Work

Can we detect a supertranslated black hole?

Year: 2022

Type: article

Abstract: We attempt to address the question of whether standard tests of general relativity can detect the presence of a black hole carrying a supertranslation field. In this regard, we study the photon sphere of a dynamical black hole carrying a supertranslation hair. We find that the dynamics of the photon sphere is quite subtle and it may offer an opportunity to differentiate a supertranslated black hole from its bald counterpart. This represents a first step toward understanding the observational signatures of a supertranslated dynamical black hole.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.105.084001

Authors: Subhodeep Sarkar, Shailesh Kumar, Srijit Bhattacharjee

Institution: Indian Institute of Information Technology Allahabad

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Department of Science and Technology, Ministry of Science and Technology, India, Science and Engineering Research Board

Award: G2778814598