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First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

文献类型：期刊论文

作者Akiyama, Kazunori7,8,9; Alberdi, Antxon10; Alef, Walter11; Algaba, Juan Carlos12; Anantua, Richard9,13,14; Asada, Keiichi16; Azulay, Rebecca11,17,18; Bach, Uwe11; Baczko, Anne-Kathrin11; Ball, David19
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2022-05-01
卷号930期号:2
ISSN号2041-8205
DOI10.3847/2041-8213/ac6674
产权排序第100完成单位
文献子类Article
英文摘要

We present the first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A*), the Galactic center source associated with a supermassive black hole. These observations were conducted in 2017 using a global interferometric array of eight telescopes operating at a wavelength of lambda = 1.3 mm. The EHT data resolve a compact emission region with intrahour variability. A variety of imaging and modeling analyses all support an image that is dominated by a bright, thick ring with a diameter of 51.8 +/- 2.3 mu as (68% credible interval). The ring has modest azimuthal brightness asymmetry and a comparatively dim interior. Using a large suite of numerical simulations, we demonstrate that the EHT images of Sgr A* are consistent with the expected appearance of a Kerr black hole with mass similar to 4 x 10(6) M (circle dot), which is inferred to exist at this location based on previous infrared observations of individual stellar orbits, as well as maser proper-motion studies. Our model comparisons disfavor scenarios where the black hole is viewed at high inclination (i > 50 degrees), as well as nonspinning black holes and those with retrograde accretion disks. Our results provide direct evidence for the presence of a supermassive black hole at the center of the Milky Way, and for the first time we connect the predictions from dynamical measurements of stellar orbits on scales of 10(3)-10(5) gravitational radii to event-horizon-scale images and variability. Furthermore, a comparison with the EHT results for the supermassive black hole M87* shows consistency with the predictions of general relativity spanning over three orders of magnitude in central mass.

学科主题天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词ADVECTION-DOMINATED ACCRETION ; MAGNETIC-FIELD STRUCTURE ; ACTIVE GALACTIC NUCLEI ; X-RAY-EMISSION ; SGR-A ; VLBI OBSERVATIONS ; LINEAR-POLARIZATION ; INTRINSIC SIZE ; SCALE STRUCTURE ; RADIO-SOURCE
资助项目Academia Sinica ; Academy of Finland[274477] ; Academy of Finland[284495] ; Academy of Finland[312496] ; Academy of Finland[315721] ; Agencia Nacional de Investigacion y Desarrollo (ANID), Chile[NCN19_058] ; Fondecyt[1221421] ; Alexander von Humboldt Stiftung ; Alfred P. Sloan Research Fellowship ; European ALMA Regional Centre node in the Netherlands ; NL astronomy research network NOVA ; ALMA North America Development Fund ; Black Hole Initiative - John Templeton Foundation ; Gordon and Betty Moore Foundation ; China Scholarship Council ; China Postdoctoral Science Foundation fellowship[2020M671266] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[U0004246083] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[U0004-259839] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[F0003-272050] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[M0037-279006] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[F0003-281692] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[104497] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[275201] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[263356] ; Consejeria de Economia, Conocimiento, Empresas y Universidad of the Junta de Andalucia[P18-FR-1769] ; Consejo Superior de Investigaciones Cientificas[2019AEP112] ; 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] ; Direccion General de Asuntos del Personal Academico-Universidad Nacional Autonoma de Mexico (DGAPA-UNAM)[IN112820] ; Dutch Organization for Scientific Research (NWO)[639.043.513] ; Dutch Organization for Scientific Research (NWO)[OCENW.KLEIN.113] ; Dutch National Supercomputers, Cartesius and Snellius (NWO)[2021.013] ; EACOA Fellowship - East Asia