The extreme orbital period in scalar hairy kerr black holes
In a very interesting paper, Hod has proven that the equatorial null circular geodesic provides the extreme orbital period to circle a kerr black hole, which is closely related to the Fermat's principle. In the present paper, we extend the discussion to kerr black holes with scalar field hair....
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| Format: | Article |
| Language: | English |
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Elsevier
2019-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269319301777 |
| _version_ | 1818285893685870592 |
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| author | Yan Peng |
| author_facet | Yan Peng |
| author_sort | Yan Peng |
| collection | DOAJ |
| description | In a very interesting paper, Hod has proven that the equatorial null circular geodesic provides the extreme orbital period to circle a kerr black hole, which is closely related to the Fermat's principle. In the present paper, we extend the discussion to kerr black holes with scalar field hair. We show that the circle with the extreme orbital period is still identical to the null circular geodesic. Our analysis also implies that the Hod's theorem may be a general property in any axially symmetric spacetime with reflection symmetry on the equatorial plane. |
| first_indexed | 2024-12-13T01:15:56Z |
| format | Article |
| id | doaj.art-0c8789fb34d647f0b7be49331059ccdc |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-13T01:15:56Z |
| publishDate | 2019-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-0c8789fb34d647f0b7be49331059ccdc2022-12-22T00:04:20ZengElsevierPhysics Letters B0370-26932019-05-0179213The extreme orbital period in scalar hairy kerr black holesYan Peng0School of Mathematical Sciences, Qufu Normal University, Qufu, Shandong 273165, ChinaIn a very interesting paper, Hod has proven that the equatorial null circular geodesic provides the extreme orbital period to circle a kerr black hole, which is closely related to the Fermat's principle. In the present paper, we extend the discussion to kerr black holes with scalar field hair. We show that the circle with the extreme orbital period is still identical to the null circular geodesic. Our analysis also implies that the Hod's theorem may be a general property in any axially symmetric spacetime with reflection symmetry on the equatorial plane.http://www.sciencedirect.com/science/article/pii/S0370269319301777 |
| spellingShingle | Yan Peng The extreme orbital period in scalar hairy kerr black holes Physics Letters B |
| title | The extreme orbital period in scalar hairy kerr black holes |
| title_full | The extreme orbital period in scalar hairy kerr black holes |
| title_fullStr | The extreme orbital period in scalar hairy kerr black holes |
| title_full_unstemmed | The extreme orbital period in scalar hairy kerr black holes |
| title_short | The extreme orbital period in scalar hairy kerr black holes |
| title_sort | extreme orbital period in scalar hairy kerr black holes |
| url | http://www.sciencedirect.com/science/article/pii/S0370269319301777 |
| work_keys_str_mv | AT yanpeng theextremeorbitalperiodinscalarhairykerrblackholes AT yanpeng extremeorbitalperiodinscalarhairykerrblackholes |