Understanding photon sphere and black hole shadow in dynamically evolving spacetimes

Show simple item record

dc.contributor.author Mishra, Akash K.
dc.contributor.author Chakraborty, Sumanta
dc.contributor.author Sarkar, Sudipta
dc.date.accessioned 2019-06-25T11:45:21Z
dc.date.available 2019-06-25T11:45:21Z
dc.date.issued 2019-05
dc.identifier.citation Mishra, Akash K.; Chakraborty, Sumanta and Sarkar, Sudipta, "Understanding photon sphere and black hole shadow in dynamically evolving spacetimes", Physical Review D, DOI: 10.1103/PhysRevD.99.104080, vol. 99, no. 10, May 2019. en_US
dc.identifier.issn 2470-0010
dc.identifier.issn 2470-0029
dc.identifier.uri https://doi.org/10.1103/PhysRevD.99.104080
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/4562
dc.description.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-Nordstr�m-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.
dc.description.statementofresponsibility by Akash K. Mishra, Sumanta Chakraborty and Sudipta Sarkar
dc.format.extent vol. 99, no. 10
dc.language.iso en en_US
dc.publisher APS en_US
dc.subject Alternative gravity theories en_US
dc.subject Classical black holes en_US
dc.title Understanding photon sphere and black hole shadow in dynamically evolving spacetimes en_US
dc.type Article en_US
dc.relation.journal Physical Review D


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Digital Repository


Browse

My Account