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In 2017 April, the Event Horizon Telescope (EHT) observed the near-horizon region around the supermassive black hole at the core of the M87 galaxy. These 1.3 mm wavelength observations revealed a compact asymmetric ring-like source…

High Energy Astrophysical Phenomena · Physics 2021-05-05 The Event Horizon Telescope Collaboration

The Event Horizon Telescope (EHT) has recently delivered the first resolved images of M87*, the supermassive black hole in the center of the M87 galaxy. These images were produced using 230 GHz observations performed in 2017 April.…

Event Horizon Telescope (EHT) observations have revealed a bright ring of emission around the supermassive black hole at the center of the M87 galaxy. EHT images in linear polarization have further identified a coherent spiral pattern…

High Energy Astrophysical Phenomena · Physics 2023-11-21 The Event Horizon Telescope Collaboration

Event Horizon Telescope (EHT) observations at 230 GHz have now imaged polarized emission around the supermassive black hole in M87 on event-horizon scales. This polarized synchrotron radiation probes the structure of magnetic fields and the…

High Energy Astrophysical Phenomena · Physics 2021-05-06 The Event Horizon Telescope Collaboration

The polarized images of the supermassive black hole Messier 87* (M87*) produced by the Event Horizon Telescope (EHT) provide a direct view of the near-horizon emission from a black hole accretion and jet system. The EHT theoretical analysis…

High Energy Astrophysical Phenomena · Physics 2024-07-16 Daniel C. M. Palumbo , Michi Baubock , Charles F. Gammie

We present the calibration and reduction of Event Horizon Telescope (EHT) 1.3mm radio wavelength observations of the supermassive black hole candidate at the center of the radio galaxy M87 and the quasar 3C 279, taken during the 2017 April…

Astrophysics of Galaxies · Physics 2019-07-08 The Event Horizon Telescope Collaboration

We present the first Event Horizon Telescope (EHT) images of M87, using observations from April 2017 at 1.3 mm wavelength. These images show a prominent ring with a diameter of ~40 micro-as, consistent with the size and shape of the lensed…

Astrophysics of Galaxies · Physics 2019-07-08 The Event Horizon Telescope Collaboration

The first image of the black hole (BH) M87* obtained by the Event Horizon Telescope (EHT) has the shape of a crescent extending from the E to WSW position angles, with a tentative 'ESE hotspot'. Assuming that the BH spin vector is aligned…

High Energy Astrophysical Phenomena · Physics 2021-11-16 Krzysztof Nalewajko

Event Horizon Telescope (EHT) images of the supermassive black hole M87* depict an asymmetric ring of emission. General relativistic magnetohydrodynamic (GRMHD) models of M87* and its accretion disk predict that the amplitude and location…

