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Properties of the stochastic astrophysical gravitational wave background: astrophysical sources dependencies

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arxiv 1904.07797 v3 pith:2ZTNAHO6 submitted 2019-04-16 astro-ph.CO astro-ph.GA

Properties of the stochastic astrophysical gravitational wave background: astrophysical sources dependencies

classification astro-ph.CO astro-ph.GA
keywords astrophysicalagwbanisotropiesangularbackgroundgravitationalmodelsparameters
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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This article explores the properties (amplitude and shape) of the angular power spectrum of the anisotropies of the astrophysical gravitational wave background (AGWB) focusing on the signatures of the astrophysical models describing sub-galactic physics. It demonstrates that while some parameters have negligible impact others, and in particular the stellar evolution models, the metallicity and the merger time delay distribution can result in relative differences of order 40% in the angular power spectrum of anisotropies in both the LIGO/Virgo and LISA frequency bands. It is also shown that the monopole and the anisotropic components of the AGWB are complementary and sensitive to different astrophysical parameters. It follows that AGWB anisotropies are a new observable with the potential to provide new astrophysical information that can not be accessed otherwise.

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Cited by 4 Pith papers

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