Acoustic clouds: Standing sound waves around a black hole analogue

Detalhes bibliográficos
Autor(a) principal: Benone, Carolina L.
Data de Publicação: 2015
Outros Autores: Crispino, Luis C. B., Herdeiro, Carlos, Radu, Eugen
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/15043
Resumo: Under certain conditions sound waves in fluids experience an acoustic horizon with analogue properties to those of a black hole event horizon. In particular, a draining bathtub-like model can give rise to a rotating acoustic horizon and hence a rotating black hole (acoustic) analogue. We show that sound waves, when enclosed in a cylindrical cavity, can form stationary waves around such rotating acoustic holes. These acoustic perturbations display similar properties to the scalar clouds that have been studied around Kerr and Kerr-Newman black holes; thus they are dubbed acoustic clouds. We make the comparison between scalar clouds around Kerr black holes and acoustic clouds around the draining bathtub explicit by studying also the properties of scalar clouds around Kerr black holes enclosed in a cavity. Acoustic clouds suggest the possibility of testing, experimentally, the existence and properties of black hole clouds, using analog models.
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spelling Acoustic clouds: Standing sound waves around a black hole analogueUnder certain conditions sound waves in fluids experience an acoustic horizon with analogue properties to those of a black hole event horizon. In particular, a draining bathtub-like model can give rise to a rotating acoustic horizon and hence a rotating black hole (acoustic) analogue. We show that sound waves, when enclosed in a cylindrical cavity, can form stationary waves around such rotating acoustic holes. These acoustic perturbations display similar properties to the scalar clouds that have been studied around Kerr and Kerr-Newman black holes; thus they are dubbed acoustic clouds. We make the comparison between scalar clouds around Kerr black holes and acoustic clouds around the draining bathtub explicit by studying also the properties of scalar clouds around Kerr black holes enclosed in a cavity. Acoustic clouds suggest the possibility of testing, experimentally, the existence and properties of black hole clouds, using analog models.American Physical Society2016-01-11T15:27:11Z2015-05-29T00:00:00Z2015-05-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/15043eng1550-799810.1103/PhysRevD.91.104038Benone, Carolina L.Crispino, Luis C. B.Herdeiro, CarlosRadu, Eugeninfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:27:41Zoai:ria.ua.pt:10773/15043Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:50:28.290395Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Acoustic clouds: Standing sound waves around a black hole analogue
title Acoustic clouds: Standing sound waves around a black hole analogue
spellingShingle Acoustic clouds: Standing sound waves around a black hole analogue
Benone, Carolina L.
title_short Acoustic clouds: Standing sound waves around a black hole analogue
title_full Acoustic clouds: Standing sound waves around a black hole analogue
title_fullStr Acoustic clouds: Standing sound waves around a black hole analogue
title_full_unstemmed Acoustic clouds: Standing sound waves around a black hole analogue
title_sort Acoustic clouds: Standing sound waves around a black hole analogue
author Benone, Carolina L.
author_facet Benone, Carolina L.
Crispino, Luis C. B.
Herdeiro, Carlos
Radu, Eugen
author_role author
author2 Crispino, Luis C. B.
Herdeiro, Carlos
Radu, Eugen
author2_role author
author
author
dc.contributor.author.fl_str_mv Benone, Carolina L.
Crispino, Luis C. B.
Herdeiro, Carlos
Radu, Eugen
description Under certain conditions sound waves in fluids experience an acoustic horizon with analogue properties to those of a black hole event horizon. In particular, a draining bathtub-like model can give rise to a rotating acoustic horizon and hence a rotating black hole (acoustic) analogue. We show that sound waves, when enclosed in a cylindrical cavity, can form stationary waves around such rotating acoustic holes. These acoustic perturbations display similar properties to the scalar clouds that have been studied around Kerr and Kerr-Newman black holes; thus they are dubbed acoustic clouds. We make the comparison between scalar clouds around Kerr black holes and acoustic clouds around the draining bathtub explicit by studying also the properties of scalar clouds around Kerr black holes enclosed in a cavity. Acoustic clouds suggest the possibility of testing, experimentally, the existence and properties of black hole clouds, using analog models.
publishDate 2015
dc.date.none.fl_str_mv 2015-05-29T00:00:00Z
2015-05-29
2016-01-11T15:27:11Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/15043
url http://hdl.handle.net/10773/15043
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1550-7998
10.1103/PhysRevD.91.104038
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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