Core Observatories Association ; European Research Council (ERC)[610058] ; European Union[730562] ; European Union[101018682] ; Generalitat Valenciana[APOSTD/2018/177] ; GenT Program[CIDEGENT/2018/021] ; MICINN[PID2019-108995GB-C22] ; European Research Council[884631] ; Institute for Advanced Study ; 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 Cologne ; DFG[FR 4069/2-1] ; Simons Foundation ; Japan Ministry of Education, Culture, Sports, Science and Technology (MEXT)[JPMXP1020200109] ; Japanese Government (Monbukagakusho: MEXT) Scholarship ; Japan Society for the Promotion of Science (JSPS)[JP17J08829] ; Joint Institute for Computational Fundamental Science, Japan ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDJ-SSW-SLH057] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDJSSW-SYS008] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[ZDBS-LY-SLH011] ; Leverhulme Trust Early Career Research Fellowship ; Max-PlanckGesellschaft (MPG) ; Max Planck Partner Group of the MPG ; CAS ; MEXT/JSPS KAKENHI[18KK0090] ; MEXT/JSPS KAKENHI[JP21H01137] ; MEXT/JSPS KAKENHI[JP18H03721] ; MEXT/JSPS KAKENHI[JP18K13594] ; MEXT/JSPS KAKENHI[18K03709] ; MEXT/JSPS KAKENHI[JP19K14761] ; MEXT/JSPS KAKENHI[18H01245] ; MEXT/JSPS KAKENHI[25120007] ; Malaysian Fundamental Research Grant Scheme (FRGS)[FRGS/1/2019/STG02/UM/02/6] ; MIT International Science and Technology Initiatives (MISTI) Funds ; Ministry of Science and Technology (MOST) of Taiwan[103-2119-M-001-010MY2] ; Ministry of Science and Technology (MOST) of Taiwan[105-2112-M-001-025-MY3] ; Ministry of Science and Technology (MOST) of Taiwan[105-2119-M-001-042] ; Ministry of Science and Technology (MOST) of Taiwan[1062112-M-001-011] ; Ministry of Science and Technology (MOST) of Taiwan[106-2119-M-001-013] ; Ministry of Science and Technology (MOST) of Taiwan[106-2119-M-001027] ; Ministry of Science and Technology (MOST) of Taiwan[106-2923-M-001-005] ; Ministry of Science and Technology (MOST) of Taiwan[107-2119-M-001-017] ; Ministry of Science and Technology (MOST) of Taiwan[107-2119M-001-020] ; Ministry of Science and Technology (MOST) of Taiwan[107-2119-M-001-041] ; The Ministry of Science and Technology (MOST) of Taiwan[107-2119-M-110-005] ; The Ministry of Science and Technology (MOST) of Taiwan[1072923-M-001-009] ; The Ministry of Science and Technology (MOST) of Taiwan[108-2112-M-001-048] ; The Ministry of Science and Technology (MOST) of Taiwan[108-2112-M-001051] ; The Ministry of Science and Technology (MOST) of Taiwan[108-2923-M-001-002] ; The Ministry of Science and Technology (MOST) of Taiwan[109-2112-M-001-025] ; The Ministry of Science and Technology (MOST) of Taiwan[109-2124M-001-005] ; The Ministry of Science and Technology (MOST) of Taiwan[109-2923-M-001-001] ; The Ministry of Science and Technology (MOST) of Taiwan[110-2112-M-003-007MY2] ; The Ministry of Science and Technology (MOST) of Taiwan[110-2112-M-001-033] ; The Ministry of Science and Technology (MOST) of Taiwan[110-2124-M-001-007] ; The Ministry of Science and Technology (MOST) of Taiwan[1102923-M-001-001] ; Ministry of Education (MoE) of Taiwan Yushan Young Scholar Program ; Physics Division, National Center for Theoretical Sciences of Taiwan ; National Aeronautics and Space Administration (NASA)[80NSSC20K1567] ; National Aeronautics and Space Administration (NASA)[80NSSC20K0527] ; National Aeronautics and Space Administration (NASA)[80NSSC20K0645] ; NASA Hubble Fellowship - Space Telescope Science Institute[HST-HF2-51431.001-A] ; NASA Hubble Fellowship - Space Telescope Science Institute[NAS5-26555] ; National Institute of Natural Sciences (NINS) of Japan ; National Key Research and Development Program of China[2016YFA0400704] ; National Key Research and Development Program of China[2017YFA0402703] ; National Key Research and Development Program of China[2016YFA0400702] ; National Key Research and Development Program of China[2017YFA0402700] ; NSF Astronomy and Astrophysics Postdoctoral Fellowship[AST1903847] ; Natural Science Foundation of China[11650110427] ; Natural Science Foundation of