High Energy Astrophysical Phenomena · Physics 2026-04-03 Vadim Bernshteyn , Nicholas S. Conroy , Michi Bauböck , Paul Tiede , Abhishek V. Joshi , Ben S. Prather , Charles F. Gammie , the Event Horizon Telescope Collaboration , : , Kazunori Akiyama , Ezequiel Albentosa-Ruíz , Antxon Alberdi , Walter Alef , Juan Carlos Algaba , Richard Anantua , Keiichi Asada , Rebecca Azulay , Anne-Kathrin Baczko , David Ball , Bidisha Bandyopadhyay , John Barrett , Bradford A. Benson , Dan Bintley , Lindy Blackburn , Raymond Blundell , Katherine L. Bouman , Geoffrey C. Bower , Michael Bremer , Roger Brissenden , Silke Britzen , Avery E. Broderick , Dominique Broguiere , Thomas Bronzwaer , Sandra Bustamante , Douglas F. Carlos , John E. Carlstrom , Andrew Chael , Chi-kwan Chan , Dominic O. Chang , Koushik Chatterjee , Ming-Tang Chen , Yongjun Chen , Xiaopeng Cheng , Paul Chichura , Ilje Cho , John E. Conway , Thomas M. Crawford , Geoffrey B. Crew , Alejandro Cruz-Osorio , Yuzhu Cui , Brandon Curd , Rohan Dahale , Jordy Davelaar , Mariafelicia De Laurentis , Roger Deane , Jason Dexter , Vedant Dhruv , Indu K. Dihingia , Sheperd S. Doeleman , Sergio A. Dzib , Razieh Emami , Heino Falcke , Joseph Farah , Vincent L. Fish , Edward Fomalont , H. Alyson Ford , Marianna Foschi , Raquel Fraga-Encinas , William T. Freeman , Per Friberg , Christian M. Fromm , Antonio Fuentes , Peter Galison , Roberto García , Olivier Gentaz , Boris Georgiev , Ciriaco Goddi , Roman Gold , Arturo I. Gómez-Ruiz , José L. Gómez , Minfeng Gu , Mark Gurwell , Kazuhiro Hada , Daryl Haggard , Ronald Hesper , Dirk Heumann , Luis C. Ho , Paul Ho , Mareki Honma , Chih-Wei L. Huang , Lei Huang , David H. Hughes , Shiro Ikeda , C. M. Violette Impellizzeri , Makoto Inoue , Sara Issaoun , David J. James , Buell T. Jannuzi , Michael Janssen , Britton Jeter , Wu Jiang , Alejandra Jiménez-Rosales , Michael D. Johnson , Svetlana Jorstad , Adam C. Jones , Taehyun Jung , Tomohisa Kawashima , Garrett K. Keating , Mark Kettenis , Dong-Jin Kim , Jae-Young Kim , Jongsoo Kim , Junhan Kim , Motoki Kino , Jun Yi Koay , Prashant Kocherlakota , Yutaro Kofuji , Patrick M. Koch , Shoko Koyama , Carsten Kramer , Joana A. Kramer , Michael Kramer , Thomas P. Krichbaum , Cheng-Yu Kuo , Noemi La Bella , Deokhyeong Lee , Sang-Sung Lee , Aviad Levis , Shaoliang Li , Zhiyuan Li , Rocco Lico , Greg Lindahl , Michael Lindqvist , Mikhail Lisakov , Jun Liu , Kuo Liu , Elisabetta Liuzzo , Wen-Ping Lo , Andrei P. Lobanov , Laurent Loinard , Colin J. Lonsdale , Amy E. Lowitz , Ru-Sen Lu , Nicholas R. MacDonald , Jirong Mao , Nicola Marchili , Sera Markoff , Daniel P. Marrone , Alan P. Marscher , Iván Martí-Vidal , Satoki Matsushita , Lynn D. Matthews , Lia Medeiros , Karl M. Menten , Hugo Messias , Izumi Mizuno , Yosuke Mizuno , Joshua Montgomery , Kotaro Moriyama , Monika Moscibrodzka , Wanga Mulaudzi , Cornelia Müller , Hendrik Müller , Alejandro Mus , Gibwa Musoke , Ioannis Myserlis , Hiroshi Nagai , Neil M. Nagar , Dhanya G. Nair , Masanori Nakamura , Gopal Narayanan , Iniyan Natarajan , Antonios Nathanail , Santiago Navarro Fuentes , Joey Neilsen , Chunchong Ni , Michael A. Nowak , Hiroki Okino , Héctor Raúl Olivares Sánchez , Feryal Özel , Daniel C. M. Palumbo , Georgios Filippos Paraschos , Jongho Park , Harriet Parsons , Nimesh Patel , Ue-Li Pen , Dominic W. Pesce , Vincent Piétu , Alexander Plavin , Aleksandar PopStefanija , Oliver Porth , Giacomo Principe , Dimitrios Psaltis , Hung-Yi Pu , Alexandra Rahlin , Venkatessh Ramakrishnan , Ramprasad Rao , Mark G. Rawlings , Luciano Rezzolla , Angelo Ricarte , Luca Ricci , Bart Ripperda , Jan Röder , Freek Roelofs , Cristina Romero-Cañizales , Eduardo Ros , Arash Roshanineshat , Helge Rottmann , Alan L. Roy , Ignacio Ruiz , Chet Ruszczyk , Kazi L. J. Rygl , León D. S. Salas , Salvador Sánchez , David Sánchez-Argüelles , Miguel Sánchez-Portal , Mahito Sasada , Kaushik Satapathy , Saurabh , Tuomas Savolainen , Karl-Friedrich Schuster , Zhiqiang Shen , Sasikumar Silpa , Randall Smith , Bong Won Sohn , Jason SooHoo , Kamal Souccar , Joshua S. Stanway , He Sun , Alexandra J. Tetarenko , Remo P. J. Tilanus , Michael Titus , Kenji Toma , Pablo Torne , Teresa Toscano , Efthalia Traianou , Sascha Trippe , Matthew Turk , Ilse van Bemmel , Huib Jan van Langevelde , Daniel R. van Rossum , Sebastiano D. von Fellenberg , Jesse Vos , Jan Wagner , Derek Ward-Thompson , John Wardle , Jasmin E. Washington , Jonathan Weintroub , Maciek Wielgus , Kaj Wiik , Michael F. Wondrak , George N. Wong , Jompoj Wongphexhauxsorn , Qingwen Wu , Paul Yamaguchi , Aristomenis Yfantis , Doosoo Yoon , André Young , Ziri Younsi , Wei Yu , Feng Yuan , Ye-Fei Yuan , Ai-Ling Zeng , J. Anton Zensus , Shuo Zhang , Guang-Yao Zhao

