Searching for Cosmic Strings in CMB Anisotropy Maps using Wavelets and Curvelets
We use wavelet and curvelet transforms to extract signals of cosmic strings from cosmic microwave background (CMB) temperature anisotropy maps, and to study the limits on the cosmic string tension which various ongoing CMB temperature anisotropy experiments will be able to achieve. We construct sky...
Main Authors: | , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
arXiv
2016
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48550/arxiv.1608.00004 https://arxiv.org/abs/1608.00004 |
id |
ftdatacite:10.48550/arxiv.1608.00004 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48550/arxiv.1608.00004 2023-05-15T18:22:51+02:00 Searching for Cosmic Strings in CMB Anisotropy Maps using Wavelets and Curvelets Hergt, Lukas Amara, Adam Brandenberger, Robert Kacprzak, Tomasz Refregier, Alexandre 2016 https://dx.doi.org/10.48550/arxiv.1608.00004 https://arxiv.org/abs/1608.00004 unknown arXiv https://dx.doi.org/10.1088/1475-7516/2017/06/004 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Cosmology and Nongalactic Astrophysics astro-ph.CO General Relativity and Quantum Cosmology gr-qc High Energy Physics - Phenomenology hep-ph High Energy Physics - Theory hep-th FOS Physical sciences article-journal Article ScholarlyArticle Text 2016 ftdatacite https://doi.org/10.48550/arxiv.1608.00004 https://doi.org/10.1088/1475-7516/2017/06/004 2022-04-01T11:18:20Z We use wavelet and curvelet transforms to extract signals of cosmic strings from cosmic microwave background (CMB) temperature anisotropy maps, and to study the limits on the cosmic string tension which various ongoing CMB temperature anisotropy experiments will be able to achieve. We construct sky maps with size and angular resolution corresponding to various experiments. These maps contain the signals of a scaling solution of long string segments with a given string tension $G μ$, the contribution of the dominant Gaussian primordial cosmological fluctuations, and pixel by pixel white noise with an amplitude corresponding to the instrumental noise of the various experiments. In the case that we include white noise, we find that the curvelets are more powerful than wavelets. For maps with Planck specification, we obtain bounds on the string tension comparable to what was obtained by the Planck collaboration. Experiments with better angular resolution such as the South Pole Telescope third generation (SPT-3G) survey will be able to yield stronger limits. For maps with a specification of SPT-3G we find that string signals will be visible down to a string tension of $G μ= 1.4 \times 10^{-7}$. : 13 pages, 7 figures, 3 tables Text South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Cosmology and Nongalactic Astrophysics astro-ph.CO General Relativity and Quantum Cosmology gr-qc High Energy Physics - Phenomenology hep-ph High Energy Physics - Theory hep-th FOS Physical sciences |
spellingShingle |
Cosmology and Nongalactic Astrophysics astro-ph.CO General Relativity and Quantum Cosmology gr-qc High Energy Physics - Phenomenology hep-ph High Energy Physics - Theory hep-th FOS Physical sciences Hergt, Lukas Amara, Adam Brandenberger, Robert Kacprzak, Tomasz Refregier, Alexandre Searching for Cosmic Strings in CMB Anisotropy Maps using Wavelets and Curvelets |
topic_facet |
Cosmology and Nongalactic Astrophysics astro-ph.CO General Relativity and Quantum Cosmology gr-qc High Energy Physics - Phenomenology hep-ph High Energy Physics - Theory hep-th FOS Physical sciences |
description |
We use wavelet and curvelet transforms to extract signals of cosmic strings from cosmic microwave background (CMB) temperature anisotropy maps, and to study the limits on the cosmic string tension which various ongoing CMB temperature anisotropy experiments will be able to achieve. We construct sky maps with size and angular resolution corresponding to various experiments. These maps contain the signals of a scaling solution of long string segments with a given string tension $G μ$, the contribution of the dominant Gaussian primordial cosmological fluctuations, and pixel by pixel white noise with an amplitude corresponding to the instrumental noise of the various experiments. In the case that we include white noise, we find that the curvelets are more powerful than wavelets. For maps with Planck specification, we obtain bounds on the string tension comparable to what was obtained by the Planck collaboration. Experiments with better angular resolution such as the South Pole Telescope third generation (SPT-3G) survey will be able to yield stronger limits. For maps with a specification of SPT-3G we find that string signals will be visible down to a string tension of $G μ= 1.4 \times 10^{-7}$. : 13 pages, 7 figures, 3 tables |
format |
Text |
author |
Hergt, Lukas Amara, Adam Brandenberger, Robert Kacprzak, Tomasz Refregier, Alexandre |
author_facet |
Hergt, Lukas Amara, Adam Brandenberger, Robert Kacprzak, Tomasz Refregier, Alexandre |
author_sort |
Hergt, Lukas |
title |
Searching for Cosmic Strings in CMB Anisotropy Maps using Wavelets and Curvelets |
title_short |
Searching for Cosmic Strings in CMB Anisotropy Maps using Wavelets and Curvelets |
title_full |
Searching for Cosmic Strings in CMB Anisotropy Maps using Wavelets and Curvelets |
title_fullStr |
Searching for Cosmic Strings in CMB Anisotropy Maps using Wavelets and Curvelets |
title_full_unstemmed |
Searching for Cosmic Strings in CMB Anisotropy Maps using Wavelets and Curvelets |
title_sort |
searching for cosmic strings in cmb anisotropy maps using wavelets and curvelets |
publisher |
arXiv |
publishDate |
2016 |
url |
https://dx.doi.org/10.48550/arxiv.1608.00004 https://arxiv.org/abs/1608.00004 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://dx.doi.org/10.1088/1475-7516/2017/06/004 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1608.00004 https://doi.org/10.1088/1475-7516/2017/06/004 |
_version_ |
1766202261624586240 |