NAOC Open IR
First M87 Event Horizon Telescope Results. VII. Polarization of the Ring
Akiyama,Kazunori1,2,3; Algaba,Juan Carlos4; Alberdi,Antxon5; Alef,Walter6; Anantua,Richard3,7,8; Asada,Keiichi9; Azulay,Rebecca6,10,11; Baczko,Anne-Kathrin6; Ball,David12; Balokovi?,Mislav13,14; Barrett,John1; Benson,Bradford A.15,16; Bintley,Dan17; Blackburn,Lindy3,7; Blundell,Raymond7; Boland,Wilfred18; Bouman,Katherine L.3,7,19; Bower,Geoffrey C.20; Boyce,Hope21,22; Bremer,Michael23; Brinkerink,Christiaan D.24; Brissenden,Roger3,7; Britzen,Silke6; Broderick,Avery E.25,26,27; Broguiere,Dominique23; Bronzwaer,Thomas24; Byun,Do-Young28,29; Carlstrom,John E.16,30,31,32; Chael,Andrew33; Chan,Chi-kwan12,34; Chatterjee,Shami35; Chatterjee,Koushik36; Chen,Ming-Tang20; Chen,Yongjun37,38; Chesler,Paul M.3; Cho,Ilje28,29; Christian,Pierre39; Conway,John E.40; Cordes,James M.35; Crawford,Thomas M.16,30; Crew,Geoffrey B.1; Cruz-Osorio,Alejandro41; Cui,Yuzhu42,43; Davelaar,Jordy8,24,44; De Laurentis,Mariafelicia41,45,46; Deane,Roger47,48,49; Dempsey,Jessica17; Desvignes,Gregory50; Dexter,Jason51; Doeleman,Sheperd S.3,7; Eatough,Ralph P.6,52; Falcke,Heino24; Farah,Joseph3,7,53; Fish,Vincent L.1; Fomalont,Ed54; Ford,H. Alyson12; Fraga-Encinas,Raquel24; Freeman,William T.55,56; Friberg,Per17; Fromm,Christian M.3,7,41; Fuentes,Antonio5; Galison,Peter3,57,58; Gammie,Charles F.59,60; García,Roberto23; Gentaz,Olivier23; Georgiev,Boris26,27; Goddi,Ciriaco24,61; Gold,Roman25,62; Gómez,José L.5; Gómez-Ruiz,Arturo I.63,64; Gu,Minfeng37,65; Gurwell,Mark7; Hada,Kazuhiro42,43; Haggard,Daryl21,22; Hecht,Michael H.1; Hesper,Ronald66; Ho,Luis C.67,68; Ho,Paul9; Honma,Mareki42,43,69; Huang,Chih-Wei L.9; Huang,Lei37,65; Hughes,David H.63; Ikeda,Shiro2,70,71,72; Inoue,Makoto9; Issaoun,Sara24; James,David J.73; Jannuzi,Buell T.12; Janssen,Michael6; Jeter,Britton26,27; Jiang,Wu37; Jimenez-Rosales,Alejandra24; Johnson,Michael D.3,7; Jorstad,Svetlana74,75; Jung,Taehyun28,29; Karami,Mansour25,26; Karuppusamy,Ramesh6; Kawashima,Tomohisa76; Keating,Garrett K.7; Kettenis,Mark77; Kim,Dong-Jin6; Kim,Jae-Young6,28; Kim,Jongsoo28; Kim,Junhan12,19; Kino,Motoki2,78; Koay,Jun Yi9; Kofuji,Yutaro42,69; Koch,Patrick M.9; Koyama,Shoko9; Kramer,Michael6; Kramer,Carsten23; Krichbaum,Thomas P.6; Kuo,Cheng-Yu9,79; Lauer,Tod R.80; Lee,Sang-Sung28; Levis,Aviad19; Li,Yan-Rong81; Li,Zhiyuan82,83; Lindqvist,Michael40; Lico,Rocco5,6; Lindahl,Greg7; Liu,Jun6; Liu,Kuo6; Liuzzo,Elisabetta84; Lo,Wen-Ping9,85; Lobanov,Andrei P.6; Loinard,Laurent86,87; Lonsdale,Colin1; Lu,Ru-Sen6,37,38; MacDonald,Nicholas R.6; Mao,Jirong88,89,90; Marchili,Nicola6,84; Markoff,Sera36,91; Marrone,Daniel P.12; Marscher,Alan P.74; Martí-Vidal,Iván10,11; Matsushita,Satoki9; Matthews,Lynn D.1; Medeiros,Lia12,92; Menten,Karl M.6; Mizuno,Izumi17; Mizuno,Yosuke41,93; Moran,James M.3,7; Moriyama,Kotaro1,42; Moscibrodzka,Monika24; Müller,Cornelia6,24; Musoke,Gibwa24,36; Mejías,Alejandro Mus10,11; Michalik,Daniel94,95; Nadolski,Andrew60; Nagai,Hiroshi2,43; Nagar,Neil M.96; Nakamura,Masanori9,97; Narayan,Ramesh3,7; Narayanan,Gopal98; Natarajan,Iniyan47,49,99; Nathanail,Antonios41,100; Neilsen,Joey101; Neri,Roberto23; Ni,Chunchong26,27; Noutsos,Aristeidis6; Nowak,Michael A.102; Okino,Hiroki42,69; Olivares,Héctor24; Ortiz-León,Gisela N.6; Oyama,Tomoaki42; ?zel,Feryal12; Palumbo,Daniel C. M.3,7; Park,Jongho9; Patel,Nimesh7; Pen,Ue-Li25,103,104,105; Pesce,Dominic W.3,7; Piétu,Vincent23; Plambeck,Richard106; PopStefanija,Aleksandar98; Porth,Oliver36,41; P?tzl,Felix M.6; Prather,Ben58; Preciado-López,Jorge A.25; Psaltis,Dimitrios12; Pu,Hung-Yi9,25,107; Ramakrishnan,Venkatessh96; Rao,Ramprasad20; Rawlings,Mark G.17; Raymond,Alexander