A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data ...
We search for super-imposed oscillations linearly or logarithmically spaced in Fourier wavenumbers in Planck and South Pole Telescope (SPT-3G) 2018 temperature and polarization data. The SPT-3G temperature and polarization data provide a new window to test these oscillations at high multipoles beyon...
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Online Access: | https://dx.doi.org/10.48550/arxiv.2403.19575 https://arxiv.org/abs/2403.19575 |
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ftdatacite:10.48550/arxiv.2403.19575 2024-04-28T08:38:50+00:00 A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data ... Antony, Akhil Finelli, Fabio Hazra, Dhiraj Kumar Paoletti, Daniela Shafieloo, Arman 2024 https://dx.doi.org/10.48550/arxiv.2403.19575 https://arxiv.org/abs/2403.19575 unknown arXiv Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Cosmology and Nongalactic Astrophysics astro-ph.CO High Energy Physics - Phenomenology hep-ph High Energy Physics - Theory hep-th FOS Physical sciences article Article Preprint CreativeWork 2024 ftdatacite https://doi.org/10.48550/arxiv.2403.19575 2024-04-02T12:56:11Z We search for super-imposed oscillations linearly or logarithmically spaced in Fourier wavenumbers in Planck and South Pole Telescope (SPT-3G) 2018 temperature and polarization data. The SPT-3G temperature and polarization data provide a new window to test these oscillations at high multipoles beyond the Planck angular resolution and sensitivity. We consider both models with a constant and a Gaussian modulated amplitude, which correspond to three and four additional parameters beyond power-law primordial power spectrum for the templates considered, respectively. We find that each of the four models considered can provide an improved fit to Planck data, consistently with previous findings, and to SPT-3G data, always compared to $Λ$CDM. For a constant amplitude of the superimposed oscillations, we find tighter constraints on the amplitude of the oscillations from the combined Planck/SPT-3G data set than in each individual data sets. When the ranges of parameters which provide a better fit to Planck and SPT-3G ... : 10 pages, 9 figures, 2 tables ... Article in Journal/Newspaper South pole DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Cosmology and Nongalactic Astrophysics astro-ph.CO High Energy Physics - Phenomenology hep-ph High Energy Physics - Theory hep-th FOS Physical sciences |
spellingShingle |
Cosmology and Nongalactic Astrophysics astro-ph.CO High Energy Physics - Phenomenology hep-ph High Energy Physics - Theory hep-th FOS Physical sciences Antony, Akhil Finelli, Fabio Hazra, Dhiraj Kumar Paoletti, Daniela Shafieloo, Arman A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data ... |
topic_facet |
Cosmology and Nongalactic Astrophysics astro-ph.CO High Energy Physics - Phenomenology hep-ph High Energy Physics - Theory hep-th FOS Physical sciences |
description |
We search for super-imposed oscillations linearly or logarithmically spaced in Fourier wavenumbers in Planck and South Pole Telescope (SPT-3G) 2018 temperature and polarization data. The SPT-3G temperature and polarization data provide a new window to test these oscillations at high multipoles beyond the Planck angular resolution and sensitivity. We consider both models with a constant and a Gaussian modulated amplitude, which correspond to three and four additional parameters beyond power-law primordial power spectrum for the templates considered, respectively. We find that each of the four models considered can provide an improved fit to Planck data, consistently with previous findings, and to SPT-3G data, always compared to $Λ$CDM. For a constant amplitude of the superimposed oscillations, we find tighter constraints on the amplitude of the oscillations from the combined Planck/SPT-3G data set than in each individual data sets. When the ranges of parameters which provide a better fit to Planck and SPT-3G ... : 10 pages, 9 figures, 2 tables ... |
format |
Article in Journal/Newspaper |
author |
Antony, Akhil Finelli, Fabio Hazra, Dhiraj Kumar Paoletti, Daniela Shafieloo, Arman |
author_facet |
Antony, Akhil Finelli, Fabio Hazra, Dhiraj Kumar Paoletti, Daniela Shafieloo, Arman |
author_sort |
Antony, Akhil |
title |
A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data ... |
title_short |
A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data ... |
title_full |
A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data ... |
title_fullStr |
A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data ... |
title_full_unstemmed |
A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data ... |
title_sort |
search for super-imposed oscillations to the primordial power spectrum in planck and spt-3g 2018 data ... |
publisher |
arXiv |
publishDate |
2024 |
url |
https://dx.doi.org/10.48550/arxiv.2403.19575 https://arxiv.org/abs/2403.19575 |
genre |
South pole |
genre_facet |
South pole |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.48550/arxiv.2403.19575 |
_version_ |
1797570099436060672 |