The Event Horizon Telescope (EHT) recently released the first linearly polarized images of the accretion flow around the supermassive black hole Messier 87*, hereafter \m{}. The spiraling polarization pattern found in EHT images favored…

High Energy Astrophysical Phenomena · Physics 2022-04-20 Daniel C. M. Palumbo , George N. Wong

The Event Horizon Telescope (EHT) has mapped the central compact radio source of the elliptical galaxy M87 at 1.3 mm with unprecedented angular resolution. Here we consider the physical implications of the asymmetric ring seen in the 2017…

Astrophysics of Galaxies · Physics 2019-07-08 The Event Horizon Telescope Collaboration

We investigate the presence and spatial characteristics of the jet base emission in M87* at 230 GHz, enabled by the enhanced uv coverage in the 2021 Event Horizon Telescope (EHT) observations. The addition of the 12-m Kitt Peak Telescope…

High Energy Astrophysical Phenomena · Physics 2026-01-29 Saurabh , Hendrik Müller , Sebastiano D. von Fellenberg , Paul Tiede , Michael Janssen , Lindy Blackburn , Avery E. Broderick , Erandi Chavez , Boris Georgiev , Thomas P. Krichbaum , Kotaro Moriyama , Dhanya G. Nair , Iniyan Natarajan , Jongho Park , Andrew Thomas West , Maciek Wielgus , Kazunori Akiyama , Ezequiel Albentosa-Ruíz , Antxon Alberdi , Walter Alef , Juan Carlos Algaba , Richard Anantua , Keiichi Asada , Rebecca Azulay , Uwe Bach , Anne-Kathrin Baczko , David Ball , Mislav Baloković , Bidisha Bandyopadhyay , John Barrett , Michi Bauböck , Bradford A. Benson , Dan Bintley , Raymond Blundell , Katherine L. Bouman , Geoffrey C. Bower , Michael Bremer , Roger Brissenden , Silke Britzen , Dominique Broguiere , Thomas Bronzwaer , Sandra Bustamante , Douglas F. Carlos , John E. Carlstrom , Andrew Chael , Chi-kwan Chan , Dominic O. Chang , Koushik Chatterjee , Shami Chatterjee , Ming-Tang Chen , Yongjun Chen , Xiaopeng Cheng , Paul Chichura , Ilje Cho , Pierre Christian , Nicholas S. Conroy , John E. Conway , Thomas M. Crawford , Geoffrey B. Crew , Alejandro Cruz-Osorio , Yuzhu Cui , Brandon Curd , Rohan Dahale , Jordy Davelaar , Mariafelicia De Laurentis , Roger Deane , Gregory Desvignes , Jason Dexter , Vedant Dhruv , Indu K. Dihingia , Sheperd S. Doeleman , Sergio A. Dzib , Ralph P. Eatough , Razieh Emami , Heino Falcke , Joseph Farah , Vincent L. Fish , Edward Fomalont , H. Alyson Ford , Marianna Foschi , Raquel Fraga-Encinas , William T. Freeman , Per Friberg , Christian M. Fromm , Antonio Fuentes , Peter Galison , Charles F. Gammie , Roberto García , Olivier Gentaz , Ciriaco Goddi , Roman Gold , Arturo I. Gómez-Ruiz , José L. Gómez , Minfeng Gu , Mark Gurwell , Kazuhiro Hada , Daryl Haggard , Ronald Hesper , Dirk Heumann , Luis C. Ho , Paul Ho , Mareki Honma , Chih-Wei L. Huang , Lei Huang , David H. Hughes , Shiro Ikeda , C. M. Violette Impellizzeri , Makoto Inoue , Sara Issaoun , David J. James , Buell T. Jannuzi , Britton Jeter , Wu Jiang , Alejandra Jiménez-Rosales , Michael D. Johnson , Svetlana Jorstad , Adam C. Jones , Abhishek V. Joshi , Taehyun Jung , Ramesh Karuppusamy , Tomohisa Kawashima , Garrett K. Keating , Mark Kettenis , Dong-Jin Kim , Jae-Young Kim , Jongsoo Kim , Junhan Kim , Motoki Kino , Jun Yi Koay , Prashant Kocherlakota , Yutaro Kofuji , Patrick M. Koch , Shoko Koyama , Carsten Kramer , Joana A. Kramer , Michael Kramer , Cheng-Yu Kuo , Noemi La Bella , Deokhyeong Lee , Sang-Sung Lee , Aviad Levis , Shaoliang Li , Zhiyuan Li , Rocco Lico , Greg Lindahl , Michael Lindqvist , Mikhail Lisakov , Jun Liu , Kuo Liu , Elisabetta Liuzzo , Wen-Ping Lo , Andrei P. Lobanov , Laurent Loinard , Colin J. Lonsdale , Amy E. Lowitz , Ru-Sen Lu , Nicholas R. MacDonald , Jirong Mao , Nicola Marchili , Sera Markoff , Daniel P. Marrone , Alan P. Marscher , Iván Martí-Vidal , Satoki Matsushita , Lynn D. Matthews , Lia Medeiros , Karl M. Menten , Hugo Messias , Izumi Mizuno , Yosuke Mizuno , Joshua Montgomery , James M. Moran , Monika Moscibrodzka , Wanga Mulaudzi , Cornelia Müller , Alejandro Mus , Gibwa Musoke , Ioannis Myserlis , Hiroshi Nagai , Neil M. Nagar , Masanori Nakamura , Gopal Narayanan , Antonios Nathanail , Santiago Navarro Fuentes , Joey Neilsen , Chunchong Ni , Michael A. Nowak , Junghwan Oh , Hiroki Okino , Héctor Raúl Olivares Sánchez , Tomoaki Oyama , Feryal Özel , Daniel C. M. Palumbo , Georgios Filippos Paraschos , Harriet Parsons , Nimesh Patel , Ue-Li Pen , Dominic W. Pesce , Vincent Piétu , Alexander Plavin , Aleksandar PopStefanija , Oliver Porth , Ben Prather , Giacomo Principe , Dimitrios Psaltis , Hung-Yi Pu , Alexandra Rahlin , Venkatessh Ramakrishnan , Ramprasad Rao , Mark G. Rawlings , Luciano Rezzolla , Angelo Ricarte , Luca Ricci , Bart Ripperda , Jan Röder , Freek Roelofs , Cristina Romero-Cañizales , Eduardo Ros , Arash Roshanineshat , Helge Rottmann , Alan L. Roy , Ignacio Ruiz , Chet Ruszczyk , Kazi L. J. Rygl , León D. S. Salas , Salvador Sánchez , David Sánchez-Argüelles , Miguel Sánchez-Portal , Mahito Sasada , Kaushik Satapathy , Tuomas Savolainen , F. Peter Schloerb , Jonathan Schonfeld , Karl-Friedrich Schuster , Lijing Shao , Zhiqiang Shen , Sasikumar Silpa , Des Small , Randall Smith , Bong Won Sohn , Jason SooHoo , Kamal Souccar , Joshua S. Stanway , He Sun , Fumie Tazaki , Alexandra J. Tetarenko , Remo P. J. Tilanus , Michael Titus , Kenji Toma , Pablo Torne , Teresa Toscano , Efthalia Traianou , Tyler Trent , Sascha Trippe , Matthew Turk , Ilse van Bemmel , Huib Jan van Langevelde , Daniel R. van Rossum , Jesse Vos , Jan Wagner , Derek Ward-Thompson , John Wardle , Jasmin E. Washington , Jonathan Weintroub , Robert Wharton , Kaj Wiik , Gunther Witzel , Michael F. Wondrak , George N. Wong , Jompoj Wongphexhauxsorn , Qingwen Wu , Nitika Yadlapalli , Paul Yamaguchi , Aristomenis Yfantis , Doosoo Yoon , André Young , Ziri Younsi , Wei Yu , Feng Yuan , Ye-Fei Yuan , Ai-Ling Zeng , J. Anton Zensus , Shuo Zhang , Guang-Yao Zhao , Shan-Shan Zhao

