First M87 Event Horizon Telescope Results. VII. Polarization of the Ring

@article{Akiyama2021FirstME,
  title={First M87 Event Horizon Telescope Results. VII. Polarization of the Ring},
  author={Kazunori Akiyama and Juan Carlos Algaba and Antxon Alberdi and Walter Alef and Richard Anantua and Keiichi Asada and Rebecca Azulay and Anne-Kathrin Baczko and David Ball and Mislav Balokovi{\'c} and John Barrett and Bradford A. Benson and Dan Bintley and Lindy Blackburn and Raymond Blundell and Wilfred Boland and Katherine L. Bouman and Geoffrey C. Bower and Hope Boyce and Michael Bremer and Christiaan D. Brinkerink and Roger Brissenden and Silke Britzen and Avery E. Broderick and Dominique Brogui{\`e}re and Thomas Bronzwaer and Do-Young Byun and J. E. Carlstrom and Andrew Chael and Chi-kwan Chan and Shami Chatterjee and Koushik Chatterjee and Ming-Tang Chen and Yongjun 永军 Chen 陈 and Paul M. Chesler and Ilje Cho and Pierre Christian and John E. Conway and James M. Cordes and Thomas M. Crawford and Geoffrey B. Crew and Alejandro Cruz-Osorio and Yuzhu Cui and Jordy Davelaar and Mariafelicia De Laurentis and Roger Deane and Jessica Dempsey and Gregory Desvignes and Jason Dexter and Sheperd S. Doeleman and Ralph P. Eatough and Heino Falcke and Joseph R. Farah and Vincent L. Fish and Edward B. Fomalont and Heather A. Ford and Raquel Fraga-Encinas and William T. Freeman and Per Friberg and Christian M. Fromm and Antonio Fuentes and Peter Galison and Charles F. Gammie and Roberto Garc{\'i}a and Olivier Gentaz and Boris Georgiev and Ciriaco Goddi and Roman Gold and Jos{\'e} L. G{\'o}mez and Arturo I. G{\'o}mez-Ruiz and Minfeng 敏峰 Gu 顾 and Mark A. Gurwell and Kazuhiro Hada and Daryl Haggard and Michael H. Hecht and Ronald Hesper and Luis C. 子山 Ho 何 and Paul Ho and Mareki Honma and Chih-Wei L. Huang and Lei 磊 Huang 黄 and David H. Hughes and Shiro Ikeda and Makoto Inoue and Sara Issaoun and David J. James and B. T. Jannuzi and Michael Janssen and Britton Jeter and Wu 悟 Jiang 江 and Alejandra Jim{\'e}nez-Rosales and Michael D. Johnson and Svetlana Jorstad and Taehyun Jung and Mansour Karami and Ramesh Karuppusamy and Tomohisa Kawashima and Garrett K. Keating and Mark Kettenis and Dong-Jin Kim and Jae-Young Kim and Jongsoo Kim and Junhan Kim and Motoki Kino and Jun Yi Koay and Yutaro Kofuji and Patrick M. Koch and Shoko Koyama and Michael Kramer and Carsten Kramer and Thomas P. Krichbaum and Cheng-Yu Kuo and Tod R. Lauer and Sang-Sung Lee and Aviad Levis and Yan-Rong 彦荣 Li 李 and Zhiyuan 志远 Li 李 and Michael Lindqvist and Rocco Lico and Greg Lindahl and Jun 俊 Liu 刘 and Kuo Liu and Elisabetta Liuzzo and Wen-Ping Lo and A. P. Lobanov and Laurent Loinard and Colin J. Lonsdale and Ru-Sen 如森 Lu 路 and Nicholas R. MacDonald and Jirong 基荣 Mao 毛 and Nicola Marchili and Sera B. Markoff and Daniel P. Marrone and Alan P. Marscher and Iv{\'a}n Mart{\'i}-Vidal and Satoki Matsushita and Lynn D. Matthews and Lia Medeiros and Karl M. Menten and Izumi Mizuno and Yosuke Mizuno and James M. Moran and Kotaro Moriyama and Monika Mościbrodzka and Cornelia M{\"u}ller and Gibwa Musoke and Alejandro Mus Mej{\'i}as and Daniel Michalik and Andrew Nadolski and Hiroshi Nagai and Neil M. Nagar and Masanori Nakamura and Ramesh Narayan and Gopal Narayanan and Iniyan Natarajan and Antonios Nathanail and Joey Neilsen and Roberto Neri and Chunchong Ni and Aristeidis Noutsos and Michael A. Nowak and Hiroki Okino and H{\'e}ctor Olivares and Gisela N. Ortiz-Le{\'o}n and Tomoaki Oyama and Feryal {\"O}zel and Daniel C. M. Palumbo and Jongho Park and Nimesh Patel and Ue-li Pen and Dominic W. Pesce and Vincent Pi{\'e}tu and Richard Plambeck and Aleksandar PopStefanija and Oliver Porth and Felix M. P{\"o}tzl and Ben S. Prather and Jorge A. Preciado-L{\'o}pez and Dimitrios Psaltis and Hung-Yi Pu and Venkatessh Ramakrishnan and Ramprasad Rao and Mark G. Rawlings and Alexander W. Raymond and Luciano Rezzolla and Angelo Ricarte and Bart Ripperda and Freek Roelofs and Alan Rogers and Eduardo Ros and Mel Rose and Arash Roshanineshat and H. Rottmann and Alan L. Roy and Chester A. Ruszczyk and Kazi L. J. Rygl and Salvador S{\'a}nchez and David S{\'a}nchez-Arguelles and Mahito Sasada and Tuomas Savolainen and F. Peter Schloerb and Karl F. Schuster and Lijing Shao and Zhiqiang 志强 Shen 沈 and Des Small and Bong Won Sohn and Jason SooHoo and He 赫 Sun 孙 and Fumie Tazaki and Alexandra J. Tetarenko and Paul Tiede and Remo P. J. Tilanus and Michael Titus and Kenji Toma and Pablo Torne and Tyler Trent and Efthalia Traianou and Sascha Trippe and Ilse van Bemmel and Huib Jan van Langevelde and Daniel R. van Rossum and Jan Wagner and Derek Ward-Thompson and J. F. C. Wardle and Jonathan Weintroub and Norbert Wex and Robert S. Wharton and Maciek Wielgus and George N. Wong and Qingwen 庆文 Wu 吴 and Doosoo Yoon and Andr{\'e} Young and Ken Young and Ziri Younsi and Feng 峰 Yuan 袁 and Ye-Fei 业飞 Yuan 袁 and J. Anton Zensus and Guang-Yao Zhao and Shan-Shan Zhao},
  journal={The Astrophysical Journal Letters},
  year={2021},
  volume={910}
}
  • K. Akiyama, J. Algaba, +236 authors Shan-Shan Zhao
  • Published 2021