China[10625314] ; Natural Science Foundation of China[11721303] ; Natural Science Foundation of China[11725312] ; Natural Science Foundation of China[11873028] ; Natural Science Foundation of China[11933007] ; Natural Science Foundation of China[11991052] ; Natural Science Foundation of China[11991053] ; Natural Science Foundation of China[12192220] ; Natural Science Foundation of China[12192223] ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Youth Thousand Talents Program of China ; National Research Foundation of Korea (Global PhD Fellowship Grant)[NRF-2015H1A2A1033752] ; National Research Foundation of Korea (Korea Research Fellowship Program)[NRF-2015H1D3A1066561] ; National Research Foundation of Korea (Brain Pool Program)[2019H1D3A1A01102564] ; National Research Foundation of Korea (Basic Research Support Grant)[2019R1F1A1059721] ; National Research Foundation of Korea (Basic Research Support Grant)[2021R1A6A3A01086420] ; National Research Foundation of Korea (Basic Research Support Grant)[2022R1C1C1005255] ; Netherlands Research School for Astronomy (NOVA) Virtual Institute of Accretion (VIA) postdoctoral fellowships ; Swedish Research Council[2017-00648] ; Perimeter Institute for Theoretical Physics (Government of Canada through the Department of Innovation, Science and Economic Development) ; Perimeter Institute for Theoretical Physics (Province of Ontario through the Ministry of Research, Innovation and Science) ; Spanish Ministerio de Ciencia e Innovacion[PGC2018-098915-B-C21] ; Spanish Ministerio de Ciencia e Innovacion[AYA2016-80889-P] ; Spanish Ministerio de Ciencia e Innovacion[PID2019108995GB-C21] ; Spanish Ministerio de Ciencia e Innovacion[PID2020-117404GB-C21] ; University of Pretoria ; Shanghai Pilot Program for Basic Research, Chinese Academy of Science, Shanghai Branch[JCYJ-SHFY-2021-013] ; State Agency for Research of the Spanish MCIU through the Center of Excellence Severo Ochoa award[SEV-20170709] ; Spinoza Prize[SPI 78-409] ; South African Research Chairs Initiative, through the South African Radio Astronomy Observatory (SARAO)[77948] ; Toray Science Foundation ; Swedish Research Council (VR) ; US Department of Energy (USDOE) through the Los Alamos National Laboratory[89233218CNA000001] ; YCAA Prize Postdoctoral Fellowship ; Office of Science of the U.S. Department of Energy[DE-AC0500OR22725] ; Smithsonian Institution ; Science and Technologies Facility Council (UK) ; CNRS (Centre National de la Recherche Scientifique, France) ; MPG (Max-PlanckGesellschaft, Germany) ; IGN (Instituto Geografico Nacional, Spain) ; State of Arizona ; NSF ; National Science Foundation[OPP-1852617] ; National Science Foundation[OAC-1818253] ; Kavli Institute of Cosmological Physics at the University of Chicago ; NSF[ACI-1548562] ; NSF[DBI0735191] ; NSF[DBI-1265383] ; NSF[DBI-1743442] ; CyVerse ; National Science Foundation ; U.S. Department of Energy Office of Science ; Compute Ontario ; Calcul Quebec ; Compute Canada ; National Science Foundation (NSF)[AST-0096454] ; National Science Foundation (NSF)[AST-0352953] ; National Science Foundation (NSF)[AST0521233] ; National Science Foundation (NSF)[AST-0705062] ; National Science Foundation (NSF)[AST-0905844] ; National Science Foundation (NSF)[AST-0922984] ; National Science Foundation (NSF)[AST1126433] ; National Science Foundation (NSF)[AST-1140030] ; National Science Foundation (NSF)[DGE-1144085] ; National Science Foundation (NSF)[AST-1207704] ; National Science Foundation (NSF)[AST1207730] ; National Science Foundation (NSF)[AST-1207752] ; National Science Foundation (NSF)[MRI-1228509] ; The National Science Foundation (NSF)[OPP-1248097] ; The National Science Foundation (NSF)[AST1310896] ; The National Science Foundation (NSF)[AST-1440254] ; The National Science Foundation (NSF)[AST-1555365] ; The National Science Foundation (NSF)[AST-1614868] ; The National Science Foundation (NSF)[AST1615796] ; The National Science Foundation (NSF)[AST-1715061] ; The National Science Foundation (NSF)[AST-1716327] ; The National Science Foundation (NSF)[AST-1716536] ; The National Science Foundation (NSF)[OISE1743747] ; The National Science Foundation (NSF)[AST-1816420] ; The National Science Foundation (NSF)[AST-1935980] ; The National Science Foundation (NSF)[AST-2034306] ; Chandra[DD7-18089X] ; Chandra[TM6-17006X] ; International Max Planck Research School for Astronomy and Astrophysics at the University of Bonn ; Allegro ; University of Amsterdam ; Leiden University ; Radboud University
