Stochastic gravitational wave background from cosmological neutrino-dominated accretion flows

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Autori principali:	Wei, Yun-Feng, Liu, Tong
Natura:	Preprint
Pubblicazione:	2024
Soggetti:	High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology
Accesso online:	Acceder al recurso
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author	Wei, Yun-Feng Liu, Tong
author_facet	Wei, Yun-Feng Liu, Tong
contents	We investigate the stochastic gravitational wave background (SGWB) from neutrino-dominated accretion flows (NDAFs) based on the results of our fallback core-collapse supernova (CCSN) simulations. We find that the predicted SGWB is mainly determined by the typical CCSN initial explosion energy and progenitor metallicity. For the optimistic cases in which the typical initial explosion energy is low, the SGWB from NDAFs without disk outflows might be detected by next-generation space-based interferometers such as Decihertz Interferometer Gravitational wave Observatory (DECIGO) and Big Bang Observer (BBO). In the low-frequency regime $\sim10^{-3}-10^{-1}$ Hz, this background is comparable to that expected from standard inflationary models. Therefore, the SGWB from NDAFs may become a foreground for searches of the SGWB generated in the inflationary epoch. Combining the diffuse NDAF neutrino background and SGWB from NDAFs, one may constrain the properties of the CCSNe and NDAFs.
format	Preprint
id	arxiv_https___arxiv_org_abs_2408_00546
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Stochastic gravitational wave background from cosmological neutrino-dominated accretion flows Wei, Yun-Feng Liu, Tong High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology We investigate the stochastic gravitational wave background (SGWB) from neutrino-dominated accretion flows (NDAFs) based on the results of our fallback core-collapse supernova (CCSN) simulations. We find that the predicted SGWB is mainly determined by the typical CCSN initial explosion energy and progenitor metallicity. For the optimistic cases in which the typical initial explosion energy is low, the SGWB from NDAFs without disk outflows might be detected by next-generation space-based interferometers such as Decihertz Interferometer Gravitational wave Observatory (DECIGO) and Big Bang Observer (BBO). In the low-frequency regime $\sim10^{-3}-10^{-1}$ Hz, this background is comparable to that expected from standard inflationary models. Therefore, the SGWB from NDAFs may become a foreground for searches of the SGWB generated in the inflationary epoch. Combining the diffuse NDAF neutrino background and SGWB from NDAFs, one may constrain the properties of the CCSNe and NDAFs.
title	Stochastic gravitational wave background from cosmological neutrino-dominated accretion flows
topic	High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology
url	https://arxiv.org/abs/2408.00546

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