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First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole. / Event Horizon Telescope Collaborat ; Эрштадт, Светлана Георгиевна.

в: Astrophysical Journal Letters, Том 875, № 1, L6, 10.04.2019.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

Event Horizon Telescope Collaborat & Эрштадт, СГ 2019, 'First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole', Astrophysical Journal Letters, Том. 875, № 1, L6. https://doi.org/10.3847/2041-8213/ab1141

APA

Event Horizon Telescope Collaborat, & Эрштадт, С. Г. (2019). First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole. Astrophysical Journal Letters, 875(1), [L6]. https://doi.org/10.3847/2041-8213/ab1141

Vancouver

Event Horizon Telescope Collaborat, Эрштадт СГ. First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole. Astrophysical Journal Letters. 2019 Апр. 10;875(1). L6. https://doi.org/10.3847/2041-8213/ab1141

Author

Event Horizon Telescope Collaborat ; Эрштадт, Светлана Георгиевна. / First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole. в: Astrophysical Journal Letters. 2019 ; Том 875, № 1.

BibTeX

@article{f25b967d178b4c7b9fa724804e68983c,
title = "First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole",
abstract = "We present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign. We develop and fit geometric crescent models (asymmetric rings with interior brightness depressions) using two independent sampling algorithms that consider distinct representations of the visibility data. We show that the crescent family of models is statistically preferred over other comparably complex geometric models that we explore. We calibrate the geometric model parameters using general relativistic magnetohydrodynamic (GRMHD) models of the emission region and estimate physical properties of the source. We further fit images generated from GRMHD models directly to the data. We compare the derived emission region and black hole parameters from these analyses with those recovered from reconstructed images. There is a remarkable consistency among all methods and data sets. We find that >50% of the total flux at arcsecond scales comes from near the horizon, and that the emission is dramatically suppressed interior to this region by a factor >10, providing direct evidence of the predicted shadow of a black hole. Across all methods, we measure a crescent diameter of 42 ±3 μas and constrain its fractional width to be <0.5. Associating the crescent feature with the emission surrounding the black hole shadow, we infer an angular gravitational radius of GM/Dc 2 =3.8 ±0.4 μas. Folding in a distance measurement of gives a black hole mass of . This measurement from lensed emission near the event horizon is consistent with the presence of a central Kerr black hole, as predicted by the general theory of relativity. ",
keywords = "black hole physics, galaxies: individual (M87), gravitation, techniques: high angular resolution, techniques: interferometric, DIFFERENTIAL EVOLUTION, GENETIC ALGORITHM, ACCRETION DISKS, INNER JET, RADIO JET, NUCLEUS, GALAXY, DISTRIBUTIONS, EMISSION, DISTANCE",
author = "{Event Horizon Telescope Collaborat} and Kazunori Akiyama and Antxon Alberdi and Walter Alef and Keiichi Asada and Rebecca Azulay and Anne-Kathrin Baczko and David Ball and Mislav Balokovic and John Barrett and Dan Bintley and Lindy Blackburn and Wilfred Boland and Bouman, {Katherine L.} and Bower, {Geoffrey C.} and Michael Bremer and Brinkerink, {Christiaan D.} and Roger Brissenden and Silke Britzen and Broderick, {Avery E.} and Dominique Broguiere and Thomas Bronzwaer and Do-Young Byun and Carlstrom, {John E.} and Andrew Chael and Chi-Kwan Chan and Shami Chatterjee and Koushik Chatterjee and Ming-Tang Chen and Yongjun Chen and Ilje Cho and Pierre Christian and Conway, {John E.} and Cordes, {James M.} and Crew, {Geoffrey B.} and Yuzhu Cui and Jordy Davelaar and {De Laurentis}, Mariafelicia and Roger Deane and Jessica Dempsey and Gregory Desvignes and Jason Dexter and Doeleman, {Sheperd S.} and Eatough, {Ralph P.} and Heino Falcke and Fish, {Vincent L.} and Ed Fomalont and Raquel Fraga-Encinas and Per Friberg and Fromm, {Christian M.} and Gomez, {Jose L.} and Эрштадт, {Светлана Георгиевна}",
