Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A

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dc.contributor.authorVagnozzi, Sunny
dc.contributor.authorRoy, Rittick
dc.contributor.authorTsai, Yu-Dai
dc.contributor.authorVisinelli, Luca
dc.contributor.authorAfrin, Misba
dc.contributor.authorAllahyari, Alireza
dc.contributor.authorBambi, Cosimo
dc.date.accessioned2026-02-06T18:47:45Z
dc.date.issued2023
dc.departmentDoğu Akdeniz Üniversitesi
dc.description.abstractHorizon-scale images of black holes (BHs) and their shadows have opened an unprecedented window onto tests of gravity and fundamental physics in the strong-field regime. We consider a wide range of well-motivated deviations from classical general relativity (GR) BH solutions, and constrain them using the Event Horizon Telescope (EHT) observations of Sagittarius A *
dc.description.sponsorshipIsaac Newton Trust; Kavli Foundation; Foundation Blanceflor Boncompagni Ludovisi, ne Bildt; Shanghai Government Scholarship (SGS); U.S. National Science Foundation (NSF) Theoretical Physics Program [PHY-1915005]; NSF [PHY-1748958]; DST-INSPIRE Fellowship, Department of Science and Technology, Government of India; SERB-DST [CRG/2021/005771]; United States-India Educational Foundation (USIEF) through a Fulbright-Nehru Postdoctoral Research Fellowship [2847/FNPDR/2022]; National Research Foundation of South Africa (NRF); National Natural Science Foundation of China (NSFC) [11973019]; Natural Science Foundation of Shanghai [22ZR1403400]; Shanghai Municipal Education Commission [2019-01-07-00-07-E00035]; Fudan University [JIH1512604]
dc.description.sponsorshipWe thank Richard Brito, Yifan Chen, and Naoki Tsukamoto for useful discussions. S V was partially supported by the Isaac Newton Trust and the Kavli Foundation through a Newton-Kavli Fellowship, and by a grant from the Foundation Blanceflor Boncompagni Ludovisi, nee Bildt. R R is supported by the Shanghai Government Scholarship (SGS). Y-D T is supported by U.S. National Science Foundation (NSF) Theoretical Physics Program, Grant PHY-1915005, and also in part by the NSF under Grant No. NSF PHY-1748958. M A is supported by a DST-INSPIRE Fellowship, Department of Science and Technology, Government of India. S G G is supported by SERB-DST through Project No. CRG/2021/005771. R K W acknowledges support from the United States-India Educational Foundation (USIEF) through a Fulbright-Nehru Postdoctoral Research Fellowship (Award 2847/FNPDR/2022), and from the University of KwaZulu-Natal and Prof. Sunil Maharaj through a postdoctoral fellowship of the National Research Foundation of South Africa (NRF). A OE thanks Prof. Durmus Ali Demir for hospitality at Sabanci University while this work was being conducted. A OE acknowledges the contribution of the COST Action CA18108-Quantum gravity phenomenology in the multi-messenger approach (QG-MM). C B is supported by the National Natural Science Foundation of China (NSFC) through Grant No. 11973019, the Natural Science Foundation of Shanghai through Grant No. 22ZR1403400, the Shanghai Municipal Education Commission through Grant No. 2019-01-07-00-07-E00035, and Fudan University through Grant No. JIH1512604.
dc.identifier.doi10.1088/1361-6382/acd97b
dc.identifier.issn0264-9381
dc.identifier.issn1361-6382
dc.identifier.issue16
dc.identifier.orcid0000-0002-4553-2436
dc.identifier.orcid0000-0002-0835-3690
dc.identifier.orcid0000-0003-3714-5310
dc.identifier.orcid0000-0002-7614-6677
dc.identifier.orcid0000-0003-0527-4177
dc.identifier.orcid0000-0002-3180-9502
dc.identifier.orcid0000-0003-2471-1360
dc.identifier.scopus2-s2.0-85164504623
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1088/1361-6382/acd97b
dc.identifier.urihttps://hdl.handle.net/11129/14540
dc.identifier.volume40
dc.identifier.wosWOS:001033309500001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartofClassical and Quantum Gravity
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260204
dc.subjectblack holes
dc.subjectblack hole shadows
dc.subjecttests of gravity
dc.subjectwormholes
dc.subjectnaked singularities
dc.titleHorizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A
dc.typeArticle

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