The black-hole images obtained with the Event Horizon Telescope (EHT) are expected to be variable at the dynamical timescale near their horizons. For the black hole at the center of the M87 galaxy, this timescale (5-61 days) is comparable…

High Energy Astrophysical Phenomena · Physics 2024-09-04 Kaushik Satapathy , Dimitrios Psaltis , Feryal Ozel , Lia Medeiros , Sean T. Dougall , Chi-kwan Chan , Maciek Wielgus , Ben S. Prather , George N. Wong , Charles F. Gammie , Kazunori Akiyama , Antxon Alberdi , Walter Alef , Juan Carlos Algaba , Richard Anantua , Keiichi Asada , Rebecca Azulay , Anne-Kathrin Baczko , David R. Ball , Mislav Baloković , John Barrett , Bradford A. Benson , Dan Bintley , Lindy Blackburn , Raymond Blundell , Wilfred Boland , Katherine L. Bouman , Geoffrey C. Bower , Hope A. Boyce , Michael Bremer , Christiaan D. Brinkerink , Roger Brissenden , Silke Britzen , Avery E. Broderick , Dominique Broguiere , Thomas Bronzwaer , Sandra Bustamente , Do-Young Byun , John E. Carlstrom , Andrew Chael , Koushik Chatterjee , Shami Chatterjee , Ming-Tang Chen , Yongjun Chen , Ilje Cho , Pierre Christian , John E. Conway , James M. Cordes , Thomas Crawford , Geoffrey B. Crew , Alejandro Cruz Osorio , Yuzhu Cui , Jordy Davelaar , Mariafelicia De Laurentis , Roger Deane , Jessica T. Dempsey , Gregory Desvignes , Jason Dexter , Sheperd S. Doeleman , Ralph Eatough , Heino Falcke , Joseph R. Farah , Vincent Fish , Edward B. Fomalont , H. Alyson Ford , Raquel Fraga-Encinas , Per Friberg , Christian M. Fromm , Antonio Fuentes , Peter Galison , Roberto García , Olivier Gentaz , Boris Georgiev , Ciriaco Goddi , Roman Gold , Arturo I. Gomez-Ruiz , Jose L. Gómez , Minfeng Gu , Mark A. Gurwell , Kazuhiro Hada , Daryl Haggard , Michael Hecht , Ronald Hesper , Luis C. Ho , Paul T. 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 , Alejandra Jimenez Rosales , Michael D. Johnson , Svetlana G. Jorstad , Taehyun Jung , Mansour Karami , Ramesh Karuppusamy , Tomohisa Kawashima , Garrett K. Keating , Mark Kettenis , Dong-Jin Kim , Jae-Young Kim , Jongsoo Kim , Junhan Kim , Motoki Kino , Jun Yi Koay , Yutaro Kofuji , Patrick M. Koch , Shoko Koyama , Carsten Kramer , Michael Kramer , Thomas P. Krichbaum , Cheng-Yu Kuo , Tod R. Lauer , Sang-Sung Lee , Aviad Levis , Yan-Rong Li , Zhiyuan Li , Michael Lindqvist , Rocco Lico , Greg Lindahl , Jun Liu , Kuo Liu , Miss Elisabetta Liuzzo , Wen-Ping Lo , Andrei Lobanov , Laurent Loinard , Colin J. Lonsdale , Rusen Lu , Nicholas R. MacDonald , Jirong Mao , Nicola Marchili , Sera Markoff , Daniel Marrone , Alan P. Marscher , Ivan Marti-Vidal , Satoki Matsushita , Lynn Matthews , Karl M. Menten , Izumi Mizuno , Yosuke Mizuno , James Moran , Kotaro Moriyama , Monika Moscibrodzka , Cornelia Muller , Alejandro M. Mejias , Gibwa Musoke , Hiroshi Nagai , Neil M. Nagar , Masanori Nakamura , Ramesh Narayan , Gopal Narayanan , Iniyan Natarajan , Antonios Nathanail , Joey Neilsen , Roberto Neri , Chunchong Ni , Aristeidis Noutsos , Michael A. Nowak , Hiroki Okino , Hector Olivares , Gisela N. Ortiz-Leon , Tomoaki Oyama , Daniel C. Palumbo , Jongho Park , Nimesh A. Patel , Ue-Li Pen , Dominic W. Pesce , Vincent Pietu , Richard L. Plambeck , Aleksandar PopStefanija , Oliver Porth , Felix Potzl , Jorge A. Preciado-López , Hung-Yi Pu , Venkatessh Ramakrishnan , Ramprasad Rao , Mark Rawlings , Alexander W. Raymond , Luciano Rezzolla , Bart Ripperda , Freek Roelofs , Alan E. E. Rogers , Eduardo Ros , Mel Rose , Arash Roshanineshat , Helge Rottmann , Alan L. Roy , Chet Ruszczyk , Kazi Rygl , Salvador Sanchez , David Sanchez-Arguelles , Mahito Sasada , Tuomas Savolainen , F Peter Schloerb , Karl-Friedrich Schuster , Lijing Shao , Zhi-Qiang Shen , Des Small , Bong Won Sohn , Jason SooHoo , He Sun , Fumie Tazaki , Alexandra J. Tetarenko , Paul Tiede , Remo Tilanus , Michael Titus , Kenji Toma , Pablo Torne , E. Traianou , Tyler Trent , Sascha Trippe , Ilse van Bemmel , Huib Jan van Langevelde , Daniel R. van Rossum , Jan Wagner , Derek Ward-Thompson , John F. Wardle , Jonathan Weintroub , Norbert Wex , Robert Wharton , Kaj Wiik , Qingwen Wu , DooSoo Yoon , Andre Young , Ken H. Young , Ziri Younsi , Feng Yuan , Ye-Fei Yuan , J. Anton Zensus , Guang-Yao Zhao , Shan-Shan Zhao