note = "Funding Information: The Event Horizon Telescope Collaboration Kazunori Akiyama Antxon Alberdi Walter Alef Keiichi Asada Rebecca Azulay Anne-Kathrin Baczko David Ball Mislav Balokovi{\'c} John Barrett Dan Bintley Lindy Blackburn Wilfred Boland Katherine L. Bouman Geoffrey C. Bower Michael Bremer Christiaan D. Brinkerink Roger Brissenden Silke Britzen Avery E. Broderick Dominique Broguiere Thomas Bronzwaer Do-Young Byun John E. Carlstrom Andrew Chael Chi-kwan Chan Shami Chatterjee Koushik Chatterjee Ming-Tang Chen Yongjun Chen Ilje Cho Pierre Christian John E. Conway James M. Cordes Geoffrey B. Crew Yuzhu Cui Jordy Davelaar Mariafelicia De Laurentis Roger Deane Jessica Dempsey Gregory Desvignes Jason Dexter Sheperd S. Doeleman Ralph P. Eatough Heino Falcke Vincent L. Fish Ed Fomalont Raquel Fraga-Encinas Per Friberg Christian M. Fromm Jos� L. G�mez Peter Galison Charles F. Gammie Roberto Garc�a Olivier Gentaz Boris Georgiev Ciriaco Goddi Roman Gold Minfeng Gu Mark Gurwell Kazuhiro Hada Michael H. Hecht Ronald Hesper Luis C. Ho Paul Ho Mareki Honma Chih-Wei L. Huang Lei Huang David H. Hughes Shiro Ikeda Makoto Inoue Sara Issaoun David J. James Buell T. Jannuzi Michael Janssen Britton Jeter Wu Jiang Michael D. Johnson Svetlana Jorstad Taehyun Jung Mansour Karami Ramesh Karuppusamy Tomohisa Kawashima Garrett K. Keating Mark Kettenis Jae-Young Kim Junhan Kim Jongsoo Kim Motoki Kino Jun Yi Koay Patrick M. Koch Shoko Koyama Michael Kramer Carsten Kramer Thomas P. Krichbaum Cheng-Yu Kuo Tod R. Lauer Sang-Sung Lee Yan-Rong Li Zhiyuan Li Michael Lindqvist Kuo Liu Elisabetta Liuzzo Wen-Ping Lo Andrei P. Lobanov Laurent Loinard Colin Lonsdale Ru-Sen Lu Nicholas R. MacDonald Jirong Mao Sera Markoff Daniel P. Marrone Alan P. Marscher Iv�n Mart�-Vidal Satoki Matsushita Lynn D. Matthews Lia Medeiros Karl M. Menten Yosuke Mizuno Izumi Mizuno James M. Moran Kotaro Moriyama Monika Moscibrodzka Cornelia M�ller Hiroshi Nagai Neil M. Nagar Masanori Nakamura Ramesh Narayan Gopal Narayanan Iniyan Natarajan Roberto Neri Chunchong Ni Aristeidis Noutsos Hiroki Okino H�ctor Olivares Tomoaki Oyama Feryal �zel Daniel C. M. Palumbo Nimesh Patel Ue-Li Pen Dominic W. Pesce Vincent Pi�tu Richard Plambeck Aleksandar PopStefanija Oliver Porth Ben Prather Jorge A. Preciado-L�pez Dimitrios Psaltis Hung-Yi Pu Venkatessh Ramakrishnan Ramprasad Rao Mark G. Rawlings Alexander W. Raymond Luciano Rezzolla Bart Ripperda Freek Roelofs Alan Rogers Eduardo Ros Mel Rose Arash Roshanineshat Helge Rottmann Alan L. Roy Chet Ruszczyk Benjamin R. Ryan Kazi L. J. Rygl Salvador S�nchez David S�nchez-Arguelles Mahito Sasada Tuomas Savolainen F. Peter Schloerb Karl-Friedrich Schuster Lijing Shao Zhiqiang Shen Des Small Bong Won Sohn Jason SooHoo Fumie Tazaki Paul Tiede Remo P. J. Tilanus Michael Titus Kenji Toma Pablo Torne Tyler Trent Sascha Trippe Shuichiro Tsuda Ilse van Bemmel Huib Jan van Langevelde Daniel R. van Rossum Jan Wagner John Wardle Jonathan Weintroub Norbert Wex Robert Wharton Maciek Wielgus George N. Wong Qingwen Wu Andr� Young Ken Young Ziri Younsi Feng Yuan Ye-Fei Yuan J. Anton Zensus Guangyao Zhao Shan-Shan Zhao Ziyan Zhu Joseph R. Farah Zheng Meyer-Zhao Daniel Michalik Andrew Nadolski Hiroaki Nishioka Nicolas Pradel Rurik A. Primiani Kamal Souccar Laura Vertatschitsch Paul Yamaguchi The Event Horizon Telescope Collaboration Kazunori Akiyama Antxon Alberdi Walter Alef Keiichi Asada Rebecca Azulay Anne-Kathrin Baczko David Ball Mislav Balokovi{\'c} John Barrett Dan Bintley Lindy Blackburn Wilfred Boland Katherine L. Bouman Geoffrey C. Bower Michael Bremer Christiaan D. Brinkerink Roger Brissenden Silke Britzen Avery E. Broderick Dominique Broguiere Thomas Bronzwaer Do-Young Byun John E. Carlstrom Andrew Chael Chi-kwan Chan Shami Chatterjee Koushik Chatterjee Ming-Tang Chen Yongjun Chen Ilje Cho Pierre Christian John E. Conway James M. Cordes Geoffrey B. Crew Yuzhu Cui Jordy Davelaar Mariafelicia De Laurentis Roger Deane Jessica Dempsey Gregory Desvignes Jason Dexter Sheperd S. Doeleman Ralph P. Eatough Heino Falcke Vincent L. Fish Ed Fomalont Raquel Fraga-Encinas Per Friberg Christian M. Fromm Jos� L. G�mez Peter Galison Charles F. Gammie Roberto Garc�a Olivier Gentaz Boris Georgiev Ciriaco Goddi Roman Gold Minfeng Gu Mark Gurwell