Transient scalar hair for nearly extreme black holes
It has been shown recently that extreme Reissner-Nordström black holes perturbed by a minimally coupled, free, massless scalar field have permanent scalar hair. The hair, a conserved charge calculated at the black hole's event horizon, can be measured by a certain expression at future null infi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2019-11-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.1.033106 |
| _version_ | 1797211647016697856 |
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| author | Lior M. Burko Gaurav Khanna Subir Sabharwal |
| author_facet | Lior M. Burko Gaurav Khanna Subir Sabharwal |
| author_sort | Lior M. Burko |
| collection | DOAJ |
| description | It has been shown recently that extreme Reissner-Nordström black holes perturbed by a minimally coupled, free, massless scalar field have permanent scalar hair. The hair, a conserved charge calculated at the black hole's event horizon, can be measured by a certain expression at future null infinity: The latter approaches the hair inversely in time. We generalize this newly discovered hair also for extreme Kerr black holes. We study the behavior of nearly extreme black hole hair and its measurement at future null infinity as a transient phenomenon. For nearly extreme black holes the measurement at future null infinity of the length of the newly grown hair decreases quadratically in time at intermediate times until its length becomes short and the rate at which the length shortens further slows down. Eventually, the nearly extreme black hole becomes bald again like nonextreme black holes. |
| first_indexed | 2024-04-24T10:29:48Z |
| format | Article |
| id | doaj.art-03bfbde9714c490392a20bfbbf1fceb2 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:29:48Z |
| publishDate | 2019-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-03bfbde9714c490392a20bfbbf1fceb22024-04-12T16:46:57ZengAmerican Physical SocietyPhysical Review Research2643-15642019-11-011303310610.1103/PhysRevResearch.1.033106Transient scalar hair for nearly extreme black holesLior M. BurkoGaurav KhannaSubir SabharwalIt has been shown recently that extreme Reissner-Nordström black holes perturbed by a minimally coupled, free, massless scalar field have permanent scalar hair. The hair, a conserved charge calculated at the black hole's event horizon, can be measured by a certain expression at future null infinity: The latter approaches the hair inversely in time. We generalize this newly discovered hair also for extreme Kerr black holes. We study the behavior of nearly extreme black hole hair and its measurement at future null infinity as a transient phenomenon. For nearly extreme black holes the measurement at future null infinity of the length of the newly grown hair decreases quadratically in time at intermediate times until its length becomes short and the rate at which the length shortens further slows down. Eventually, the nearly extreme black hole becomes bald again like nonextreme black holes.http://doi.org/10.1103/PhysRevResearch.1.033106 |
| spellingShingle | Lior M. Burko Gaurav Khanna Subir Sabharwal Transient scalar hair for nearly extreme black holes Physical Review Research |
| title | Transient scalar hair for nearly extreme black holes |
| title_full | Transient scalar hair for nearly extreme black holes |
| title_fullStr | Transient scalar hair for nearly extreme black holes |
| title_full_unstemmed | Transient scalar hair for nearly extreme black holes |
| title_short | Transient scalar hair for nearly extreme black holes |
| title_sort | transient scalar hair for nearly extreme black holes |
| url | http://doi.org/10.1103/PhysRevResearch.1.033106 |
| work_keys_str_mv | AT liormburko transientscalarhairfornearlyextremeblackholes AT gauravkhanna transientscalarhairfornearlyextremeblackholes AT subirsabharwal transientscalarhairfornearlyextremeblackholes |