@article{bd39695418224221b6f8ed08f4320eed,
title = "Constraints on black-hole charges with the 2017 EHT observations of M87∗",
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.",
author = "{(EHT Collaboration)} and Prashant Kocherlakota and Luciano Rezzolla and Heino Falcke and Fromm, {Christian M.} and Michael Kramer and Yosuke Mizuno and Antonios Nathanail and H{\'e}ctor Olivares and Ziri Younsi and Kazunori Akiyama and Antxon Alberdi and Walter Alef and Algaba, {Juan Carlos} and Richard Anantua and Keiichi Asada and Rebecca Azulay and Baczko, {Anne Kathrin} and David Ball and Mislav Balokovi{\'c} and John Barrett and Benson, {Bradford A.} and Dan Bintley and Lindy Blackburn and Raymond Blundell and Wilfred Boland and Bouman, {Katherine L.} and Bower, {Geoffrey C.} and Hope Boyce and Michael Bremer and Brinkerink, {Christiaan D.} and Roger Brissenden and Silke Britzen and Broderick, {Avery E.} and Dominique Broguiere and Thomas Bronzwaer and Byun, {Do Young} and Carlstrom, {John E.} and Andrew Chael and Chan, {Chi Kwan} and Shami Chatterjee and Koushik Chatterjee and Chen, {Ming Tang} and Yongjun Chen and Chesler, {Paul M.} and Ilje Cho and Pierre Christian and Conway, {John E.} and Cordes, {James M.} and Crawford, {Thomas M.} and Gammie, {Charles F.}",
note = "Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society.",
year = "2021",
month = may,
day = "20",
doi = "10.1103/PhysRevD.103.104047",
language = "English (US)",
volume = "103",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "10",
}