Kazuhiro Hada Michael H. Hecht Ronald Hesper Luis C. Ho Paul Ho Mareki Honma Chih-Wei L. Huang Lei Huang David H. Hughes Shiro Ikeda Makoto Inoue Sara Issaoun David J. James Buell T. Jannuzi Michael Janssen Britton Jeter Wu Jiang Michael D. Johnson Svetlana Jorstad Taehyun Jung Mansour Karami Ramesh Karuppusamy Tomohisa Kawashima Garrett K. Keating Mark Kettenis Jae-Young Kim Junhan Kim Jongsoo Kim Motoki Kino Jun Yi Koay Patrick M. Koch Shoko Koyama Michael Kramer Carsten Kramer Thomas P. Krichbaum Cheng-Yu Kuo Tod R. Lauer Sang-Sung Lee Yan-Rong Li Zhiyuan Li Michael Lindqvist Kuo Liu Elisabetta Liuzzo Wen-Ping Lo Andrei P. Lobanov Laurent Loinard Colin Lonsdale Ru-Sen Lu Nicholas R. MacDonald Jirong Mao Sera Markoff Daniel P. Marrone Alan P. Marscher Iv�n Mart�-Vidal Satoki Matsushita Lynn D. Matthews Lia Medeiros Karl M. Menten Yosuke Mizuno Izumi Mizuno James M. Moran Kotaro Moriyama Monika Moscibrodzka Cornelia M�ller Hiroshi Nagai Neil M. Nagar Masanori Nakamura Ramesh Narayan Gopal Narayanan Iniyan Natarajan Roberto Neri Chunchong Ni Aristeidis Noutsos Hiroki Okino H�ctor Olivares Tomoaki Oyama Feryal �zel Daniel C. M. Palumbo Nimesh Patel Ue-Li Pen Dominic W. Pesce Vincent Pi�tu Richard Plambeck Aleksandar PopStefanija Oliver Porth Ben Prather Jorge A. Preciado-L�pez Dimitrios Psaltis Hung-Yi Pu Venkatessh Ramakrishnan Ramprasad Rao Mark G. Rawlings Alexander W. Raymond Luciano Rezzolla Bart Ripperda Freek Roelofs Alan Rogers Eduardo Ros Mel Rose Arash Roshanineshat Helge Rottmann Alan L. Roy Chet Ruszczyk Benjamin R. Ryan Kazi L. J. Rygl Salvador S�nchez David S�nchez-Arguelles Mahito Sasada Tuomas Savolainen F. Peter Schloerb Karl-Friedrich Schuster Lijing Shao Zhiqiang Shen Des Small Bong Won Sohn Jason SooHoo Fumie Tazaki Paul Tiede Remo P. J. Tilanus Michael Titus Kenji Toma Pablo Torne Tyler Trent Sascha Trippe Shuichiro Tsuda Ilse van Bemmel Huib Jan van Langevelde Daniel R. van Rossum Jan Wagner John Wardle Jonathan Weintroub Norbert Wex Robert Wharton Maciek Wielgus George N. Wong Qingwen Wu Andr� Young Ken Young Ziri Younsi Feng Yuan Ye-Fei Yuan J. Anton Zensus Guangyao Zhao Shan-Shan Zhao Ziyan Zhu Joseph R. Farah Zheng Meyer-Zhao Daniel Michalik Andrew Nadolski Hiroaki Nishioka Nicolas Pradel Rurik A. 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Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. yes We present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign. We develop and fit geometric crescent models (asymmetric rings with interior brightness depressions) using two independent sampling algorithms that consider distinct representations of the visibility data. We show that the crescent family of models is statistically preferred over other comparably complex geometric models that we explore. We calibrate the geometric model parameters using general relativistic magnetohydrodynamic (GRMHD) models of the emission region and estimate physical properties of the source. We further fit images generated from GRMHD models directly to the data. We compare the derived emission region and black hole parameters from these analyses with those recovered from reconstructed images. There is a remarkable consistency among all methods and data sets. We find that >50% of the total flux at arcsecond scales comes from near the horizon, and that the emission is dramatically suppressed interior to this region by a factor >10, providing direct evidence of the predicted shadow of a black hole. Across all methods, we measure a crescent diameter of 42���3 μ as and constrain its fractional width to be <0.5. Associating the crescent feature with the emission surrounding the black hole shadow, we infer an angular gravitational radius of GM / Dc 2 �=�3.8���0.4 μ as. Folding in a distance measurement of gives a black hole mass of . This measurement from lensed emission near the event horizon is consistent with the presence of a central Kerr black hole, as predicted by the general theory of relativity. � 2019. The American Astronomical Society. 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year = "2019",
month = apr,
day = "10",
doi = "10.3847/2041-8213/ab1141",
language = "Английский",
volume = "875",
journal = "Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing Ltd.",
number = "1",

