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Probing anisotropies of the Stochastic Gravitational Wave Background with LISA

Nicola Bartolo, Daniele Bertacca, Robert Caldwell, Carlo R. Contaldi, Giulia Cusin, Valerio De Luca, Emanuela Dimastrogiovanni, Matteo Fasiello, Daniel G. Figueroa, Gabriele Franciolini, Alexander C. Jenkins, Marco Peloso, Mauro Pieroni, Arianna Renzini, Angelo Ricciardone, Antonio Riotto, Mairi Sakellariadou, Lorenzo Sorbo, Gianmassimo Tasinato Orcid Logo, Jesús Torrado, Sebastien Clesse, Sachiko Kuroyanagi

Journal of Cosmology and Astroparticle Physics, Volume: 2022, Issue: 11, Start page: 009

Swansea University Author: Gianmassimo Tasinato Orcid Logo

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DOI (Published version): 10.1088/1475-7516/2022/11/009

Abstract

We investigate the sensitivity of the Laser Interferometer Space Antenna (LISA) to the anisotropies of the Stochastic Gravitational Wave Background (SGWB). We first discuss the main astrophysical and cosmological sources of SGWB which are characterized by anisotropies in the GW energy density, and w...

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Published in: Journal of Cosmology and Astroparticle Physics
ISSN: 1475-7516
Published: IOP Publishing 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa62014
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We then perform a Fisher matrix analysis of the prospects of detectability of anisotropic features with LISA for individual multipoles, focusing on a SGWB with a power-law frequency profile. We compute the noise angular spectrum taking into account the specific scan strategy of the LISA detector. We analyze the case of the kinematic dipole and quadrupole generated by Doppler boosting an isotropic SGWB. We find that &#x3B2; &#x3A9;GW &#x223C; 2 &#xD7; 10-11 is required to observe a dipolar signal with LISA. The detector response to the quadrupole has a factor &#x223C; 103 &#x3B2; relative to that of the dipole. 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spelling 2022-12-15T11:16:00.3717967 v2 62014 2022-11-23 Probing anisotropies of the Stochastic Gravitational Wave Background with LISA cb754b073d1e4949c5e3db97744d3301 0000-0002-9835-4864 Gianmassimo Tasinato Gianmassimo Tasinato true false 2022-11-23 SPH We investigate the sensitivity of the Laser Interferometer Space Antenna (LISA) to the anisotropies of the Stochastic Gravitational Wave Background (SGWB). We first discuss the main astrophysical and cosmological sources of SGWB which are characterized by anisotropies in the GW energy density, and we build a Signal-to-Noise estimator to quantify the sensitivity of LISA to different multipoles. We then perform a Fisher matrix analysis of the prospects of detectability of anisotropic features with LISA for individual multipoles, focusing on a SGWB with a power-law frequency profile. We compute the noise angular spectrum taking into account the specific scan strategy of the LISA detector. We analyze the case of the kinematic dipole and quadrupole generated by Doppler boosting an isotropic SGWB. We find that β ΩGW ∼ 2 × 10-11 is required to observe a dipolar signal with LISA. The detector response to the quadrupole has a factor ∼ 103 β relative to that of the dipole. The characterization of the anisotropies, both from a theoretical perspective and from a map-making point of view, allows us to extract information that can be used to understand the origin of the SGWB, and to discriminate among distinct superimposed SGWB sources. Journal Article Journal of Cosmology and Astroparticle Physics 2022 11 009 IOP Publishing 1475-7516 8 11 2022 2022-11-08 10.1088/1475-7516/2022/11/009 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University Not Required 2022-12-15T11:16:00.3717967 2022-11-23T17:18:25.0371751 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Nicola Bartolo 1 Daniele Bertacca 2 Robert Caldwell 3 Carlo R. Contaldi 4 Giulia Cusin 5 Valerio De Luca 6 Emanuela Dimastrogiovanni 7 Matteo Fasiello 8 Daniel G. Figueroa 9 Gabriele Franciolini 10 Alexander C. Jenkins 11 Marco Peloso 12 Mauro Pieroni 13 Arianna Renzini 14 Angelo Ricciardone 15 Antonio Riotto 16 Mairi Sakellariadou 17 Lorenzo Sorbo 18 Gianmassimo Tasinato 0000-0002-9835-4864 19 Jesús Torrado 20 Sebastien Clesse 21 Sachiko Kuroyanagi 22 Under embargo Under embargo 2022-11-28T12:27:47.2901527 Output 2898615 application/pdf Accepted Manuscript true 2023-11-08T00:00:00.0000000 true eng
title Probing anisotropies of the Stochastic Gravitational Wave Background with LISA
spellingShingle Probing anisotropies of the Stochastic Gravitational Wave Background with LISA
Gianmassimo Tasinato
title_short Probing anisotropies of the Stochastic Gravitational Wave Background with LISA
title_full Probing anisotropies of the Stochastic Gravitational Wave Background with LISA
title_fullStr Probing anisotropies of the Stochastic Gravitational Wave Background with LISA
title_full_unstemmed Probing anisotropies of the Stochastic Gravitational Wave Background with LISA
title_sort Probing anisotropies of the Stochastic Gravitational Wave Background with LISA
author_id_str_mv cb754b073d1e4949c5e3db97744d3301
author_id_fullname_str_mv cb754b073d1e4949c5e3db97744d3301_***_Gianmassimo Tasinato
author Gianmassimo Tasinato
author2 Nicola Bartolo
Daniele Bertacca
Robert Caldwell
Carlo R. Contaldi
Giulia Cusin
Valerio De Luca
Emanuela Dimastrogiovanni
Matteo Fasiello
Daniel G. Figueroa
Gabriele Franciolini
Alexander C. Jenkins
Marco Peloso
Mauro Pieroni
Arianna Renzini
Angelo Ricciardone
Antonio Riotto
Mairi Sakellariadou
Lorenzo Sorbo
Gianmassimo Tasinato
Jesús Torrado
Sebastien Clesse
Sachiko Kuroyanagi
format Journal article
container_title Journal of Cosmology and Astroparticle Physics
container_volume 2022
container_issue 11
container_start_page 009
publishDate 2022
institution Swansea University
issn 1475-7516
doi_str_mv 10.1088/1475-7516/2022/11/009
publisher IOP Publishing
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 0
active_str 0
description We investigate the sensitivity of the Laser Interferometer Space Antenna (LISA) to the anisotropies of the Stochastic Gravitational Wave Background (SGWB). We first discuss the main astrophysical and cosmological sources of SGWB which are characterized by anisotropies in the GW energy density, and we build a Signal-to-Noise estimator to quantify the sensitivity of LISA to different multipoles. We then perform a Fisher matrix analysis of the prospects of detectability of anisotropic features with LISA for individual multipoles, focusing on a SGWB with a power-law frequency profile. We compute the noise angular spectrum taking into account the specific scan strategy of the LISA detector. We analyze the case of the kinematic dipole and quadrupole generated by Doppler boosting an isotropic SGWB. We find that β ΩGW ∼ 2 × 10-11 is required to observe a dipolar signal with LISA. The detector response to the quadrupole has a factor ∼ 103 β relative to that of the dipole. The characterization of the anisotropies, both from a theoretical perspective and from a map-making point of view, allows us to extract information that can be used to understand the origin of the SGWB, and to discriminate among distinct superimposed SGWB sources.
published_date 2022-11-08T04:21:18Z
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score 11.013148

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