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Constraints on black-hole charges with the 2017 EHT observations of M87*

Kocherlakota, P; Rezzolla, L; Falcke, H; Fromm, CM; Kramer, M; Mizuno, Y; Nathanail, A; ... Zhao, S-S; + view all (2021) Constraints on black-hole charges with the 2017 EHT observations of M87*. Physical Review D , 103 (10) , Article 104047. 10.1103/PhysRevD.103.104047. Green open access

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Abstract

Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M87* shadow size to infer constraints on the physical charges of a large variety of nonrotating or rotating black holes. For example, we show that the quality of the measurements is already sufficient to rule out that M87* is a highly charged dilaton black hole. Similarly, when considering black holes with two physical and independent charges, we are able to exclude considerable regions of the space of parameters for the doubly-charged dilaton and the Sen black holes.

Type: Article
Title: Constraints on black-hole charges with the 2017 EHT observations of M87*
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevD.103.104047
Publisher version: ttps://doi.org/10.1103/PhysRevD.103.104047
Language: English
Additional information: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10137747
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