}

RIS

TY - JOUR

T1 - First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole

AU - Event Horizon Telescope Collaborat

AU - Akiyama, Kazunori

AU - Alberdi, Antxon

AU - Alef, Walter

AU - Asada, Keiichi

AU - Azulay, Rebecca

AU - Baczko, Anne-Kathrin

AU - Ball, David

AU - Balokovic, Mislav

AU - Barrett, John

AU - Bintley, Dan

AU - Blackburn, Lindy

AU - Boland, Wilfred

AU - Bouman, Katherine L.

AU - Bower, Geoffrey C.

AU - Bremer, Michael

AU - Brinkerink, Christiaan D.

AU - Brissenden, Roger

AU - Britzen, Silke

AU - Broderick, Avery E.

AU - Broguiere, Dominique

AU - Bronzwaer, Thomas

AU - Byun, Do-Young

AU - Carlstrom, John E.

AU - Chael, Andrew

AU - Chan, Chi-Kwan

AU - Chatterjee, Shami

AU - Chatterjee, Koushik

AU - Chen, Ming-Tang

AU - Chen, Yongjun

AU - Cho, Ilje

AU - Christian, Pierre

AU - Conway, John E.

AU - Cordes, James M.

AU - Crew, Geoffrey B.

AU - Cui, Yuzhu

AU - Davelaar, Jordy

AU - De Laurentis, Mariafelicia

AU - Deane, Roger

AU - Dempsey, Jessica

AU - Desvignes, Gregory

AU - Dexter, Jason

AU - Doeleman, Sheperd S.

AU - Eatough, Ralph P.

AU - Falcke, Heino

AU - Fish, Vincent L.

AU - Fomalont, Ed

AU - Fraga-Encinas, Raquel

AU - Friberg, Per

AU - Fromm, Christian M.

AU - Gomez, Jose L.

