Blackhole in nonlocal gravity: comparing metric from Newmann–Janis algorithm with slowly rotating solution
Abstract The strong gravitational field near massive blackhole is an interesting regime to test General Relativity (GR) and modified gravity theories. The knowledge of spacetime metric around a blackhole is a primary step for such tests. Solving field equations for rotating blackhole is extremely ch...
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2020-07-01
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Series: | European Physical Journal C: Particles and Fields |
Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-8182-5 |
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doaj-45f49b306dea4ab58c07c92c18af0f4b2020-11-25T02:14:05ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-07-018071710.1140/epjc/s10052-020-8182-5Blackhole in nonlocal gravity: comparing metric from Newmann–Janis algorithm with slowly rotating solutionUtkarsh Kumar0Sukanta Panda1Avani Patel2Department of Physics, Ariel UniversityIndian Institute of Science Education and ResearchIndian Institute of Science Education and ResearchAbstract The strong gravitational field near massive blackhole is an interesting regime to test General Relativity (GR) and modified gravity theories. The knowledge of spacetime metric around a blackhole is a primary step for such tests. Solving field equations for rotating blackhole is extremely challenging task for the most modified gravity theories. Though the derivation of Kerr metric of GR is also demanding job, the magical Newmann–Janis algorithm does it without actually solving Einstein equation for rotating blackhole. Due to this notable success of Newmann–Janis algorithm in the case of Kerr metric, it has been being used to obtain rotating blackhole solution in modified gravity theories. In this work, we derive the spacetime metric for the external region of a rotating blackhole in a nonlocal gravity theory using Newmann–Janis algorithm. We also derive metric for a slowly rotating blackhole by perturbatively solving field equations of the theory. We discuss the applicability of Newmann–Janis algorithm to nonlocal gravity by comparing slow rotation limit of the metric obtained through Newmann–Janis algorithm with slowly rotating solution of the field equation.http://link.springer.com/article/10.1140/epjc/s10052-020-8182-5 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Utkarsh Kumar Sukanta Panda Avani Patel |
spellingShingle |
Utkarsh Kumar Sukanta Panda Avani Patel Blackhole in nonlocal gravity: comparing metric from Newmann–Janis algorithm with slowly rotating solution European Physical Journal C: Particles and Fields |
author_facet |
Utkarsh Kumar Sukanta Panda Avani Patel |
author_sort |
Utkarsh Kumar |
title |
Blackhole in nonlocal gravity: comparing metric from Newmann–Janis algorithm with slowly rotating solution |
title_short |
Blackhole in nonlocal gravity: comparing metric from Newmann–Janis algorithm with slowly rotating solution |
title_full |
Blackhole in nonlocal gravity: comparing metric from Newmann–Janis algorithm with slowly rotating solution |
title_fullStr |
Blackhole in nonlocal gravity: comparing metric from Newmann–Janis algorithm with slowly rotating solution |
title_full_unstemmed |
Blackhole in nonlocal gravity: comparing metric from Newmann–Janis algorithm with slowly rotating solution |
title_sort |
blackhole in nonlocal gravity: comparing metric from newmann–janis algorithm with slowly rotating solution |
publisher |
SpringerOpen |
series |
European Physical Journal C: Particles and Fields |
issn |
1434-6044 1434-6052 |
publishDate |
2020-07-01 |
description |
Abstract The strong gravitational field near massive blackhole is an interesting regime to test General Relativity (GR) and modified gravity theories. The knowledge of spacetime metric around a blackhole is a primary step for such tests. Solving field equations for rotating blackhole is extremely challenging task for the most modified gravity theories. Though the derivation of Kerr metric of GR is also demanding job, the magical Newmann–Janis algorithm does it without actually solving Einstein equation for rotating blackhole. Due to this notable success of Newmann–Janis algorithm in the case of Kerr metric, it has been being used to obtain rotating blackhole solution in modified gravity theories. In this work, we derive the spacetime metric for the external region of a rotating blackhole in a nonlocal gravity theory using Newmann–Janis algorithm. We also derive metric for a slowly rotating blackhole by perturbatively solving field equations of the theory. We discuss the applicability of Newmann–Janis algorithm to nonlocal gravity by comparing slow rotation limit of the metric obtained through Newmann–Janis algorithm with slowly rotating solution of the field equation. |
url |
http://link.springer.com/article/10.1140/epjc/s10052-020-8182-5 |
work_keys_str_mv |
AT utkarshkumar blackholeinnonlocalgravitycomparingmetricfromnewmannjanisalgorithmwithslowlyrotatingsolution AT sukantapanda blackholeinnonlocalgravitycomparingmetricfromnewmannjanisalgorithmwithslowlyrotatingsolution AT avanipatel blackholeinnonlocalgravitycomparingmetricfromnewmannjanisalgorithmwithslowlyrotatingsolution |
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