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Stochastic gravitational wave background anisotropies in the mHz band: Astrophysical dependencies

MPG-Autoren
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Dvorkin,  I.
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1904.07757.pdf
(Preprint), 496KB

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Zitation

Cusin, G., Dvorkin, I., Pitrou, C., & Uzan, J.-P. (2020). Stochastic gravitational wave background anisotropies in the mHz band: Astrophysical dependencies. Monthly Notices of the Royal Astronomical Society: Letters, 493(1), L1-L5. doi:10.1093/mnrasl/slz182.


Zitierlink: https://hdl.handle.net/21.11116/0000-0003-9F1A-E
Zusammenfassung
This letter characterizes the properties of the angular power spectrum in
both the LIGO/Virgo and LISA frequency bands. It explores a wide range of
self-consistent astrophysical models all calibrated such that they predict the
same number of resolved mergers to fit the actual LIGO/Virgo number of
detections during O1+O2 observations runs. It shows that the anisotropies
depend on various ingredients of the astrophysical models, such as the black
hole formation model, the distribution of initial binary parameters and the
presence of a mass gap in the black hole mass distribution. This indicates that
the anisotropies of the stochastic background contain additional information on
sub-galactic processes, complementary to the isotropic background and
individual mergers. This letters also presents the first predictions of the
anisotropies in the LISA frequency band.