The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture

Autores
Ranea Sandoval, Ignacio Francisco; García, Federico; Johannsen, Tim
Año de publicación
2015
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
In general relativity, black holes are uniquely described by the Kerr metric and, according to the cosmic censorship conjecture, curvature singularities are always hidden behind an event horizon. We study the effect of an external magnetic field on the observed light curves of orbiting hot spots in thin accretion disks in Kerr spacetimes with (black holes) and without (super-extreme solutions) horizons. We employ a ray-tracing algorithm to calculate the light curves and power spectra of such hot spots for uniform and dipolar magnetic field configurations and show that the presence of a dipolar magnetic field produces potentially observable signatures which might be useful to probe the nature of compact objects and to test the cosmic censorship conjecture.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
hot spot
magnetized accretion disk
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/168111
Acceder
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network_name_str SEDICI (UNLP)
spelling The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjectureRanea Sandoval, Ignacio FranciscoGarcía, FedericoJohannsen, TimCiencias Astronómicashot spotmagnetized accretion diskIn general relativity, black holes are uniquely described by the Kerr metric and, according to the cosmic censorship conjecture, curvature singularities are always hidden behind an event horizon. We study the effect of an external magnetic field on the observed light curves of orbiting hot spots in thin accretion disks in Kerr spacetimes with (black holes) and without (super-extreme solutions) horizons. We employ a ray-tracing algorithm to calculate the light curves and power spectra of such hot spots for uniform and dipolar magnetic field configurations and show that the presence of a dipolar magnetic field produces potentially observable signatures which might be useful to probe the nature of compact objects and to test the cosmic censorship conjecture.Facultad de Ciencias Astronómicas y Geofísicas2015-10info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf171-174http://sedici.unlp.edu.ar/handle/10915/168111enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-24948-3-4info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/167830info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:25:43Zoai:sedici.unlp.edu.ar:10915/168111Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:25:44.261SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
title The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
spellingShingle The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
Ranea Sandoval, Ignacio Francisco
Ciencias Astronómicas
hot spot
magnetized accretion disk
title_short The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
title_full The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
title_fullStr The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
title_full_unstemmed The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
title_sort The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
dc.creator.none.fl_str_mv Ranea Sandoval, Ignacio Francisco
García, Federico
Johannsen, Tim
author Ranea Sandoval, Ignacio Francisco
author_facet Ranea Sandoval, Ignacio Francisco
García, Federico
Johannsen, Tim
author_role author
author2 García, Federico
Johannsen, Tim
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
hot spot
magnetized accretion disk
topic Ciencias Astronómicas
hot spot
magnetized accretion disk
dc.description.none.fl_txt_mv In general relativity, black holes are uniquely described by the Kerr metric and, according to the cosmic censorship conjecture, curvature singularities are always hidden behind an event horizon. We study the effect of an external magnetic field on the observed light curves of orbiting hot spots in thin accretion disks in Kerr spacetimes with (black holes) and without (super-extreme solutions) horizons. We employ a ray-tracing algorithm to calculate the light curves and power spectra of such hot spots for uniform and dipolar magnetic field configurations and show that the presence of a dipolar magnetic field produces potentially observable signatures which might be useful to probe the nature of compact objects and to test the cosmic censorship conjecture.
Facultad de Ciencias Astronómicas y Geofísicas
description In general relativity, black holes are uniquely described by the Kerr metric and, according to the cosmic censorship conjecture, curvature singularities are always hidden behind an event horizon. We study the effect of an external magnetic field on the observed light curves of orbiting hot spots in thin accretion disks in Kerr spacetimes with (black holes) and without (super-extreme solutions) horizons. We employ a ray-tracing algorithm to calculate the light curves and power spectra of such hot spots for uniform and dipolar magnetic field configurations and show that the presence of a dipolar magnetic field produces potentially observable signatures which might be useful to probe the nature of compact objects and to test the cosmic censorship conjecture.
publishDate 2015
dc.date.none.fl_str_mv 2015-10
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
Objeto de conferencia
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/168111
url http://sedici.unlp.edu.ar/handle/10915/168111
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/isbn/978-987-24948-3-4
info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/167830
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
171-174
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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