A ring-like accretion structure in M87 connecting its black hole and jet.
A ring-like accretion structure in M87 connecting its black hole and jet.
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DOI：
10.1038/s41586-023-05843-w
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发表时间：
2023-04
期刊：
影响因子：
64.8
通讯作者：
Yu, Chen-Yu
中科院分区：
文献类型：
--
作者：
Lu, Ru-Sen;Asada, Keiichi;Krichbaum, Thomas P.;Park, Jongho;Tazaki, Fumie;Pu, Hung-Yi;Nakamura, Masanori;Lobanov, Andrei;Hada, Kazuhiro;Akiyama, Kazunori;Kim, Jae-Young;Marti-Vidal, Ivan;Gomez, Jose L.;Kawashima, Tomohisa;Yuan, Feng;Ros, Eduardo;Alef, Walter;Britzen, Silke;Bremer, Michael;Broderick, Avery E.;Doi, Akihiro;Giovannini, Gabriele;Giroletti, Marcello;Ho, Paul T. P.;Honma, Mareki;Hughes, David H.;Inoue, Makoto;Jiang, Wu;Kino, Motoki;Koyama, Shoko;Lindqvist, Michael;Liu, Jun;Marscher, Alan P.;Matsushita, Satoki;Nagai, Hiroshi;Rottmann, Helge;Savolainen, Tuomas;Schuster, Karl-Friedrich;Shen, Zhi-Qiang;de Vicente, Pablo;Walker, R. Craig;Yang, Hai;Zensus, J. Anton;Algaba, Juan Carlos;Allardi, Alexander;Bach, Uwe;Berthold, Ryan;Bintley, Dan;Byun, Do-Young;Casadio, Carolina;Chang, Shu-Hao;Chang, Chih-Cheng;Chang, Song-Chu;Chen, Chung-Chen;Chen, Ming-Tang;Chilson, Ryan;Chuter, Tim C.;Conway, John;Crew, Geoffrey B.;Dempsey, Jessica T.;Dornbusch, Sven;Faber, Aaron;Friberg, Per;Garcia, Javier Gonzalez;Garrido, Miguel Gomez;Han, Chih-Chiang;Han, Kuo-Chang;Hasegawa, Yutaka;Herrero-Illana, Ruben;Huang, Yau-De;Huang, Chih-Wei L.;Impellizzeri, Violette;Jiang, Homin;Jinchi, Hao;Jung, Taehyun;Kallunki, Juha;Kirves, Petri;Kimura, Kimihiro;Koay, Jun Yi;Koch, Patrick M.;Kramer, Carsten;Kraus, Alex;Kubo, Derek;Kuo, Cheng-Yu;Li, Chao-Te;Lin, Lupin Chun-Che;Liu, Ching-Tang;Liu, Kuan-Yu;Lo, Wen-Ping;Lu, Li-Ming;MacDonald, Nicholas;Martin-Cocher, Pierre;Messias, Hugo;Meyer-Zhao, Zheng;Minter, Anthony;Nair, Dhanya G.;Nishioka, Hiroaki;Norton, Timothy J.;Nystrom, George;Ogawa, Hideo;Oshiro, Peter;Patel, Nimesh A.;Pen, Ue-Li;Pidopryhora, Yurii;Pradel, Nicolas;Raffin, Philippe A.;Rao, Ramprasad;Ruiz, Ignacio;Sanchez, Salvador;Shaw, Paul;Snow, William;Sridharan, T. K.;Srinivasan, Ranjani;Tercero, Belen;Torne, Pablo;Traianou, Efthalia;Wagner, Jan;Walther, Craig;Wei, Ta-Shun;Yang, Jun;Yu, Chen-Yu
附近的射电星系 M87 是研究黑洞吸积和喷流形成的主要目标。 2017 年事件视界望远镜在 1.3mm 波长下对 M87 的观测揭示了一个环状结构，这被解释为中心黑洞周围的引力透镜发射。在这里，我们报告了 2018 年获得的 M87 图像，波长为 3.5mm，表明紧凑型无线电核心具有空间分辨率。高分辨率成像显示直径为史瓦西半径的环形结构，比 1.3 毫米处的直径大约 50%。 3.5毫米处的外缘也比1.3毫米处的外缘大。这个更大更厚的环表明，除了引力透镜环状发射之外，具有吸收效应的吸积流也做出了重大贡献。图像显示边缘增亮的喷流与黑洞的吸积流相连。靠近黑洞，喷射发射区域的发射剖面比黑洞驱动喷射的预期剖面更宽，这表明可能存在与吸积流相关的风。 2018 年在 3.5 毫米波长下获得的 M87 空间分辨图像显示出环状吸积结构，其内（外）边缘连接黑洞（喷流）。
The nearby radio galaxy M87 is a prime target for studying black hole accretion and jet formation. Event Horizon Telescope observations of M87 in 2017, at a wavelength of 1.3 mm, revealed a ring-like structure, which was interpreted as gravitationally lensed emission around a central black hole. Here we report images of M87 obtained in 2018, at a wavelength of 3.5 mm, showing that the compact radio core is spatially resolved. High-resolution imaging shows a ring-like structure of Schwarzschild radii in diameter, approximately 50% larger than that seen at 1.3 mm. The outer edge at 3.5 mm is also larger than that at 1.3 mm. This larger and thicker ring indicates a substantial contribution from the accretion flow with absorption effects, in addition to the gravitationally lensed ring-like emission. The images show that the edge-brightened jet connects to the accretion flow of the black hole. Close to the black hole, the emission profile of the jet-launching region is wider than the expected profile of a black-hole-driven jet, suggesting the possible presence of a wind associated with the accretion flow. Spatially resolved images of M87 obtained at a wavelength of 3.5 mm in 2018 show a ring-like accretion structure, the inner (outer) edge of which connects the black hole (jet).
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