The Event Horizon Telescope (EHT) is expected to soon produce polarimetric images of the supermassive black hole at the center of the neighboring galaxy M87. There are indications that this black hole is rapidly spinning. General relativity…

High Energy Physics - Theory · Physics 2020-06-09 Delilah Gates , Daniel Kapec , Alexandru Lupsasca , Yichen Shi , Andrew Strominger

With unprecedented angular resolution, the Event Horizon Telescope (EHT) has opened a new era of black holes. We have previously calculated the expected polarization images of M87* with the EHT observations in mind. There, we demonstrated…

High Energy Astrophysical Phenomena · Physics 2021-07-07 Yuh Tsunetoe , Shin Mineshige , Ken Ohsuga , Tomohisa Kawashima , Kazunori Akiyama

The nearby elliptical galaxy M87 contains one of the only two supermassive black holes whose emission surrounding the event horizon has been imaged by the Event Horizon Telescope (EHT). In 2018, more than two dozen multi-wavelength (MWL)…

High Energy Astrophysical Phenomena · Physics 2024-12-19 J. C. Algaba , M. Balokovic , S. Chandra , W. Y. Cheong , Y. Z. Cui , F. D'Ammando , A. D. Falcone , N. M. Ford , M. Giroletti , C. Goddi , M. A. Gurwell , K. Hada , D. Haggard , S. Jorstad , A. Kaur , T. Kawashima , S. Kerby , J. Y. Kim , M. Kino , E. V. Kravchenko , S. S. Lee , R. S. Lu , S. Markoff , J. Michail , J. Neilsen , M. A. Nowak , G. Principe , V. Ramakrishnan , B. Ripperda , M. Sasada , S. S. Savchenko , C. Sheridan , K. Akiyama , A. Alberdi , W. Alef , R. Anantua , K. Asada , R. Azulay , U. Bach , A. -K. Baczko , D. Ball , B. Bandyopadhyay , J. Barrett , M. Bauböck , B. A. Benson , D. Bintley , L. Blackburn , R. Blundell , K. L. Bouman , G. C. Bower , H. Boyce , M. Bremer , R. Brissenden , S. Britzen , A. E. Broderick , D. Broguiere , T. Bronzwaer , S. Bustamante , J. E. Carlstrom , A. Chael , C. -K. Chan , D. O. Chang , K. Chatterjee , S. Chatterjee , M. -T. Chen , Y. Chen , X. Cheng , I. Cho , P. Christian , N. S. Conroy , J. E. Conway , T. M. Crawford , G. B. Crew , A. Cruz-Osorio , R. Dahale , J. Davelaar , M. De Laurentis , R. Deane , J. Dempsey , G. Desvignes , J. Dexter , V. Dhruv , I. K. Dihingia , S. S. Doeleman , S. A. Dzib , R. P. Eatough , R. Emami , H. Falcke , J. Farah , V. L. Fish , E. Fomalont , H. A. Ford , M. Foschi , R. Fraga-Encinas , W. T. Freeman , P. Friberg , C. M. Fromm , A. Fuentes , P. Galison , C. F. Gammie , R. García , O. Gentaz , B. Georgiev , R. Gold , A. I. Gómez-Ruiz , J. L. Gómez , M. Gu , R. Hesper , D. Heumann , L. C. Ho , P. Ho , M. Honma , C. -W. L. Huang , L. Huang , D. H. Hughes , S. Ikeda , C. M. V. Impellizzeri , M. Inoue , S. Issaoun , D. J. James , B. T. Jannuzi , M. Janssen , B. Jeter , W. Jiang , A. Jiménez-Rosales , M. D. Johnson , A. C. Jones , A. V. Joshi , T. Jung , R. Karuppusamy , G. K. Keating , M. Kettenis , D. -J. Kim , J. Kim , J. Kim , J. Y. Koay , P. Kocherlakota , Y. Kofuji , P. M. Koch , S. Koyama , C. Kramer , J. A. Kramer , M. Kramer , T. P. Krichbaum , C. -Y. Kuo , N. La Bella , A. Levis , Z. Li , R. Lico , G. Lindahl , M. Lindqvist , M. Lisakov , J. Liu , K. Liu , E. Liuzzo , W. -P. Lo , A. P. Lobanov , L. Loinard , C. J. Lonsdale , A. E. Lowitz , N. R. MacDonald , J. Mao , N. Marchili , D. P. Marrone , A. P. Marscher , I. Martí-Vidal , S. Matsushita , L. D. Matthews , L. Medeiros , K. M. Menten , I. Mizuno , Y. Mizuno , J. Montgomery , J. M. Moran , K. Moriyama , M. Moscibrodzka , W. Mulaudzi , C. Müller , H. Müller , A. Mus , G. Musoke , I. Myserlis , H. Nagai , N. M. Nagar , D. G. Nair , M. Nakamura , G. Narayanan , I. Natarajan , A. Nathanail , S. Navarro Fuentes , C. Ni , J. Oh , H. Okino , H. Olivares , T. Oyama , F. Özel , D. C. M. Palumbo , G. Filippos Paraschos , J. Park , H. Parsons , N. Patel , U. -L. Pen , D. W. Pesce , V. Piétu , A. PopStefanija , O. Porth , B. Prather , D. Psaltis , H. -Y. Pu , R. Rao , M. G. Rawlings , A. W. Raymond , L. Rezzolla , A. Ricarte , F. Roelofs , C. Romero-Cañizales , E. Ros , A. Roshanineshat , H. Rottmann , A. L. Roy , I. Ruiz , C. Ruszczyk , K. L. J. Rygl , S. Sánchez , D. Sánchez-Argüelles , M. Sánchez-Portal , K. Satapathy , T. Savolainen , F. P. Schloerb , J. Schonfeld , K. -F. Schuster , L. Shao , Z. Shen , D. Small , B. W. Sohn , J. SooHoo , L. D. Sosapanta Salas , K. Souccar , J. S. Stanway , H. Sun , F. Tazaki , A. J. Tetarenko , P. Tiede , R. P. J. Tilanus , M. Titus , K. Toma , P. Torne , T. Toscano , E. Traianou , T. Trent , S. Trippe , M. Turk , I. van Bemmel , H. J. van Langevelde , D. R. van Rossum , J. Vos , J. Wagner , D. Ward-Thompson , J. Wardle , J. E. Washington , J. Weintroub , R. Wharton , M. Wielgus , K. Wiik , G. Witzel , M. F. Wondrak , G. N. Wong , Q. Wu , N. Yadlapalli , P. Yamaguchi , A. Yfantis , D. Yoon , A. Young , Z. Younsi , W. Yu , F. Yuan , Y. -F. Yuan , J. A. Zensus , S. Zhang , G. -Y. Zhao , S. -S. Zhao , R. Bellazzini , B. Berenji , E. Bissaldi , R. D. Blandford , R. Bonino , P. Bruel , R. A. Cameron , P. A. Caraveo , E. Cavazzuti , C. C. Cheung , S. Ciprini , P. Cristarella Orestano , S. Cutini , N. Di Lalla , A. Dinesh , L. Di Venere , A. Domínguez , S. J. Fegan , A. Franckowiak , Y. Fukazawa , P. Fusco , F. Gargano , C. Gasbarra , S. Germani , M. Giliberti , I. A. Grenier , E. Hays , D. Horan , M. Kuss , S. Larsson , I. Liodakis , F. Longo , F. Loparco , M. N. Lovellette , S. Maldera , M. N. Mazziotta , I. Mereu , P. F. Michelson , N. Mirabal , T. Mizuno , M. E. Monzani , A. Morselli , M. Negro , N. Omodei , E. Orlando , M. Persic , S. Rainò , B. Rani , A. Reimer , O. Reimer , M. Sánchez-Conde , P. M. Saz Parkinson , C. Sgrò , E. J. Siskind , P. Spinelli , D. J. Suson , H. Tajima , D. F. Torres , G. Zaharijas , F. Aharonian , F. Ait Benkhali , J. Aschersleben , H. Ashkar , M. Backes , V. Barbosa Martins , R. Batzofin , Y. Becherini , D. Berge , M. Böttcher , C. Boisson , J. Bolmont , M. de Bony de Lavergne , J. Borowska , M. Bouyahiaoui , F. Bradascio , R. Brose , A. 