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000794024700001
资助机构Academia Sinica ; Academy of Finland[274477, 284495, 312496, 315721] ; Agencia Nacional de Investigacion y Desarrollo (ANID), Chile[NCN19_058] ; Fondecyt[1221421] ; Alexander von Humboldt Stiftung ; Alfred P. Sloan Research Fellowship ; European ALMA Regional Centre node in the Netherlands ; NL astronomy research network NOVA ; ALMA North America Development Fund ; Black Hole Initiative - John Templeton Foundation ; Gordon and Betty Moore Foundation ; China Scholarship Council ; China Postdoctoral Science Foundation fellowship[2020M671266] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[U0004246083, U0004-259839, F0003-272050, M0037-279006, F0003-281692, 104497, 275201, 263356] ; Consejeria de Economia, Conocimiento, Empresas y Universidad of the Junta de Andalucia[P18-FR-1769] ; Consejo Superior de Investigaciones Cientificas[2019AEP112] ; 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, IN112820] ; Dutch Organization for Scientific Research (NWO)[639.043.513, OCENW.KLEIN.113] ; Dutch National Supercomputers, Cartesius and Snellius (NWO)[2021.013] ; EACOA Fellowship - East Asia Core Observatories Association ; European Research Council (ERC)[610058] ; European Union[730562, 101018682] ; Generalitat Valenciana[APOSTD/2018/177] ; GenT Program[CIDEGENT/2018/021] ; MICINN[PID2019-108995GB-C22] ; European Research Council[884631] ; Institute for Advanced Study ; 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 Cologne ; DFG[FR 4069/2-1] ; Simons Foundation ; Japan Ministry of Education, Culture, Sports, Science and Technology (MEXT)[JPMXP1020200109] ; Japanese Government (Monbukagakusho: MEXT) Scholarship ; Japan Society for the Promotion of Science (JSPS)[JP17J08829] ; Joint Institute for Computational Fundamental Science, Japan ; 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-PlanckGesellschaft (MPG) ; Max Planck Partner Group of the MPG ; CAS ; MEXT/JSPS KAKENHI[18KK0090, JP21H01137, JP18H03721, JP18K13594, 18K03709, JP19K14761, 18H01245, 25120007] ; Malaysian Fundamental Research Grant Scheme (FRGS)[FRGS/1/2019/STG02/UM/02/6] ; MIT International Science and Technology Initiatives (MISTI) Funds ; Ministry of Science and Technology (MOST) of Taiwan[103-2119-M-001-010MY2, 105-2112-M-001-025-MY3, 105-2119-M-001-042, 1062112-M-001-011, 106-2119-M-001-013, 106-2119-M-001027, 106-2923-M-001-005, 107-2119-M-001-017, 107-2119M-001-020, 107-2119-M-001-041] ; The Ministry of Science and Technology (MOST) of Taiwan[107-2119-M-110-005, 1072923-M-001-009, 108-2112-M-001-048, 108-2112-M-001051, 108-2923-M-001-002, 109-2112-M-001-025, 109-2124M-001-005, 109-2923-M-001-001, 110-2112-M-003-007MY2, 110-2112-M-001-033, 110-2124-M-001-007, 1102923-M-001-001] ; Ministry of Education (MoE) of Taiwan Yushan Young Scholar Program ; Physics Division, National Center for Theoretical Sciences of Taiwan ; National Aeronautics and Space Administration (NASA)[80NSSC20K1567, 80NSSC20K0527, 80NSSC20K0645] ; NASA Hubble Fellowship - Space Telescope Science Institute[HST-HF2-51431.001-A, NAS5-26555] ; National Institute of Natural Sciences (NINS) of Japan ; National Key Research and Development Program of China[2016YFA0400704, 2017YFA0402703, 2016YFA0400702, 2017YFA0402700] ; NSF Astronomy and Astrophysics Postdoctoral Fellowship[AST1903847] ; Natural Science Foundation of China[11650110427, 10625314, 11721303, 11725312, 11873028, 11933007, 11991052, 11991053, 12192220, 12192223] ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Youth Thousand Talents Program of China ; National Research Foundation of Korea (Global PhD Fellowship Grant)[NRF-2015H1A2A1033752] ; National