Footprints of population III stars in the gravitational-wave background

We investigate detection prospects of the gravitational-wave background (GWB) that originates from the merging of compact objects formed by the collapse of population III stars. Younger population I/II stars lead to a GWB in the LIGO/Virgo frequency band at the inspiral phase, while population III s...

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Bibliographic Details
Published inarXiv.org
Main Authors Martinovic, Katarina, Perigois, Carole, Regimbau, Tania, Sakellariadou, Mairi
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 20.09.2021
Subjects
Coalescing
Frequencies
Gravitational waves
Physics - Cosmology and Nongalactic Astrophysics
Physics - General Relativity and Quantum Cosmology
Physics - Solar and Stellar Astrophysics
Population III stars
Stellar populations
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Summary:We investigate detection prospects of the gravitational-wave background (GWB) that originates from the merging of compact objects formed by the collapse of population III stars. Younger population I/II stars lead to a GWB in the LIGO/Virgo frequency band at the inspiral phase, while population III stars would likely show up at the later merger and ringdown phases. We show that, using a network of third-generation detectors, we may be able to separate a population I/II signal from a population III one, provided we can subtract individual coalescence events. A detection of a population III GWB could reveal important information, such as the average redshifted total mass.
ISSN:2331-8422
DOI:10.48550/arxiv.2109.09779