AU - Эрштадт, Светлана Георгиевна

N1 - Funding Information: The Event Horizon Telescope Collaboration Kazunori Akiyama Antxon Alberdi Walter Alef Keiichi Asada Rebecca Azulay Anne-Kathrin Baczko David Ball Mislav Baloković John Barrett Dan Bintley Lindy Blackburn Wilfred Boland Katherine L. Bouman Geoffrey C. Bower Michael Bremer Christiaan D. Brinkerink Roger Brissenden Silke Britzen Avery E. Broderick Dominique Broguiere Thomas Bronzwaer Do-Young Byun John E. Carlstrom Andrew Chael Chi-kwan Chan Shami Chatterjee Koushik Chatterjee Ming-Tang Chen Yongjun Chen Ilje Cho Pierre Christian John E. Conway James M. Cordes Geoffrey B. Crew Yuzhu Cui Jordy Davelaar Mariafelicia De Laurentis Roger Deane Jessica Dempsey Gregory Desvignes Jason Dexter Sheperd S. Doeleman Ralph P. Eatough Heino Falcke Vincent L. Fish Ed Fomalont Raquel Fraga-Encinas Per Friberg Christian M. Fromm Jos� L. G�mez Peter Galison Charles F. Gammie Roberto Garc�a Olivier Gentaz Boris Georgiev Ciriaco Goddi Roman Gold Minfeng Gu Mark Gurwell Kazuhiro Hada Michael H. Hecht Ronald Hesper Luis C. Ho Paul Ho Mareki Honma Chih-Wei L. Huang Lei Huang David H. Hughes Shiro Ikeda Makoto Inoue Sara Issaoun David J. James Buell T. Jannuzi Michael Janssen Britton Jeter Wu Jiang Michael D. Johnson Svetlana Jorstad Taehyun Jung Mansour Karami Ramesh Karuppusamy Tomohisa Kawashima Garrett K. Keating Mark Kettenis Jae-Young Kim Junhan Kim Jongsoo Kim Motoki Kino Jun Yi Koay Patrick M. Koch Shoko Koyama Michael Kramer Carsten Kramer Thomas P. Krichbaum Cheng-Yu Kuo Tod R. Lauer Sang-Sung Lee Yan-Rong Li Zhiyuan Li Michael Lindqvist Kuo Liu Elisabetta Liuzzo Wen-Ping Lo Andrei P. Lobanov Laurent Loinard Colin Lonsdale Ru-Sen Lu Nicholas R. MacDonald Jirong Mao Sera Markoff Daniel P. Marrone Alan P. Marscher Iv�n Mart�-Vidal Satoki Matsushita Lynn D. Matthews Lia Medeiros Karl M. Menten Yosuke Mizuno Izumi Mizuno James M. Moran Kotaro Moriyama Monika Moscibrodzka Cornelia M�ller Hiroshi Nagai Neil M. Nagar Masanori Nakamura Ramesh Narayan Gopal Narayanan Iniyan Natarajan Roberto Neri Chunchong Ni Aristeidis Noutsos Hiroki Okino H�ctor Olivares Tomoaki Oyama Feryal �zel Daniel C. M. Palumbo Nimesh Patel Ue-Li Pen Dominic W. Pesce Vincent Pi�tu Richard Plambeck Aleksandar PopStefanija Oliver Porth Ben Prather Jorge A. Preciado-L�pez Dimitrios Psaltis Hung-Yi Pu Venkatessh Ramakrishnan Ramprasad Rao Mark G. Rawlings Alexander W. Raymond Luciano Rezzolla Bart Ripperda Freek Roelofs Alan Rogers Eduardo Ros Mel Rose Arash Roshanineshat Helge Rottmann Alan L. Roy Chet Ruszczyk Benjamin R. Ryan Kazi L. J. Rygl Salvador S�nchez David S�nchez-Arguelles Mahito Sasada Tuomas Savolainen F. Peter Schloerb Karl-Friedrich Schuster Lijing Shao Zhiqiang Shen Des Small Bong Won Sohn Jason SooHoo Fumie Tazaki Paul Tiede Remo P. J. Tilanus Michael Titus Kenji Toma Pablo Torne Tyler Trent Sascha Trippe Shuichiro Tsuda Ilse van Bemmel Huib Jan van Langevelde Daniel R. van Rossum Jan Wagner John Wardle Jonathan Weintroub Norbert Wex Robert Wharton Maciek Wielgus George N. Wong Qingwen Wu Andr� Young Ken Young Ziri Younsi Feng Yuan Ye-Fei Yuan J. Anton Zensus Guangyao Zhao Shan-Shan Zhao Ziyan Zhu Joseph R. Farah Zheng Meyer-Zhao Daniel Michalik Andrew Nadolski Hiroaki Nishioka Nicolas Pradel Rurik A. Primiani Kamal Souccar Laura Vertatschitsch Paul Yamaguchi The Event Horizon Telescope Collaboration Kazunori Akiyama Antxon Alberdi Walter Alef Keiichi Asada Rebecca Azulay Anne-Kathrin Baczko David Ball Mislav Baloković John Barrett Dan Bintley Lindy Blackburn Wilfred Boland Katherine L. Bouman Geoffrey C. Bower Michael Bremer Christiaan D. Brinkerink Roger Brissenden Silke Britzen Avery E. Broderick Dominique Broguiere Thomas Bronzwaer Do-Young Byun John E. Carlstrom Andrew