Research Foundation of Korea (Korea Research Fellowship Program)[NRF-2015H1D3A1066561] ; National Research Foundation of Korea (Brain Pool Program)[2019H1D3A1A01102564] ; National Research Foundation of Korea (Basic Research Support Grant)[2019R1F1A1059721, 2021R1A6A3A01086420, 2022R1C1C1005255] ; Netherlands Research School for Astronomy (NOVA) Virtual Institute of Accretion (VIA) postdoctoral fellowships ; Swedish Research Council[2017-00648] ; Perimeter Institute for Theoretical Physics (Government of Canada through the Department of Innovation, Science and Economic Development) ; Perimeter Institute for Theoretical Physics (Province of Ontario through the Ministry of Research, Innovation and Science) ; Spanish Ministerio de Ciencia e Innovacion[PGC2018-098915-B-C21, AYA2016-80889-P, PID2019108995GB-C21, PID2020-117404GB-C21] ; University of Pretoria ; Shanghai Pilot Program for Basic Research, Chinese Academy of Science, Shanghai Branch[JCYJ-SHFY-2021-013] ; State Agency for Research of the Spanish MCIU through the Center of Excellence Severo Ochoa award[SEV-20170709] ; Spinoza Prize[SPI 78-409] ; South African Research Chairs Initiative, through the South African Radio Astronomy Observatory (SARAO)[77948] ; Toray Science Foundation ; Swedish Research Council (VR) ; US Department of Energy (USDOE) through the Los Alamos National Laboratory[89233218CNA000001] ; YCAA Prize Postdoctoral Fellowship ; Office of Science of the U.S. Department of Energy[DE-AC0500OR22725] ; Smithsonian Institution ; Science and Technologies Facility Council (UK) ; CNRS (Centre National de la Recherche Scientifique, France) ; MPG (Max-PlanckGesellschaft, Germany) ; IGN (Instituto Geografico Nacional, Spain) ; State of Arizona ; NSF ; National Science Foundation[OPP-1852617, OAC-1818253] ; Kavli Institute of Cosmological Physics at the University of Chicago ; NSF[ACI-1548562, DBI0735191, DBI-1265383, DBI-1743442] ; CyVerse ; National Science Foundation ; U.S. Department of Energy Office of Science ; Compute Ontario ; Calcul Quebec ; Compute Canada ; National Science Foundation (NSF)[AST-0096454, AST-0352953, AST0521233, AST-0705062, AST-0905844, AST-0922984, AST1126433, AST-1140030, DGE-1144085, AST-1207704, AST1207730, AST-1207752, MRI-1228509] ; The National Science Foundation (NSF)[OPP-1248097, AST1310896, AST-1440254, AST-1555365, AST-1614868, AST1615796, AST-1715061, AST-1716327, AST-1716536, OISE1743747, AST-1816420, AST-1935980, AST-2034306] ; Chandra[DD7-18089X, TM6-17006X] ; International Max Planck Research School for Astronomy and Astrophysics at the University of Bonn ; Allegro ; University of Amsterdam ; Leiden University ; Radboud University
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/25203]  
专题星系类星体研究组
云南天文台_中国科学院天体结构与演化重点实验室
通讯作者Akiyama, Kazunori; Test, John
作者单位1.Dipartimento di Fisica
2.EACOA Fellow;
3.Joint Institute for VLBI ERIC (JIVE), Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands;
4.Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan;
5.Institute for Astrophysical Research, Boston University, 725 Commonwealth Ave., Boston, MA 02215, USA;
6.ASTRAVEO LLC, PO Box 1668, Gloucester, MA 01931, USA;
7.Massachusetts Institute of Technology Haystack Observatory, 99 Millstone Road, Westford, MA 01886, USA;
8.National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan;
9.Black Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USA;
10.Instituto de Astrofísica de Andalucía-CSIC, Glorieta de la Astronomía s/n, E-18008 Granada, Spain;
推荐引用方式
GB/T 7714		 Akiyama, Kazunori,Alberdi, Antxon,Alef, Walter,et al. First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way[J]. ASTROPHYSICAL JOURNAL LETTERS,2022,930(2).
APA Akiyama, Kazunori.,Alberdi, Antxon.,Alef, Walter.,Algaba, Juan Carlos.,Anantua, Richard.,...&Zeballos, Milagros.(2022).First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way.ASTROPHYSICAL JOURNAL LETTERS,930(2).
MLA Akiyama, Kazunori,et al."First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way".ASTROPHYSICAL JOURNAL LETTERS 930.2(2022).

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