Skip navigation
  • INAF logo
  • Home
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects
  • Explore by
    • Research outputs
    • Researchers
    • Organization units
    • Projects
  • Login:
    • My DSpace
    • Receive email
      updates
    • Edit Account details
  • Italian
  • English

  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/31835
Title: First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
Authors: Event Horizon Telescope Collaboration
Akiyama, Kazunori
Algaba, Juan Carlos
Alberdi, Antxon
Alef, Walter
Anantua, Richard
Asada, Keiichi
Azulay, Rebecca
Baczko, Anne-Kathrin
Ball, David
Baloković, Mislav
Barrett, John
Benson, Bradford A.
Bintley, Dan
Blackburn, Lindy
Blundell, Raymond
Boland, Wilfred
Bouman, Katherine L.
Bower, Geoffrey C.
Boyce, Hope
Bremer, Michael
Brinkerink, Christiaan D.
Brissenden, Roger
Britzen, Silke
Broderick, Avery E.
Broguiere, Dominique
Bronzwaer, Thomas
Byun, Do-Young
Carlstrom, John E.
Chael, Andrew
Chan, Chi-kwan
Chatterjee, Shami
Chatterjee, Koushik
Chen, Ming-Tang
Chen, Yongjun
Chesler, Paul M.
Cho, Ilje
Christian, Pierre
Conway, John E.
Cordes, James M.
Crawford, Thomas M.
Crew, Geoffrey B.
Cruz-Osorio, Alejandro
Cui, Yuzhu
Davelaar, Jordy
De Laurentis, Mariafelicia
Deane, Roger
Dempsey, Jessica
Desvignes, Gregory
Dexter, Jason
Doeleman, Sheperd S.
Eatough, Ralph P.
Falcke, Heino
Farah, Joseph
Fish, Vincent L.
Fomalont, Ed
Ford, H. Alyson
Fraga-Encinas, Raquel
Friberg, Per
Fromm, Christian M.
Fuentes, Antonio
Galison, Peter
Gammie, Charles F.
García, Roberto
Gelles, Zachary
Gentaz, Olivier
Georgiev, Boris
GODDI, CIRIACO 
Gold, Roman
Gómez, José L.
Gómez-Ruiz, Arturo I.
Gu, Minfeng
Gurwell, Mark
Hada, Kazuhiro
Haggard, Daryl
Hecht, Michael H.
Hesper, Ronald
Himwich, Elizabeth
Ho, Luis C.
Ho, Paul
Honma, Mareki
Huang, Chih-Wei L.
Huang, Lei
Hughes, David H.
Ikeda, Shiro
Inoue, Makoto
Issaoun, Sara
James, David J.
Jannuzi, Buell T.
Janssen, Michael
Jeter, Britton
Jiang, Wu
Jimenez-Rosales, Alejandra
Johnson, Michael D.
Jorstad, Svetlana
Jung, Taehyun
Karami, Mansour
Karuppusamy, Ramesh
Kawashima, Tomohisa
Keating, Garrett K.
Kettenis, Mark
Kim, Dong-Jin
Kim, Jae-Young
Kim, Jongsoo
Kim, Junhan
Kino, Motoki
Koay, Jun Yi
Kofuji, Yutaro
Koch, Patrick M.
Koyama, Shoko
Kramer, Michael
Kramer, Carsten
Krichbaum, Thomas P.
Kuo, Cheng-Yu
Lauer, Tod R.
Lee, Sang-Sung
Levis, Aviad
Li, Yan-Rong
Li, Zhiyuan
Lindqvist, Michael
Lico, Rocco
Lindahl, Greg
Liu, Jun
Liu, Kuo
LIUZZO, Elisabetta Teodorina 
Lo, Wen-Ping
Lobanov, Andrei P.
Loinard, Laurent
Lonsdale, Colin
Lu, Ru-Sen
MacDonald, Nicholas R.
Mao, Jirong
MARCHILI, Nicola 
Markoff, Sera
Marrone, Daniel P.
Marscher, Alan P.
Martí-Vidal, Iván
Matsushita, Satoki
Matthews, Lynn D.
Medeiros, Lia
Menten, Karl M.
Mizuno, Izumi
Mizuno, Yosuke
Moran, James M.
Moriyama, Kotaro
Moscibrodzka, Monika
Müller, Cornelia
Musoke, Gibwa
Mus Mejías, Alejandro
Michalik, Daniel
Nadolski, Andrew
Nagai, Hiroshi
Nagar, Neil M.
Nakamura, Masanori
Narayan, Ramesh
Narayanan, Gopal
Natarajan, Iniyan
Nathanail, Antonios
Neilsen, Joey
Neri, Roberto
Ni, Chunchong
Noutsos, Aristeidis
Nowak, Michael A.
Okino, Hiroki
Olivares, Héctor
Ortiz-León, Gisela N.
Oyama, Tomoaki
Özel, Feryal
Palumbo, Daniel C. M.
Park, Jongho
Patel, Nimesh
Pen, Ue-Li
Pesce, Dominic W.
Piétu, Vincent
Plambeck, Richard
PopStefanija, Aleksandar
Porth, Oliver
Pötzl, Felix M.
Prather, Ben
Preciado-López, Jorge A.
Psaltis, Dimitrios
Pu, Hung-Yi
Ramakrishnan, Venkatessh
Rao, Ramprasad
Rawlings, Mark G.
Raymond, Alexander W.
