Details

Autor(en) / Beteiligte

• Psaltis, Dimitrios
• Medeiros, Lia
• Christian, Pierre
• Özel, Feryal
• Alberdi, Antxon
• Alef, Walter
• Asada, Keiichi
• Azulay, Rebecca
• Baloković, Mislav
• Blackburn, Lindy
• Bower, Geoffrey C.
• Brinkerink, Christiaan D.
• Broguiere, Dominique
• Bronzwaer, Thomas
• Byun, Do-Young
• Carlstrom, John E.
• Chael, Andrew
• Chatterjee, Shami
• Chatterjee, Koushik
• Chen, Ming-Tang
• Chen, Yongjun
• Cho, Ilje
• Conway, John E.
• Crew, Geoffrey B.
• De Laurentis, Mariafelicia
• Desvignes, Gregory
• Dexter, Jason
• Friberg, Per
• Gammie, Charles F.
• Goddi, Ciriaco
• Gómez, José L.
• Gu, Minfeng
• Gurwell, Mark
• Hada, Kazuhiro
• Ho, Paul
• Honma, Mareki
• Inoue, Makoto
• Jiang, Wu
• Jimenez-Rosales, Alejandra
• Johnson, Michael D.
• Jorstad, Svetlana
• Karami, Mansour
• Karuppusamy, Ramesh
• Kettenis, Mark
• Kim, Junhan
• Kino, Motoki
• Koch, Patrick M.
• Koyama, Shoko
• Kramer, Carsten
• Krichbaum, Thomas P.
• Kuo, Cheng-Yu
• Liuzzo, Elisabetta
• Lo, Wen-Ping
• Lonsdale, Colin
• Lu, Ru-Sen
• Mao, Jirong
• Martí-Vidal, Iván
• Matsushita, Satoki
• Mizuno, Yosuke
• Mizuno, Izumi
• Moran, James M.
• Moriyama, Kotaro
• Müller, Cornelia
• Mus Mejías, Alejandro
• Nagar, Neil M.
• Narayan, Ramesh
• Narayanan, Gopal
• Natarajan, Iniyan
• Neri, Roberto
• Okino, Hiroki
• Park, Jongho
• PopStefanija, Aleksandar
• Prather, Ben
• Preciado-López, Jorge A.
• Raymond, Alexander W.
• Ripperda, Bart
• Ros, Eduardo
• Rose, Mel
• Ruszczyk, Chet
• Rygl, Kazi L. J.
• Sánchez, Salvador
• Sasada, Mahito
• Savolainen, Tuomas
• Schuster, Karl-Friedrich
• Shao, Lijing
• Shen, Zhiqiang
• Small, Des
• Sohn, Bong Won
• SooHoo, Jason
• Tazaki, Fumie
• Torne, Pablo
• Trent, Tyler
• van Bemmel, Ilse
• van Langevelde, Huib Jan
• Wagner, Jan
• Wharton, Robert
• Wong, George N.
• Yoon, Doosoo
• Young, André
• Yuan, Feng

Titel

Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole

Ist Teil von

• Physical review letters, 2020-10, Vol.125 (14), p.1-141104, Article 141104

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2020

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The 2017 Event Horizon Telescope (EHT) observations of the central source in M87 have led to the first measurement of the size of a black-hole shadow. This observation offers a new and clean gravitational test of the black-hole metric in the strong-field regime. We show analytically that spacetimes that deviate from the Kerr metric but satisfy weak-field tests can lead to large deviations in the predicted black-hole shadows that are inconsistent with even the current EHT measurements. We use numerical calculations of regular, parametric, non-Kerr metrics to identify the common characteristic among these different parametrizations that control the predicted shadow size. We show that the shadow-size measurements place significant constraints on deviation parameters that control the second post-Newtonian and higher orders of each metric and are, therefore, inaccessible to weak-field tests. The new constraints are complementary to those imposed by observations of gravitational waves from stellar-mass sources.