A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates

Black holes have the peculiar and intriguing property of having an event horizon, a one-way membrane causally separating their internal region from the rest of the Universe. Today, astrophysical observations provide some evidence for the existence of event horizons in astrophysical black hole candid...

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Detalles Bibliográficos
Autor principal: Bambi, Cosimo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2013
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3703352/
https://www.ncbi.nlm.nih.gov/pubmed/23853532
http://dx.doi.org/10.1155/2013/204315
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author Bambi, Cosimo
author_facet Bambi, Cosimo
author_sort Bambi, Cosimo
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description Black holes have the peculiar and intriguing property of having an event horizon, a one-way membrane causally separating their internal region from the rest of the Universe. Today, astrophysical observations provide some evidence for the existence of event horizons in astrophysical black hole candidates. In this short paper, I compare the constraint we can infer from the nonobservation of electromagnetic radiation from the putative surface of these objects with the bound coming from the ergoregion instability, pointing out the respective assumptions and limitations.
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spelling pubmed-37033522013-07-12 A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates Bambi, Cosimo ScientificWorldJournal Research Article Black holes have the peculiar and intriguing property of having an event horizon, a one-way membrane causally separating their internal region from the rest of the Universe. Today, astrophysical observations provide some evidence for the existence of event horizons in astrophysical black hole candidates. In this short paper, I compare the constraint we can infer from the nonobservation of electromagnetic radiation from the putative surface of these objects with the bound coming from the ergoregion instability, pointing out the respective assumptions and limitations. Hindawi Publishing Corporation 2013-06-17 /pmc/articles/PMC3703352/ /pubmed/23853532 http://dx.doi.org/10.1155/2013/204315 Text en Copyright © 2013 Cosimo Bambi. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Bambi, Cosimo
A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates
title A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates
title_full A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates
title_fullStr A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates
title_full_unstemmed A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates
title_short A Note on the Observational Evidence for the Existence of Event Horizons in Astrophysical Black Hole Candidates
title_sort note on the observational evidence for the existence of event horizons in astrophysical black hole candidates
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3703352/
https://www.ncbi.nlm.nih.gov/pubmed/23853532
http://dx.doi.org/10.1155/2013/204315
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