W.3,7; Rezzolla,Luciano41,108,109; Ricarte,Angelo3,7; Ripperda,Bart8,110; Roelofs,Freek24; Rogers,Alan1; Ros,Eduardo6; Rose,Mel12; Roshanineshat,Arash12; Rottmann,Helge6; Roy,Alan L.6; Ruszczyk,Chet1; Rygl,Kazi L. J.84; Sánchez,Salvador111; Sánchez-Arguelles,David63,64; Sasada,Mahito42,112; Savolainen,Tuomas6,113,114; Schloerb,F. Peter98; Schuster,Karl-Friedrich23; Shao,Lijing6,68; Shen,Zhiqiang37,38; Small,Des77; Sohn,Bong Won28,29,115; SooHoo,Jason1; Sun,He19; Tazaki,Fumie42; Tetarenko,Alexandra J.17; Tiede,Paul26,27; Tilanus,Remo P. J.12,24,61,116; Titus,Michael1; Toma,Kenji117,118; Torne,Pablo6,111; Trent,Tyler12; Traianou,Efthalia6; Trippe,Sascha119; Bemmel,Ilse van77; van Langevelde,Huib Jan77,120; van Rossum,Daniel R.24; Wagner,Jan6; Ward-Thompson,Derek121; Wardle,John122; Weintroub,Jonathan3,7; Wex,Norbert6; Wharton,Robert6; Wielgus,Maciek3,7; Wong,George N.59; Wu,Qingwen123; Yoon,Doosoo36; Young,André24; Young,Ken7; Younsi,Ziri41,124; Yuan,Feng37,65,125; Yuan,Ye-Fei126; Zensus,J. Anton6; Zhao,Guang-Yao5; Zhao,Shan-Shan37
2021-03-01
Source PublicationThe Astrophysical Journal Letters
ISSN2041-8205
Volume910Issue:1
AbstractAbstract 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 ring is significantly polarized. The resolved fractional linear polarization has a maximum located in the southwest part of the ring, where it rises to the level of ~15%. The polarization position angles are arranged in a nearly azimuthal pattern. We perform quantitative measurements of relevant polarimetric properties of the compact emission and find evidence for the temporal evolution of the polarized source structure over one week of EHT observations. The details of the polarimetric data reduction and calibration methodology are provided. We carry out the data analysis using multiple independent imaging and modeling techniques, each of which is validated against a suite of synthetic data sets. The gross polarimetric structure and its apparent evolution with time are insensitive to the method used to reconstruct the image. These polarimetric images carry information about the structure of the magnetic fields responsible for the synchrotron emission. Their physical interpretation is discussed in an accompanying publication.
KeywordPolarimetry Radio interferometry Very long baseline interferometry Supermassive black holes Active galactic nuclei Low-luminosity active galactic nuclei Astronomy data modeling Galaxy accretion disks Galaxies: individual: M87
DOI10.3847/2041-8213/abe71d
Language英语
WOS IDIOP:2041-8205-910-1-abe71d
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/60199
Collection中国科学院国家天文台
Corresponding AuthorLoinard,Laurent
Affiliation1.Massachusetts Institute of Technology Haystack Observatory, 99 Millstone Road, Westford, MA 01886, USA
2.National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
3.Black Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USA
4.Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
5.Instituto de Astrofísica de Andalucía-CSIC, Glorieta de la Astronomía s/n, E-18008 Granada, Spain
6.Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
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Recommended Citation
GB/T 7714
Akiyama,Kazunori,Algaba,Juan Carlos,Alberdi,Antxon,et al. First M87 Event Horizon Telescope Results. VII. Polarization of the Ring[J]. The Astrophysical Journal Letters,2021,910(1).
APA Akiyama,Kazunori.,Algaba,Juan Carlos.,Alberdi,Antxon.,Alef,Walter.,Anantua,Richard.,...&Zhao,Shan-Shan.(2021).First M87 Event Horizon Telescope Results. VII. Polarization of the Ring.The Astrophysical Journal Letters,910(1).
MLA Akiyama,Kazunori,et al."First M87 Event Horizon Telescope Results. VII. Polarization of the Ring".The Astrophysical Journal Letters 910.1(2021).
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