Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black hole
Abstract We have studied electromagnetic line emissions from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime and then probe the effects of NUT charge on the electromagnetic line emissions. Due to the presence of the NUT charge, the equatorial plane is no more a symmetry plane...
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2019-06-01
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doaj-17d49b0b3538445aa3d59919b30017b62020-11-25T04:02:11ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-06-0179611210.1140/epjc/s10052-019-6989-8Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black holeFen Long0Songbai Chen1Jieci Wang2Jiliang Jing3Department of Physics, Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal UniversityDepartment of Physics, Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal UniversityDepartment of Physics, Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal UniversityDepartment of Physics, Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal UniversityAbstract We have studied electromagnetic line emissions from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime and then probe the effects of NUT charge on the electromagnetic line emissions. Due to the presence of the NUT charge, the equatorial plane is no more a symmetry plane of the KTN spacetime, which leads to that the dependence of electromagnetic line emission on the NUT charge for the observer in the Southern Hemisphere differs from that in the Northern one. Our result indicate that the electromagnetic line emission in the Kerr-Taub-NUT black hole case is brighter than that in the case of Kerr black hole for the observer in the equatorial plane or in the Southern Hemisphere, but it becomes more faint as the observer’s position deviates far from the equatorial plane in the Northern one. Moreover, we also probe effects of redshift factor on electromagnetic emission from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime.http://link.springer.com/article/10.1140/epjc/s10052-019-6989-8 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fen Long Songbai Chen Jieci Wang Jiliang Jing |
spellingShingle |
Fen Long Songbai Chen Jieci Wang Jiliang Jing Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black hole European Physical Journal C: Particles and Fields |
author_facet |
Fen Long Songbai Chen Jieci Wang Jiliang Jing |
author_sort |
Fen Long |
title |
Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black hole |
title_short |
Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black hole |
title_full |
Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black hole |
title_fullStr |
Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black hole |
title_full_unstemmed |
Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-NUT black hole |
title_sort |
electromagnetic emissions from near-horizon region of an extreme kerr-taub-nut black hole |
publisher |
SpringerOpen |
series |
European Physical Journal C: Particles and Fields |
issn |
1434-6044 1434-6052 |
publishDate |
2019-06-01 |
description |
Abstract We have studied electromagnetic line emissions from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime and then probe the effects of NUT charge on the electromagnetic line emissions. Due to the presence of the NUT charge, the equatorial plane is no more a symmetry plane of the KTN spacetime, which leads to that the dependence of electromagnetic line emission on the NUT charge for the observer in the Southern Hemisphere differs from that in the Northern one. Our result indicate that the electromagnetic line emission in the Kerr-Taub-NUT black hole case is brighter than that in the case of Kerr black hole for the observer in the equatorial plane or in the Southern Hemisphere, but it becomes more faint as the observer’s position deviates far from the equatorial plane in the Northern one. Moreover, we also probe effects of redshift factor on electromagnetic emission from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime. |
url |
http://link.springer.com/article/10.1140/epjc/s10052-019-6989-8 |
work_keys_str_mv |
AT fenlong electromagneticemissionsfromnearhorizonregionofanextremekerrtaubnutblackhole AT songbaichen electromagneticemissionsfromnearhorizonregionofanextremekerrtaubnutblackhole AT jieciwang electromagneticemissionsfromnearhorizonregionofanextremekerrtaubnutblackhole AT jiliangjing electromagneticemissionsfromnearhorizonregionofanextremekerrtaubnutblackhole |
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