The Photon Ring in M87*

Avery E. Broderick*, Dominic W. Pesce, Roman Gold, Paul Tiede, Hung Yi Pu, Richard Anantua, Silke Britzen, Chiara Ceccobello, Koushik Chatterjee, Yongjun Chen, Nicholas S. Conroy, Geoffrey B. Crew, Alejandro Cruz-Osorio, Yuzhu Cui, Sheperd S. Doeleman, Razieh Emami, Joseph Farah, Christian M. Fromm, Peter Galison, Boris GeorgievLuis C. Ho, David J. James, Britton Jeter, Alejandra Jimenez-Rosales, Jun Yi Koay, Carsten Kramer, Thomas P. Krichbaum, Sang Sung Lee, Michael Lindqvist, Iván Martí-Vidal, Karl M. Menten, Yosuke Mizuno, James M. Moran, Monika Moscibrodzka, Antonios Nathanail, Joey Neilsen, Chunchong Ni, Jongho Park, Vincent Piétu, Luciano Rezzolla, Angelo Ricarte, Bart Ripperda, Lijing Shao, Fumie Tazaki, Kenji Toma, Pablo Torne, Jonathan Weintroub, Maciek Wielgus, Feng Yuan, Shan Shan Zhao, Shuo Zhang

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

29 引文 斯高帕斯(Scopus)

摘要

We report measurements of the gravitationally lensed secondary image—the first in an infinite series of so-called “photon rings”—around the supermassive black hole M87* via simultaneous modeling and imaging of the 2017 Event Horizon Telescope (EHT) observations. The inferred ring size remains constant across the seven days of the 2017 EHT observing campaign and is consistent with theoretical expectations, providing clear evidence that such measurements probe spacetime and a striking confirmation of the models underlying the first set of EHT results. The residual diffuse emission evolves on timescales comparable to one week. We are able to detect with high significance a southwestern extension consistent with that expected from the base of a jet that is rapidly rotating in the clockwise direction. This result adds further support to the identification of the jet in M87* with a black hole spin-driven outflow, launched via the Blandford-Znajek process. We present three revised estimates for the mass of M87* based on identifying the modeled thin ring component with the bright ringlike features seen in simulated images, one of which is only weakly sensitive to the astrophysics of the emission region. All three estimates agree with each other and previously reported values. Our strongest mass constraint combines information from both the ring and the diffuse emission region, which together imply a mass-to-distance ratio of 4.20 − 0.06 + 0.12 μ as and a corresponding black hole mass of (7.13 ± 0.39) × 109 M , where the error on the latter is now dominated by the systematic uncertainty arising from the uncertain distance to M87*.

原文英語
文章編號61
期刊Astrophysical Journal
935
發行號1
DOIs
出版狀態已發佈 - 2022 8月 1

ASJC Scopus subject areas

  • 天文和天體物理學
  • 空間與行星科學

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