Chael Chi-kwan Chan Shami Chatterjee Koushik Chatterjee Ming-Tang Chen Yongjun Chen Ilje Cho Pierre Christian John E. Conway James M. Cordes Geoffrey B. Crew Yuzhu Cui Jordy Davelaar Mariafelicia De Laurentis Roger Deane Jessica Dempsey Gregory Desvignes Jason Dexter Sheperd S. Doeleman Ralph P. Eatough Heino Falcke Vincent L. Fish Ed Fomalont Raquel Fraga-Encinas Per Friberg Christian M. Fromm Jos� L. G�mez Peter Galison Charles F. Gammie Roberto Garc�a Olivier Gentaz Boris Georgiev Ciriaco Goddi Roman Gold Minfeng Gu Mark Gurwell Kazuhiro Hada Michael H. Hecht Ronald Hesper Luis C. Ho Paul Ho Mareki Honma Chih-Wei L. Huang Lei Huang David H. Hughes Shiro Ikeda Makoto Inoue Sara Issaoun David J. James Buell T. Jannuzi Michael Janssen Britton Jeter Wu Jiang Michael D. Johnson Svetlana Jorstad Taehyun Jung Mansour Karami Ramesh Karuppusamy Tomohisa Kawashima Garrett K. Keating Mark Kettenis Jae-Young Kim Junhan Kim Jongsoo Kim Motoki Kino Jun Yi Koay Patrick M. Koch Shoko Koyama Michael Kramer Carsten Kramer Thomas P. Krichbaum Cheng-Yu Kuo Tod R. Lauer Sang-Sung Lee Yan-Rong Li Zhiyuan Li Michael Lindqvist Kuo Liu Elisabetta Liuzzo Wen-Ping Lo Andrei P. Lobanov Laurent Loinard Colin Lonsdale Ru-Sen Lu Nicholas R. MacDonald Jirong Mao Sera Markoff Daniel P. Marrone Alan P. Marscher Iv�n Mart�-Vidal Satoki Matsushita Lynn D. Matthews Lia Medeiros Karl M. Menten Yosuke Mizuno Izumi Mizuno James M. Moran Kotaro Moriyama Monika Moscibrodzka Cornelia M�ller Hiroshi Nagai Neil M. Nagar Masanori Nakamura Ramesh Narayan Gopal Narayanan Iniyan Natarajan Roberto Neri Chunchong Ni Aristeidis Noutsos Hiroki Okino H�ctor Olivares Tomoaki Oyama Feryal �zel Daniel C. M. Palumbo Nimesh Patel Ue-Li Pen Dominic W. Pesce Vincent Pi�tu Richard Plambeck Aleksandar PopStefanija Oliver Porth Ben Prather Jorge A. Preciado-L�pez Dimitrios Psaltis Hung-Yi Pu Venkatessh Ramakrishnan Ramprasad Rao Mark G. Rawlings Alexander W. 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Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. yes We present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign. We develop and fit geometric crescent models (asymmetric rings with interior brightness depressions) using two independent sampling algorithms that consider distinct representations of the visibility data. We show that the crescent family of models is statistically preferred over other comparably complex geometric models that we explore. We calibrate the geometric model parameters using general relativistic magnetohydrodynamic (GRMHD) models of the emission region and estimate physical properties of the source. We further fit images generated from GRMHD models directly to the data. We compare the derived emission region and black hole parameters from these analyses with those recovered from reconstructed images. There is a remarkable consistency among all methods and data sets. We find that >50% of the total flux at arcsecond scales comes from near the horizon, and that the emission is dramatically suppressed interior to this region by a factor >10, providing direct evidence of the predicted shadow of a black hole. Across all methods, we measure a crescent diameter of 42���3 μ as and constrain its fractional width to be <0.5. Associating the crescent feature with the emission surrounding the black hole shadow, we infer an angular gravitational radius of GM / Dc 2 �=�3.8���0.4 μ as. Folding in a distance measurement of gives a black hole mass of . This measurement from lensed emission near the event horizon is consistent with the presence of a central Kerr black hole, as predicted by the general theory of relativity. � 2019. The American Astronomical Society. 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PY - 2019/4/10

