中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

文献类型:期刊论文

作者Akiyama,Kazunori129,130,131,132; Alberdi,Antxon133; Alef,Walter134; Asada,Keiichi135; Azulay,Rebecca134,136,137; Baczko,Anne-Kathrin134; Ball,David138; Balokovi?,Mislav132,139; Barrett,John130; Bintley,Dan140
刊名The Astrophysical Journal Letters
出版日期2019-04-10
卷号875期号:1
ISSN号2041-8205
关键词accretion, accretion disks black hole physics galaxies: active galaxies: individual (M87) galaxies: jets gravitation
DOI10.3847/2041-8213/ab0ec7
英文摘要Abstract When surrounded by a transparent emission region, black holes are expected to reveal a dark shadow caused by gravitational light bending and photon capture at the event horizon. To image and study this phenomenon, we have assembled the Event Horizon Telescope, a global very long baseline interferometry array observing at a wavelength of 1.3 mm. This allows us to reconstruct event-horizon-scale images of the supermassive black hole candidate in the center of the giant elliptical galaxy M87. We have resolved the central compact radio source as an asymmetric bright emission ring with a diameter of 42?±?3 μas, which is circular and encompasses a central depression in brightness with a flux ratio ?10:1. The emission ring is recovered using different calibration and imaging schemes, with its diameter and width remaining stable over four different observations carried out in different days. Overall, the observed image is consistent with expectations for the shadow of a Kerr black hole as predicted by general relativity. The asymmetry in brightness in the ring can be explained in terms of relativistic beaming of the emission from a plasma rotating close to the speed of light around a black hole. We compare our images to an extensive library of ray-traced general-relativistic magnetohydrodynamic simulations of black holes and derive a central mass of M?=?(6.5?±?0.7)?×?109 M⊙. Our radio-wave observations thus provide powerful evidence for the presence of supermassive black holes in centers of galaxies and as the central engines of active galactic nuclei. They also present a new tool to explore gravity in its most extreme limit and on a mass scale that was so far not accessible.
语种英语
出版者The American Astronomical Society
WOS记录号IOP:2041-8205-875-1-AB0EC7
源URL[http://119.78.226.72/handle/331011/31825]  
专题中国科学院上海天文台
作者单位1.Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USA
2.Dept. of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA
3.Owens Valley Radio Observatory, California Institute of Technology, Big Pine, CA 93513, USA
4.Dept. of Astronomy, Radio Astronomy Laboratory, Univ. of California Berkeley, 601 Campbell, Berkeley, CA 94720, USA
5.Universidad de las Américas Puebla, Sta. Catarina Mártir S/N, San Andrés Cholula, Puebla, C.P. 72810, Mexico
6.Deceased.
7.National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801, USA
8.Joint ALMA Observatory, Alonso de Córdova 3107, Vitacura 763-0355, Santiago de Chile, Chile
9.Department of Physics, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
10.Physikalisches Institut der Universit?t zu K?ln, Zülpicher Str. 77, D-50937 K?ln, Germany
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Akiyama,Kazunori,Alberdi,Antxon,Alef,Walter,et al. First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole[J]. The Astrophysical Journal Letters,2019,875(1).
APA Akiyama,Kazunori.,Alberdi,Antxon.,Alef,Walter.,Asada,Keiichi.,Azulay,Rebecca.,...&Ziurys,Lucy.(2019).First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole.The Astrophysical Journal Letters,875(1).
MLA Akiyama,Kazunori,et al."First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole".The Astrophysical Journal Letters 875.1(2019).

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