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Terauchi , T. Terzic , M. Teshima , S. Truzzi , A. Tutone , S. Ubach , J. van Scherpenberg , M. Vazquez Acosta , S. Ventura , G. Verna , I. Viale , C. F. Vigorito , V. Vitale , I. Vovk , R. Walter , M. Will , C. Wunderlich , T. Yamamoto , A. Acharyya , C. B. Adams , P. Bangale , J. T. Bartkoske , W. Benbow , J. L. Christiansen , A. Duerr , M. Errando , Q. Feng , G. M. Foote , L. Fortson , A. Furniss , W. Hanlon , O. Hervet , C. E. Hinrichs , J. Holder , T. B. Humensky , W. Jin , M. N. Johnson , P. Kaaret , M. Kertzman , D. Kieda , T. K. Kleiner , N. Korzoun , F. Krennrich , S. Kumar , M. J. Lang , M. Lundy , G. Maier , C. E. McGrath , M. J. Millard , C. L. Mooney , P. Moriarty , R. Mukherjee , W. Ning , S. O'Brien , R. A. Ong , M. Pohl , E. Pueschel , J. Quinn , K. Ragan , P. T. Reynolds , D. Ribeiro , E. Roache , J. L. Ryan , I. Sadeh , L. Saha , M. Santander , G. H. Sembroski , R. Shang , M. Splettstoesser , A. K. Talluri , J. V. Tucci , J. Valverde , V. V. Vassiliev , D. A. Williams , S. L. Wong , Z. Chen , L. Cui , T. Hirota , B. Li , G. Li , Q. Liu , X. Liu , Z. Liu , J. Ma , K. Niinuma , H. Ro , N. Sakai , S. Sawada-Satoh , K. Wajima , J. Wang , N. Wang , B. Xia , H. Yan , Y. Yonekura , H. Zhang , R. Zhao , W. Zhong , The Event Horizon Telescope - Multi-wavelength science working group , The Event Horizon Telescope Collaboration , The Fermi Large Area Telescope Collaboration , H. E. S. S. Collaboration , MAGIC Collaboration , VERITAS Collaboration , EAVN Collaboration

Event Horizon Telescope (EHT) observations of M87* provide a means of constraining parameters of both the black hole and its surrounding plasma. However, intrinsic variability of the emitting material introduces a major source of systematic…

High Energy Astrophysical Phenomena · Physics 2025-11-27 Dominic O. Chang , Micael D. Johnson , Paul Tiede

The Event Horizon Telescope (EHT) Collaboration has recently published the first horizon-scale images of the supermassive black holes M87* and Sgr A* and provided some first information on the physical conditions in their vicinity. The…

High Energy Astrophysical Phenomena · Physics 2023-11-20 Kotaro Moriyama , Alejandro Cruz-Osorio , Yosuke Mizuno , Christian M. Fromm , Antonios Nathanail , Luciano Rezzolla

The Event Horizon Telescope (EHT) has imaged two supermassive black holes, Messier 87* (M87*) and Sagittarius A* (Sgr A*), using very-long-baseline interferometry (VLBI). The theoretical analyses of each source suggest magnetically arrested…

High Energy Astrophysical Phenomena · Physics 2024-07-16 Kaitlyn M. Shavelle , Daniel C. M. Palumbo
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