Y1 - 2019/4/10

N2 - We present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign. We develop and fit geometric crescent models (asymmetric rings with interior brightness depressions) using two independent sampling algorithms that consider distinct representations of the visibility data. We show that the crescent family of models is statistically preferred over other comparably complex geometric models that we explore. We calibrate the geometric model parameters using general relativistic magnetohydrodynamic (GRMHD) models of the emission region and estimate physical properties of the source. We further fit images generated from GRMHD models directly to the data. We compare the derived emission region and black hole parameters from these analyses with those recovered from reconstructed images. There is a remarkable consistency among all methods and data sets. We find that >50% of the total flux at arcsecond scales comes from near the horizon, and that the emission is dramatically suppressed interior to this region by a factor >10, providing direct evidence of the predicted shadow of a black hole. Across all methods, we measure a crescent diameter of 42 ±3 μas and constrain its fractional width to be <0.5. Associating the crescent feature with the emission surrounding the black hole shadow, we infer an angular gravitational radius of GM/Dc 2 =3.8 ±0.4 μas. Folding in a distance measurement of gives a black hole mass of . This measurement from lensed emission near the event horizon is consistent with the presence of a central Kerr black hole, as predicted by the general theory of relativity.

AB - We present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign. We develop and fit geometric crescent models (asymmetric rings with interior brightness depressions) using two independent sampling algorithms that consider distinct representations of the visibility data. We show that the crescent family of models is statistically preferred over other comparably complex geometric models that we explore. We calibrate the geometric model parameters using general relativistic magnetohydrodynamic (GRMHD) models of the emission region and estimate physical properties of the source. We further fit images generated from GRMHD models directly to the data. We compare the derived emission region and black hole parameters from these analyses with those recovered from reconstructed images. There is a remarkable consistency among all methods and data sets. We find that >50% of the total flux at arcsecond scales comes from near the horizon, and that the emission is dramatically suppressed interior to this region by a factor >10, providing direct evidence of the predicted shadow of a black hole. Across all methods, we measure a crescent diameter of 42 ±3 μas and constrain its fractional width to be <0.5. Associating the crescent feature with the emission surrounding the black hole shadow, we infer an angular gravitational radius of GM/Dc 2 =3.8 ±0.4 μas. Folding in a distance measurement of gives a black hole mass of . This measurement from lensed emission near the event horizon is consistent with the presence of a central Kerr black hole, as predicted by the general theory of relativity.

KW - black hole physics

KW - galaxies: individual (M87)

KW - gravitation

KW - techniques: high angular resolution

KW - techniques: interferometric

KW - DIFFERENTIAL EVOLUTION

KW - GENETIC ALGORITHM

KW - ACCRETION DISKS

KW - INNER JET

KW - RADIO JET

KW - NUCLEUS

KW - GALAXY

KW - DISTRIBUTIONS

KW - EMISSION

KW - DISTANCE

UR - http://www.scopus.com/inward/record.url?scp=85064706726&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/first-m87-event-horizon-telescope-results-vi-shadow-mass-central-black-hole

U2 - 10.3847/2041-8213/ab1141

DO - 10.3847/2041-8213/ab1141

M3 - статья

VL - 875

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

SN - 2041-8205

IS - 1

M1 - L6

ER -

ID: 41190667