Journal
PHYSICAL REVIEW LETTERS
Volume 125, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.141104
Keywords
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Categories
Funding
- Academy of Finland [274477, 284495, 312496]
- Advanced European Network of E-infrastructures for Astronomy with the SKA (AENEAS) project - European Commission Framework Programme Horizon 2020 Research and Innovation action [731016]
- Alexander von Humboldt Stiftung
- Black Hole Initiative at Harvard University from the John Templeton Foundation [60477]
- China Scholarship Council
- Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile) [PIA ACT172033]
- Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile, via Fondecyt Projects) [1171506, 3190878]
- Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile, via BASAL) [AFB-170002]
- Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile, via ALMA-conicyt) [31140007]
- Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico) [104497, 275201, 279006, 281692]
- Delaney Family via the Delaney Family John A. Wheeler Chair at Perimeter Institute
- Direccion General de Asuntos del Personal Academico, Universidad Nacional Autonoma de Mexico (DGAPA-UNAM) [IN112417]
- European Research Council Synergy Grant BlackHoleCam: Imaging the Event Horizon of Black Holes [610058]
- Generalitat Valenciana [APOSTD/2018/177]
- GenT Program [CIDEGENT/2018/021]
- Gordon and Betty Moore Foundation [GBMF-3561, GBMF-5278]
- Istituto Nazionale di Fisica Nucleare (INFN) sezione di Napoli, iniziative specifiche TEONGRAV
- International Max Planck Research School for Astronomy and Astrophysics at the University of Bonn
- International Max Planck Research School for Astronomy and Astrophysics at the University of Cologne
- Jansky Fellowship program of the National Radio Astronomy Observatory (NRAO)
- Japanese Government (Monbukagakusho:MEXT) Scholarship
- Japan Society for the Promotion of Science (JSPS) [JP17J08829]
- Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) [QYZDJ-SSW-SLH057, QYZDJSSW-SYS008, ZDBS-LY-SLH011]
- Leverhulme Trust Early Career Research Fellowship
- Max-Planck-Gesellschaft (MPG)
- Max Planck Partner Group of the MPG
- CAS
- MEXT/JSPS KAKENHI [18KK0090, JP18K13594, JP18K03656, JP18H03721, 18K03709, 18H01245, 25120007]
- MIT International Science and Technology Initiatives (MISTI) Funds
- Ministry of Science and Technology (MOST) of Taiwan [105-2112-M-001-025-MY3, 106-2112-M-001-011, 106-2119-M-001-027, 107-2119-M-001-017, 107-2119-M-001-020, 107-2119-M-110-005]
- National Aeronautics and Space Administration (NASA) - Space Telescope Science Institute [80NSSC17K0649, HST-HF2-51431.001-A]
- NASA [NAS5-26555]
- National Institute of Natural Sciences (NINS) of Japan
- National Key Research and Development Program of China [2016YFA0400704, 2016YFA0400702]
- National Science Foundation (NSF) [AST-0096454, AST-0352953, AST-0521233, AST-0705062, AST0905844, AST-0922984, AST-1126433, AST-1140030, DGE-1144085, AST-1207704, AST-1207730, AST-1207752, MRI-1228509]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- National Youth Thousand Talents Program of China
- National Research Foundation of Korea [NRF-2015H1A2A1033752, 2015-R1D1A1A01056807, NRF-2015H1D3A1066561]
- Netherlands Organization for Scientific Research (NWO) VICI award [639.043.513]
- Spinoza Prize [SPI 78-409]
- New Scientific Frontiers with Precision Radio Interferometry Fellowship - South African Radio Astronomy Observatory (SARAO)
- Swedish Research Council [2017-00648]
- Perimeter Institute for Theoretical Physics - Government of Canada through the Department of Innovation, Science and Economic Development
- Province of Ontario through the Ministry of Research, Innovation and Science
- Russian Science Foundation [17-12-01029]
- Spanish Ministerio de Economia y Competitividad [AYA2015-63939-C2-1-P, AYA2016-80889-P, PID2019-108995GB-C21]
- State Agency for Research of the Spanish MCIU through the Center of Excellence Severo Ochoa award for the Instituto de Astrofisica de Andalucia [SEV-2017-0709]
- Toray Science Foundation
- Consejeria de Economia, Conocimiento, Empresas y Universidad of the Junta de Andalucia [P18-FR-1769]
- Consejo Superior de Investigaciones Cientificas [2019AEP112]
- U.S. Department of Energy (DOE) through the Los Alamos National Laboratory [89233218CNA000001]
- Italian Ministero dell'Istruzione, dell'Universita e della Ricerca through the grant Progetti Premiali 2012-iALMA [CUP C52I13000140001]
- European Union's Horizon 2020 research and innovation programme [730562 RadioNet]
- ALMA North America Development Fund
- Academia Sinica
- Chandra [TM6-17006X]
- GenT Program (Generalitat Valenciana) Project [CIDEGENT/2018/021]
- NSF [ACI-1548562, DBI-0735191, DBI-1265383, DBI-1743442]
- Smithsonian Institution
- National Key R&D Program of China [2017YFA0402700]
- Science and Technologies Facility Council (UK)
- State of Arizona
- NSF Physics Frontier Center Grant [PHY1125897]
- Kavli Foundation
- Natural Science Foundation of China [11573051, 11633006, 11650110427, 10625314, 11721303, 11725312, 11933007]
- [OPP-1248097]
- [AST-1310896]
- [AST-1312651]
- [AST-1337663]
- [AST-1440254]
- [AST-1555365]
- [AST-1715061]
- [AST-1615796]
- [AST-1716327]
- [OISE-1743747]
- [AST-1816420]
- [PLR-1248097]
- STFC [ST/R001464/1, ST/R000786/1] Funding Source: UKRI
Ask authors/readers for more resources
The 2017 Event Horizon Telescope (EHT) observations of the central source in M87 have led to the first measurement of the size of a black-hole shadow. This observation offers a new and clean gravitational test of the black-hole metric in the strong-field regime. We show analytically that spacetimes that deviate from the Kerr metric but satisfy weak-field tests can lead to large deviations in the predicted black-hole shadows that are inconsistent with even the current EHT measurements. We use numerical calculations of regular, parametric, non-Kerr metrics to identify the common characteristic among these different parametrizations that control the predicted shadow size. We show that the shadow-size measurements place significant constraints on deviation parameters that control the second post-Newtonian and higher orders of each metric and are, therefore, inaccessible to weak-field tests. The new constraints are complementary to those imposed by observations of gravitational waves from stellar-mass sources.
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