Ringing of the Regular Black Hole with Asymptotically Minkowski Core

A Regge–Wheeler analysis is performed for a novel black hole mimicker ‘the regular black hole with asymptotically Minkowski core’, followed by an approximation of the permitted quasi-normal modes for propagating waveforms. A first-order WKB approximation is computed for spin zero and spin one pertur...

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Autor principal:	Alexander Marcus Simpson
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	regular black hole Minkowski core Lambert W function black hole mimic Regge–Wheeler potential quasi-normal modes Elementary particle physics QC793-793.5
Acceso en línea:	https://doaj.org/article/69a848a727024d4fa90bbf2c2ab2e19e
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id	oai:doaj.org-article:69a848a727024d4fa90bbf2c2ab2e19e
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spelling	oai:doaj.org-article:69a848a727024d4fa90bbf2c2ab2e19e2021-11-25T19:09:36ZRinging of the Regular Black Hole with Asymptotically Minkowski Core10.3390/universe71104182218-1997https://doaj.org/article/69a848a727024d4fa90bbf2c2ab2e19e2021-11-01T00:00:00Zhttps://www.mdpi.com/2218-1997/7/11/418https://doaj.org/toc/2218-1997A Regge–Wheeler analysis is performed for a novel black hole mimicker ‘the regular black hole with asymptotically Minkowski core’, followed by an approximation of the permitted quasi-normal modes for propagating waveforms. A first-order WKB approximation is computed for spin zero and spin one perturbations of the candidate spacetime. Subsequently, numerical results analysing the respective fundamental modes are compiled for various values of the <i>a</i> parameter (which quantifies the distortion from Schwarzschild spacetime), and for various multipole numbers <i>ℓ</i>. Both electromagnetic spin one fluctuations and scalar spin zero fluctuations on the background spacetime are found to possess shorter-lived, higher-energy signals than their Schwarzschild counterparts for a specific range of interesting values of the <i>a</i> parameter. Comparison between these results and some analogous results for both the Bardeen and Hayward regular black holes is considered. Analysis as to what happens when one permits perturbations of the Regge–Wheeler potential itself is then conducted, first in full generality, before specialising to Schwarzschild spacetime. A general result is presented explicating the shift in quasi-normal modes under perturbation of the Regge–Wheeler potential.Alexander Marcus SimpsonMDPI AGarticleregular black holeMinkowski coreLambert W functionblack hole mimicRegge–Wheeler potentialquasi-normal modesElementary particle physicsQC793-793.5ENUniverse, Vol 7, Iss 418, p 418 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	regular black hole Minkowski core Lambert W function black hole mimic Regge–Wheeler potential quasi-normal modes Elementary particle physics QC793-793.5
spellingShingle	regular black hole Minkowski core Lambert W function black hole mimic Regge–Wheeler potential quasi-normal modes Elementary particle physics QC793-793.5 Alexander Marcus Simpson Ringing of the Regular Black Hole with Asymptotically Minkowski Core
description	A Regge–Wheeler analysis is performed for a novel black hole mimicker ‘the regular black hole with asymptotically Minkowski core’, followed by an approximation of the permitted quasi-normal modes for propagating waveforms. A first-order WKB approximation is computed for spin zero and spin one perturbations of the candidate spacetime. Subsequently, numerical results analysing the respective fundamental modes are compiled for various values of the <i>a</i> parameter (which quantifies the distortion from Schwarzschild spacetime), and for various multipole numbers <i>ℓ</i>. Both electromagnetic spin one fluctuations and scalar spin zero fluctuations on the background spacetime are found to possess shorter-lived, higher-energy signals than their Schwarzschild counterparts for a specific range of interesting values of the <i>a</i> parameter. Comparison between these results and some analogous results for both the Bardeen and Hayward regular black holes is considered. Analysis as to what happens when one permits perturbations of the Regge–Wheeler potential itself is then conducted, first in full generality, before specialising to Schwarzschild spacetime. A general result is presented explicating the shift in quasi-normal modes under perturbation of the Regge–Wheeler potential.
format	article
author	Alexander Marcus Simpson
author_facet	Alexander Marcus Simpson
author_sort	Alexander Marcus Simpson
title	Ringing of the Regular Black Hole with Asymptotically Minkowski Core
title_short	Ringing of the Regular Black Hole with Asymptotically Minkowski Core
title_full	Ringing of the Regular Black Hole with Asymptotically Minkowski Core
title_fullStr	Ringing of the Regular Black Hole with Asymptotically Minkowski Core
title_full_unstemmed	Ringing of the Regular Black Hole with Asymptotically Minkowski Core
title_sort	ringing of the regular black hole with asymptotically minkowski core
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/69a848a727024d4fa90bbf2c2ab2e19e
work_keys_str_mv	AT alexandermarcussimpson ringingoftheregularblackholewithasymptoticallyminkowskicore
_version_	1718410220710920192

Ringing of the Regular Black Hole with Asymptotically Minkowski Core

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