  • Physics
  • The Astrophysical Journal Letters
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 morphology. This structure originates from synchrotron emission produced by relativistic plasma located in the immediate vicinity of the black hole. Here we present the corresponding linear-polarimetric EHT images of the center of M87. We find that only a part of the… Expand
First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
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 probesExpand
Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign
In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent withExpand
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We present the results from a full polarization study carried out with the Atacama Large Millimeter/submillimeter Array (ALMA) during the first Very Long Baseline Interferometry (VLBI) campaign,Expand
High-Frequency Polarization Variability from Active Galactic Nuclei
The linear polarization of non-thermal emission encodes information about the structure of the magnetic fields, either from the region where the emission is produced (i.e., the intrinsic polarizationExpand
Strong Limits on Dark Matter Annihilation from the Event Horizon Telescope Observations of M87$^\star$
The fast developments of radio astronomy open a new window to explore the properties of Dark Matter (DM). The recent direct imaging of the supermassive black hole (SMBH) at the center of M87 radioExpand
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The apparent angular size of the shadow of a black hole in an expanding Universe is redshift-dependent. Since cosmological redshifts change with time known as the redshift drift allExpand
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We develop a simple toy model for polarized images of synchrotron emission from an equatorial source around a Kerr black hole by using a semi-analytic solution of the null geodesic equation andExpand
The Bulk Flow Velocity and Acceleration of the Inner Jet in M87
  • B. Punsly
  • Physics
  • The Astrophysical Journal
  • 2021
A high sensitivity, 7 mm Very Long Baseline Array image of M87 is analyzed in order to estimate the jet velocity within 0.65 mas of the point of origin. The image captured a high signal-to-noise,Expand
An Unofficial Account of the Beginnings of VLBI Polarimetry: From Jodrell Bank to the Event Horizon Telescope
I offer a brief and personal history of the development of polarization sensitive observations with widely separated antennas. The story starts at Jodrell Bank in the late 1960s with a 24 km baselineExpand
Polarized image of a Schwarzschild black hole with a thin accretion disk as photon couples to Weyl tensor
We have studied polarized image of a Schwarzschild black hole with an equatorial thin accretion disk as photon couples to Weyl tensor. The birefringence of photon originating from the coupling affectExpand
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References

SHOWING 1-10 OF 113 REFERENCES
First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
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 implicationsExpand
First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
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 probesExpand
First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
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 modelsExpand
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
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 studyExpand
First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
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 μas, consistentExpand
Linear polarization in the nucleus of M87 at 7 mm and 1.3 cm
We report on high angular resolution polarimetric observations of the nearby radio galaxy M87 using the Very Long Baseline Array at 24 GHz ($\lambda=$1.3 cm) and 43 GHz ($\lambda=$7 mm) in 2017-2018.Expand
First M87 Event Horizon Telescope Results. II. Array and Instrumentation
The Event Horizon Telescope (EHT) is a very long baseline interferometry (VLBI) array that comprises millimeter- and submillimeter-wavelength telescopes separated by distances comparable to theExpand
Polarimetric Properties of Event Horizon Telescope Targets from ALMA
We present the results from a full polarization study carried out with the Atacama Large Millimeter/submillimeter Array (ALMA) during the first Very Long Baseline Interferometry (VLBI) campaign,Expand
First M87 Event Horizon Telescope Results. III. Data Processing and Calibration
We present the calibration and reduction of Event Horizon Telescope (EHT) 1.3 mm radio wavelength observations of the supermassive black hole candidate at the center of the radio galaxy M87 and theExpand
Resolved magnetic-field structure and variability near the event horizon of Sagittarius A*
TLDR
Interferometric observations at 1.3-millimeter wavelength are reported that spatially resolve the linearly polarized emission from the Galactic Center supermassive black hole, Sagittarius A*. Expand
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