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

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...

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Autores principales: Ranea Sandoval, Ignacio Francisco, García, Federico, Johannsen, Tim
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Astronómicas
hot spot
magnetized accretion disk
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/168111
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SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-168111
record_format dspace
spelling I19-R120-10915-1681112024-07-29T20:02:04Z http://sedici.unlp.edu.ar/handle/10915/168111 The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture Ranea Sandoval, Ignacio Francisco García, Federico Johannsen, Tim 2015-10 2016 2024-07-29T15:32:52Z en Ciencias Astronómicas hot spot magnetized accretion disk 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 Objeto de conferencia Objeto de conferencia http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 171-174
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
hot spot
magnetized accretion disk
spellingShingle Ciencias Astronómicas
hot spot
magnetized accretion disk
Ranea Sandoval, Ignacio Francisco
García, Federico
Johannsen, Tim
The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
topic_facet Ciencias Astronómicas
hot spot
magnetized accretion disk
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.
format Objeto de conferencia
Objeto de conferencia
author Ranea Sandoval, Ignacio Francisco
García, Federico
Johannsen, Tim
author_facet Ranea Sandoval, Ignacio Francisco
García, Federico
Johannsen, Tim
author_sort Ranea Sandoval, Ignacio Francisco
title The imprint of hot spots on magnetized Kerr accretion disks: probing the cosmic censorship conjecture
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 imprint of hot spots on magnetized kerr accretion disks: probing the cosmic censorship conjecture
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/168111
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