Constraints on black-hole charges with the 2017 EHT observations of M87∗
Artikel i vetenskaplig tidskrift, 2021
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.
Författare
Prashant Kocherlakota
Johann Wolfgang Goethe Universität Frankfurt am Main
Luciano Rezzolla
Johann Wolfgang Goethe Universität Frankfurt am Main
Trinity College Dublin
Heino Falcke
Radboud Universiteit
Christian M. Fromm
Harvard University
Johann Wolfgang Goethe Universität Frankfurt am Main
Harvard-Smithsonian Center for Astrophysics
John Conway
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Michael Lindqvist
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Physical Review D
2470-0010 (ISSN) 2470-0029 (eISSN)
Vol. 103 10 104047Ämneskategorier
Subatomär fysik
Astronomi, astrofysik och kosmologi
DOI
10.1103/PhysRevD.103.104047