. and Crites, A. T. (2018) Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map. Astrophysical Journal, 860 (2). Art. No. 137. ISSN 1538-4357. doi:10.3847/1538-4357/aac264. https://resolver.caltech.edu/CaltechAUTHORS:20180620-133335250 <https://resolver.caltech.edu/CaltechAUTHORS:20180620-133335250> other Article PeerReviewed 2018 ftcaltechauth https://doi.org/10.3847/1538-4357/aac264 2021-11-18T18:46:20Z We report constraints on cosmological parameters from the angular power spectrum of a cosmic microwave background (CMB) gravitational lensing potential map created using temperature data from 2500 deg2 of South Pole Telescope (SPT) data supplemented with data from Planck in the same sky region, with the statistical power in the combined map primarily from the SPT data. We fit the lensing power spectrum to a model including cold dark matter and a cosmological constant (ΛCDM), and to models with single-parameter extensions to ΛCDM. We find constraints that are comparable to and consistent with those found using the full-sky Planck CMB lensing data, e.g., σ_8 Ω^(0.25)_m = 0.598 ± 0.024 from the lensing data alone with weak priors placed on other parameters. Combining with primary CMB data, we explore single-parameter extensions to ΛCDM. We find Ω_k = -0.012^(+0.021)_(-0.023) or M_ν < 0.70 eV at 95% confidence, in good agreement with results including the lensing potential as measured by Planck. We include two parameters that scale the effect of lensing on the CMB: A_L, which scales the lensing power spectrum in both the lens reconstruction power and in the smearing of the acoustic peaks, and A^(øø), which scales only the amplitude of the lensing reconstruction power spectrum. We find A^(øø) x A_L = 1.01 ± 0.08 for the lensing map made from combined SPT and Planck data, indicating that the amount of lensing is in excellent agreement with expectations from the observed CMB angular power spectrum when not including the information from smearing of the acoustic peaks. Article in Journal/Newspaper South pole Caltech Authors (California Institute of Technology) South Pole The Astrophysical Journal 860 2 137 |
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English |
description |
We report constraints on cosmological parameters from the angular power spectrum of a cosmic microwave background (CMB) gravitational lensing potential map created using temperature data from 2500 deg2 of South Pole Telescope (SPT) data supplemented with data from Planck in the same sky region, with the statistical power in the combined map primarily from the SPT data. We fit the lensing power spectrum to a model including cold dark matter and a cosmological constant (ΛCDM), and to models with single-parameter extensions to ΛCDM. We find constraints that are comparable to and consistent with those found using the full-sky Planck CMB lensing data, e.g., σ_8 Ω^(0.25)_m = 0.598 ± 0.024 from the lensing data alone with weak priors placed on other parameters. Combining with primary CMB data, we explore single-parameter extensions to ΛCDM. We find Ω_k = -0.012^(+0.021)_(-0.023) or M_ν < 0.70 eV at 95% confidence, in good agreement with results including the lensing potential as measured by Planck. We include two parameters that scale the effect of lensing on the CMB: A_L, which scales the lensing power spectrum in both the lens reconstruction power and in the smearing of the acoustic peaks, and A^(øø), which scales only the amplitude of the lensing reconstruction power spectrum. We find A^(øø) x A_L = 1.01 ± 0.08 for the lensing map made from combined SPT and Planck data, indicating that the amount of lensing is in excellent agreement with expectations from the observed CMB angular power spectrum when not including the information from smearing of the acoustic peaks. |
format |
Article in Journal/Newspaper |
author |
Simard, G. Crites, A. T. |
spellingShingle |
Simard, G. Crites, A. T. Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map |
author_facet |
Simard, G. Crites, A. T. |
author_sort |
Simard, G. |
title |
Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map |
title_short |
Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map |
title_full |
Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map |
title_fullStr |
Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map |
title_full_unstemmed |
Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map |
title_sort |
constraints on cosmological parameters from the angular power spectrum of a combined 2500 deg^2 spt-sz and planck gravitational lensing map |
publisher |
American Astronomical Society |
publishDate |
2018 |
url |
https://authors.library.caltech.edu/87268/ https://authors.library.caltech.edu/87268/1/Simard_2018_ApJ_860_137.pdf https://authors.library.caltech.edu/87268/2/1712.07541.pdf https://resolver.caltech.edu/CaltechAUTHORS:20180620-133335250 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://authors.library.caltech.edu/87268/1/Simard_2018_ApJ_860_137.pdf https://authors.library.caltech.edu/87268/2/1712.07541.pdf Simard, G. and Crites, A. T. (2018) Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg^2 SPT-SZ and Planck Gravitational Lensing Map. Astrophysical Journal, 860 (2). Art. No. 137. ISSN 1538-4357. doi:10.3847/1538-4357/aac264. https://resolver.caltech.edu/CaltechAUTHORS:20180620-133335250 <https://resolver.caltech.edu/CaltechAUTHORS:20180620-133335250> |
op_rights |
other |
op_doi |
https://doi.org/10.3847/1538-4357/aac264 |
container_title |
The Astrophysical Journal |
container_volume |
860 |
container_issue |
2 |
container_start_page |
137 |
_version_ |
1766202641269915648 |