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Black holes in galaxies: environmental impact on gravitational-wave generation and propagation

Black holes in galaxies: environmental impact on gravitational-wave generation and propagation
Black holes in galaxies: environmental impact on gravitational-wave generation and propagation

We introduce a family of solutions of Einstein's gravity minimally coupled to an anisotropic fluid, describing asymptotically flat black holes with "hair"and a regular horizon. These spacetimes can describe the geometry of galaxies harboring supermassive black holes, and are extensions of Einstein clusters to include horizons. They are useful to constrain the environment surrounding astrophysical black holes, using electromagnetic or gravitational-wave observations. We compute the main properties of the geometry, including the corrections to the ringdown stage induced by the external matter and fluxes by orbiting particles. The leading order effect to these corrections is a gravitational-redshift, but gravitational-wave propagation is affected by the galactic potential in a nontrivial way, and may be characterized with future observatories.

2470-0010
Cardoso, Vitor
08c1bdef-b56a-4067-ab37-89a9ece74fb7
Destounis, Kyriakos
419d13e5-3105-4092-9bb8-36014d4b574d
Duque, Francisco
60a077b7-ba4b-4314-855b-43ed6668e185
Macedo, Rodrigo Panosso
8f176eb4-ca20-492b-a41e-e78d47d6fefe
Maselli, Andrea
b41341b2-e44d-41be-a63e-7f0f6c9cc743
Cardoso, Vitor
08c1bdef-b56a-4067-ab37-89a9ece74fb7
Destounis, Kyriakos
419d13e5-3105-4092-9bb8-36014d4b574d
Duque, Francisco
60a077b7-ba4b-4314-855b-43ed6668e185
Macedo, Rodrigo Panosso
8f176eb4-ca20-492b-a41e-e78d47d6fefe
Maselli, Andrea
b41341b2-e44d-41be-a63e-7f0f6c9cc743

Cardoso, Vitor, Destounis, Kyriakos, Duque, Francisco, Macedo, Rodrigo Panosso and Maselli, Andrea (2022) Black holes in galaxies: environmental impact on gravitational-wave generation and propagation. Physical Review D, 105 (6), [L061501]. (doi:10.1103/PhysRevD.105.L061501).

Record type: Article

Abstract

We introduce a family of solutions of Einstein's gravity minimally coupled to an anisotropic fluid, describing asymptotically flat black holes with "hair"and a regular horizon. These spacetimes can describe the geometry of galaxies harboring supermassive black holes, and are extensions of Einstein clusters to include horizons. They are useful to constrain the environment surrounding astrophysical black holes, using electromagnetic or gravitational-wave observations. We compute the main properties of the geometry, including the corrections to the ringdown stage induced by the external matter and fluxes by orbiting particles. The leading order effect to these corrections is a gravitational-redshift, but gravitational-wave propagation is affected by the galactic potential in a nontrivial way, and may be characterized with future observatories.

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Black holes in galaxies - Accepted Manuscript
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Accepted/In Press date: 23 February 2022
Published date: 15 March 2022

Identifiers

Local EPrints ID: 456602
URI: http://eprints.soton.ac.uk/id/eprint/456602
ISSN: 2470-0010
PURE UUID: d2628fe4-0975-4101-917e-30bb61fffa1e
ORCID for Rodrigo Panosso Macedo: ORCID iD orcid.org/0000-0003-2942-5080

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Date deposited: 05 May 2022 16:49
Last modified: 29 Jun 2022 02:07

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Contributors

Author: Vitor Cardoso
Author: Kyriakos Destounis
Author: Francisco Duque
Author: Andrea Maselli

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