Understanding photon sphere and black hole shadow in dynamically evolving spacetimes
We have derived the differential equation governing the evolution of the photon sphere for dynamical black hole spacetimes with or without spherical symmetry. Numerical solution of the same depicting evolution of the photon sphere has been presented for Vaidya, Reissner-Nordström-Vaidya and de Sitte...
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| Veröffentlicht in: | Physical review. D 2019-05, Vol.99 (10), p.104080, Article 104080 |
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| creator | Mishra, Akash K Chakraborty, Sumanta Sarkar, Sudipta |
| description | We have derived the differential equation governing the evolution of the photon sphere for dynamical black hole spacetimes with or without spherical symmetry. Numerical solution of the same depicting evolution of the photon sphere has been presented for Vaidya, Reissner-Nordström-Vaidya and de Sitter Vaidya spacetimes. It has been pointed out that evolution of the photon sphere depends crucially on the validity of the null energy condition by the infalling matter and may present an observational window to even test it through black hole shadow. We have also presented the evolution of the photon sphere for slowly rotating Kerr-Vaidya spacetime and associated structure of black hole shadow. Finally, the effective graviton metric for Einstein-Gauss-Bonnet gravity has been presented, and the graviton sphere has been contrasted with the photon sphere in this context. |
| doi_str_mv | 10.1103/PhysRevD.99.104080 |
| format | Article |
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Numerical solution of the same depicting evolution of the photon sphere has been presented for Vaidya, Reissner-Nordström-Vaidya and de Sitter Vaidya spacetimes. It has been pointed out that evolution of the photon sphere depends crucially on the validity of the null energy condition by the infalling matter and may present an observational window to even test it through black hole shadow. We have also presented the evolution of the photon sphere for slowly rotating Kerr-Vaidya spacetime and associated structure of black hole shadow. 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Finally, the effective graviton metric for Einstein-Gauss-Bonnet gravity has been presented, and the graviton sphere has been contrasted with the photon sphere in this context.</description><subject>Black holes</subject><subject>Differential equations</subject><subject>Evolution</subject><subject>Rotating spheres</subject><subject>Shadows</subject><subject>Spacetime</subject><issn>2470-0010</issn><issn>2470-0029</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNo9kFtLwzAUx4MoOOa-gE8BnztPLr3kUeYVBopsz-E0SW1n19Skm_TbuzH16fw5_C_wI-SawZwxELdv9Rjf3f5-rtScgYQCzsiEyxwSAK7O_zWDSzKLcQMHmYHKGZuQ1bqzLsQBO9t0H7Sv_eA7GvvaBUcPT1q2aD5p7VtHY43Wf9Omo3bscNsYbNuRur1v98ds7NG4odm6eEUuKmyjm_3eKVk_PqwWz8ny9ellcbdMjOBySGRZWSzSqjAClKssryQqk-cFcoZSyZRnTspSlSnjktvcpFAwFChKYUXGuJiSm1NvH_zXzsVBb_wudIdJzblMs1Sq_OjiJ5cJPsbgKt2HZoth1Az0EaD-A6iV0ieA4geV2GXK</recordid><startdate>20190515</startdate><enddate>20190515</enddate><creator>Mishra, Akash K</creator><creator>Chakraborty, Sumanta</creator><creator>Sarkar, Sudipta</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20190515</creationdate><title>Understanding photon sphere and black hole shadow in dynamically evolving spacetimes</title><author>Mishra, Akash K ; Chakraborty, Sumanta ; Sarkar, Sudipta</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c324t-4bfda85f8c309efd2f4a9c778a21a494526e44b9b51242d7c5081a3a3b3d36123</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Black holes</topic><topic>Differential equations</topic><topic>Evolution</topic><topic>Rotating spheres</topic><topic>Shadows</topic><topic>Spacetime</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mishra, Akash K</creatorcontrib><creatorcontrib>Chakraborty, Sumanta</creatorcontrib><creatorcontrib>Sarkar, Sudipta</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mishra, Akash K</au><au>Chakraborty, Sumanta</au><au>Sarkar, Sudipta</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Understanding photon sphere and black hole shadow in dynamically evolving spacetimes</atitle><jtitle>Physical review. D</jtitle><date>2019-05-15</date><risdate>2019</risdate><volume>99</volume><issue>10</issue><spage>104080</spage><pages>104080-</pages><artnum>104080</artnum><issn>2470-0010</issn><eissn>2470-0029</eissn><abstract>We have derived the differential equation governing the evolution of the photon sphere for dynamical black hole spacetimes with or without spherical symmetry. Numerical solution of the same depicting evolution of the photon sphere has been presented for Vaidya, Reissner-Nordström-Vaidya and de Sitter Vaidya spacetimes. 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| language | eng |
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| subjects | Black holes Differential equations Evolution Rotating spheres Shadows Spacetime |
| title | Understanding photon sphere and black hole shadow in dynamically evolving spacetimes |
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