Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter

Focusing on the rotating black hole (BH) surrounded by the anisotropic fluid matters; radiation, dust, and dark matter, we study the massive scalar superradiant scattering and the stability in the Kiselev spacetime. Superradiance behavior is dependent on the intensity parameter of the anisotropic ma...

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Autores principales:	Mohsen Khodadi, Reza Pourkhodabakhshi
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Black hole superradiance Superradiant stability Anisotropic fluid matter Physics QC1-999
Acceso en línea:	https://doaj.org/article/22a2391a0e2a4c12bb8a062af78462a6
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spelling	oai:doaj.org-article:22a2391a0e2a4c12bb8a062af78462a62021-12-04T04:32:42ZSuperradiance and stability of Kerr black hole enclosed by anisotropic fluid matter0370-269310.1016/j.physletb.2021.136775https://doaj.org/article/22a2391a0e2a4c12bb8a062af78462a62021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0370269321007152https://doaj.org/toc/0370-2693Focusing on the rotating black hole (BH) surrounded by the anisotropic fluid matters; radiation, dust, and dark matter, we study the massive scalar superradiant scattering and the stability in the Kiselev spacetime. Superradiance behavior is dependent on the intensity parameter of the anisotropic matter K in the Kiselev spacetime. By adopting the manifest of low-frequency and low-mass for the scalar perturbation, we find K<0 enhances the superradiance scattering within the broader frequency range, compared to K=0 while K>0 suppresses within the narrower frequency range. As a result, the radiation and dark matter around the rotating BH act as amplifier and attenuator for the massive scalar superradiance, respectively. This is while the dust has a twofold role because of admitting both signs of K. Through stability analysis in the light of the BH bomb mechanism, we show in the presence of dark matter, the instability regime of standard Kerr BH (K=0) gets improved in favor of stabilization while the radiation and dust do not affect it. In other words, by taking the dark matter fluid around BH into account, we obtain a broader regime that allows the massive scalar field dynamic to enjoy superradiant stability.Mohsen KhodadiReza PourkhodabakhshiElsevierarticleBlack hole superradianceSuperradiant stabilityAnisotropic fluid matterPhysicsQC1-999ENPhysics Letters B, Vol 823, Iss , Pp 136775- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Black hole superradiance Superradiant stability Anisotropic fluid matter Physics QC1-999
spellingShingle	Black hole superradiance Superradiant stability Anisotropic fluid matter Physics QC1-999 Mohsen Khodadi Reza Pourkhodabakhshi Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter
description	Focusing on the rotating black hole (BH) surrounded by the anisotropic fluid matters; radiation, dust, and dark matter, we study the massive scalar superradiant scattering and the stability in the Kiselev spacetime. Superradiance behavior is dependent on the intensity parameter of the anisotropic matter K in the Kiselev spacetime. By adopting the manifest of low-frequency and low-mass for the scalar perturbation, we find K<0 enhances the superradiance scattering within the broader frequency range, compared to K=0 while K>0 suppresses within the narrower frequency range. As a result, the radiation and dark matter around the rotating BH act as amplifier and attenuator for the massive scalar superradiance, respectively. This is while the dust has a twofold role because of admitting both signs of K. Through stability analysis in the light of the BH bomb mechanism, we show in the presence of dark matter, the instability regime of standard Kerr BH (K=0) gets improved in favor of stabilization while the radiation and dust do not affect it. In other words, by taking the dark matter fluid around BH into account, we obtain a broader regime that allows the massive scalar field dynamic to enjoy superradiant stability.
format	article
author	Mohsen Khodadi Reza Pourkhodabakhshi
author_facet	Mohsen Khodadi Reza Pourkhodabakhshi
author_sort	Mohsen Khodadi
title	Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter
title_short	Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter
title_full	Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter
title_fullStr	Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter
title_full_unstemmed	Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter
title_sort	superradiance and stability of kerr black hole enclosed by anisotropic fluid matter
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/22a2391a0e2a4c12bb8a062af78462a6
work_keys_str_mv	AT mohsenkhodadi superradianceandstabilityofkerrblackholeenclosedbyanisotropicfluidmatter AT rezapourkhodabakhshi superradianceandstabilityofkerrblackholeenclosedbyanisotropicfluidmatter
_version_	1718373019337883648

Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter

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