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Astrophysics > Cosmology and Nongalactic Astrophysics

arXiv:1803.03236 (astro-ph)
[Submitted on 8 Mar 2018 (v1), last revised 18 May 2018 (this version, v2)]

Title:First predictions of the angular power spectrum of the astrophysical gravitational wave background

Authors:Giulia Cusin, Irina Dvorkin, Cyril Pitrou, Jean-Philippe Uzan
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Abstract:We present the first predictions for the angular power spectrum of the astrophysical gravitational wave background constituted of the radiation emitted by all resolved and unresolved astrophysical sources. Its shape and amplitude depend on both the astrophysical properties on galactic scales and on cosmological properties. We show that the angular power spectrum behaves as $C_{\ell}\propto 1/{\ell}$ on large scales and that relative fluctuations of the signal are of order 30% at 100 Hz. We also present the correlations of the astrophysical gravitational wave background with weak-lensing and galaxy distribution. These numerical results pave the way to the study of a new observable at the crossroad between general relativity, astrophysics and cosmology.
Comments: 5 pages, 4 figures
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO); Astrophysics of Galaxies (astro-ph.GA); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th)
Cite as: arXiv:1803.03236 [astro-ph.CO]
  (or arXiv:1803.03236v2 [astro-ph.CO] for this version)
  https://doi.org/10.48550/arXiv.1803.03236
Journal reference: Phys. Rev. Lett. 120, 231101 (2018)
Related DOI: https://doi.org/10.1103/PhysRevLett.120.231101

Submission history

From: Giulia Cusin [view email]
[v1] Thu, 8 Mar 2018 18:09:13 UTC (232 KB)
[v2] Fri, 18 May 2018 15:43:15 UTC (233 KB)
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