Rezzolla, Luciano
Ricarte, Angelo
Ripperda, Bart
Roelofs, Freek
Rogers, Alan
Ros, Eduardo
Rose, Mel
Roshanineshat, Arash
Rottmann, Helge
Roy, Alan L.
Ruszczyk, Chet
RYGL, Kazi Lucie Jessica 
Sánchez, Salvador
Sánchez-Arguelles, David
Sasada, Mahito
Savolainen, Tuomas
Schloerb, F. Peter
Schuster, Karl-Friedrich
Shao, Lijing
Shen, Zhiqiang
Small, Des
Sohn, Bong Won
SooHoo, Jason
Sun, He
Tazaki, Fumie
Tetarenko, Alexandra J.
Tiede, Paul
Tilanus, Remo P. J.
Titus, Michael
Toma, Kenji
Torne, Pablo
Trent, Tyler
Traianou, Efthalia
Trippe, Sascha
van Bemmel, Ilse
van Langevelde, Huib Jan
van Rossum, Daniel R.
Wagner, Jan
Ward-Thompson, Derek
Wardle, John
Weintroub, Jonathan
Wex, Norbert
Wharton, Robert
Wielgus, Maciek
Wong, George N.
Wu, Qingwen
Yoon, Doosoo
Young, André
Young, Ken
Younsi, Ziri
Yuan, Feng
Yuan, Ye-Fei
Zensus, J. Anton
Zhao, Guang-Yao
Zhao, Shan-Shan
Issue Date: 2021
Journal: THE ASTROPHYSICAL JOURNAL LETTERS 
Number: 910
Issue: 1
First Page: L13
Abstract: 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 plasma properties near the black hole. Here we compare the resolved polarization structure observed by the EHT, along with simultaneous unresolved observations with the Atacama Large Millimeter/submillimeter Array, to expectations from theoretical models. The low fractional linear polarization in the resolved image suggests that the polarization is scrambled on scales smaller than the EHT beam, which we attribute to Faraday rotation internal to the emission region. We estimate the average density n<SUB>e</SUB> ∼ 10<SUP>4-7</SUP> cm<SUP>-3</SUP>, magnetic field strength B ∼ 1-30 G, and electron temperature T<SUB>e</SUB> ∼ (1-12) × 10<SUP>10</SUP> K of the radiating plasma in a simple one-zone emission model. We show that the net azimuthal linear polarization pattern may result from organized, poloidal magnetic fields in the emission region. In a quantitative comparison with a large library of simulated polarimetric images from general relativistic magnetohydrodynamic (GRMHD) simulations, we identify a subset of physical models that can explain critical features of the polarimetric EHT observations while producing a relativistic jet of sufficient power. The consistent GRMHD models are all of magnetically arrested accretion disks, where near-horizon magnetic fields are dynamically important. We use the models to infer a mass accretion rate onto the black hole in M87 of (3-20) × 10<SUP>-4</SUP> M<SUB>⊙</SUB> yr<SUP>-1</SUP>.
URI: http://hdl.handle.net/20.500.12386/31835
URL: https://iopscience.iop.org/article/10.3847/2041-8213/abe4de
https://api.elsevier.com/content/abstract/scopus_id/85103626755
ISSN: 2041-8205
DOI: 10.3847/2041-8213/abe4de
Bibcode ADS: 2021ApJ...910L..13E
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

Files in This Item:
File Description SizeFormat
Akiyama_2021_ApJL_910_L13.pdfPdf editoriale7.01 MBAdobe PDFView/Open
Show full item record

Page view(s)

7
checked on Jul 4, 2022

Download(s)

2
checked on Jul 4, 2022

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are published in Open Access, unless otherwise indicated.


Explore by
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects

Informazioni e guide per autori

https://openaccess-info.inaf.it: tutte le informazioni sull'accesso aperto in INAF

Come si inserisce un prodotto: le guide a OA@INAF

La Policy INAF sull'accesso aperto

Documenti e modelli scaricabili

Feedback
Built with DSpace-CRIS - Extension maintained and optimized by Logo 4SCIENCE