Constraints on black-hole charges with the 2017 EHT observations of M87∗

Prashant Kocherlakota; Luciano Rezzolla; Heino Falcke; Christian M. Fromm; Michael Kramer; Yosuke Mizuno; Antonios Nathanail; Héctor Olivares; Ziri Younsi; Kazunori Akiyama; Antxon Alberdi; Walter Alef; Juan Carlos Algaba; Richard Anantua; Keiichi Asada; Rebecca Azulay; Anne Kathrin Baczko; David Ball; Mislav Baloković; John Barrett; Bradford A. Benson; Dan Bintley; Lindy Blackburn; Raymond Blundell; Wilfred Boland; Katherine L. Bouman; Geoffrey C. Bower; Hope Boyce; Michael Bremer; Christiaan D. Brinkerink; Roger Brissenden; Silke Britzen; Avery E. Broderick; Dominique Broguiere; Thomas Bronzwaer; Do Young Byun; John E. Carlstrom; Andrew Chael; Chi Kwan Chan; Shami Chatterjee; Koushik Chatterjee; Ming Tang Chen; Yongjun Chen; Paul M. Chesler; Ilje Cho; Pierre Christian; Dong Jin Kim; Venkatessh Ramakrishnan; Tuomas Savolainen; Jan Wagner; Event Horizon Telescope Collaboration

doi:10.1103/PhysRevD.103.104047

Constraints on black-hole charges with the 2017 EHT observations of M87∗

Prashant Kocherlakota, Luciano Rezzolla, Heino Falcke, Christian M. Fromm, Michael Kramer, Yosuke Mizuno, Antonios Nathanail, Héctor Olivares, Ziri Younsi, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Anne Kathrin Baczko, David Ball, Mislav Baloković, John BarrettBradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Wilfred Boland, Katherine L. Bouman, Geoffrey C. Bower, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, Silke Britzen, Avery E. Broderick, Dominique Broguiere, Thomas Bronzwaer, Do Young Byun, John E. Carlstrom, Andrew Chael, Chi Kwan Chan, Shami Chatterjee, Koushik Chatterjee, Ming Tang Chen, Yongjun Chen, Paul M. Chesler, Ilje Cho, Pierre Christian, Dong Jin Kim, Venkatessh Ramakrishnan, Tuomas Savolainen, Jan Wagner, Event Horizon Telescope Collaboration

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Abstract

Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M87∗ shadow size to infer constraints on the physical charges of a large variety of nonrotating or rotating black holes. For example, we show that the quality of the measurements is already sufficient to rule out that M87∗ is a highly charged dilaton black hole. Similarly, when considering black holes with two physical and independent charges, we are able to exclude considerable regions of the space of parameters for the doubly-charged dilaton and the Sen black holes.

Original language	English
Article number	104047
Number of pages	18
Journal	Physical Review D
Volume	103
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevD.103.104047
Publication status	Published - 20 May 2021
MoE publication type	A1 Journal article-refereed

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Kocherlakota, P., Rezzolla, L., Falcke, H., Fromm, C. M., Kramer, M., Mizuno, Y., Nathanail, A., Olivares, H., Younsi, Z., Akiyama, K., Alberdi, A., Alef, W., Algaba, J. C., Anantua, R., Asada, K., Azulay, R., Baczko, A. K., Ball, D., Baloković, M., ... Event Horizon Telescope Collaboration (2021). Constraints on black-hole charges with the 2017 EHT observations of M87∗. Physical Review D, 103(10), Article 104047. https://doi.org/10.1103/PhysRevD.103.104047

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abstract = "Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M87∗ shadow size to infer constraints on the physical charges of a large variety of nonrotating or rotating black holes. For example, we show that the quality of the measurements is already sufficient to rule out that M87∗ is a highly charged dilaton black hole. Similarly, when considering black holes with two physical and independent charges, we are able to exclude considerable regions of the space of parameters for the doubly-charged dilaton and the Sen black holes. ",

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Kocherlakota, P, Rezzolla, L, Falcke, H, Fromm, CM, Kramer, M, Mizuno, Y, Nathanail, A, Olivares, H, Younsi, Z, Akiyama, K, Alberdi, A, Alef, W, Algaba, JC, Anantua, R, Asada, K, Azulay, R, Baczko, AK, Ball, D, Baloković, M, Barrett, J, Benson, BA, Bintley, D, Blackburn, L, Blundell, R, Boland, W, Bouman, KL, Bower, GC, Boyce, H, Bremer, M, Brinkerink, CD, Brissenden, R, Britzen, S, Broderick, AE, Broguiere, D, Bronzwaer, T, Byun, DY, Carlstrom, JE, Chael, A, Chan, CK, Chatterjee, S, Chatterjee, K, Chen, MT, Chen, Y, Chesler, PM, Cho, I, Christian, P, Kim, DJ, Ramakrishnan, V , Savolainen, T, Wagner, J & Event Horizon Telescope Collaboration 2021, 'Constraints on black-hole charges with the 2017 EHT observations of M87∗', Physical Review D, vol. 103, no. 10, 104047. https://doi.org/10.1103/PhysRevD.103.104047

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AU - Kocherlakota, Prashant

AU - Rezzolla, Luciano

AU - Falcke, Heino

AU - Fromm, Christian M.

AU - Kramer, Michael

AU - Mizuno, Yosuke

AU - Nathanail, Antonios

AU - Olivares, Héctor

AU - Younsi, Ziri

AU - Akiyama, Kazunori

AU - Alberdi, Antxon

AU - Alef, Walter

AU - Algaba, Juan Carlos

AU - Anantua, Richard

AU - Asada, Keiichi

AU - Azulay, Rebecca

AU - Baczko, Anne Kathrin

AU - Ball, David

AU - Baloković, Mislav

AU - Barrett, John

AU - Benson, Bradford A.

AU - Bintley, Dan

AU - Blackburn, Lindy

AU - Blundell, Raymond

AU - Boland, Wilfred

AU - Bouman, Katherine L.

AU - Bower, Geoffrey C.

AU - Boyce, Hope

AU - Bremer, Michael

AU - Brinkerink, Christiaan D.

AU - Brissenden, Roger

AU - Britzen, Silke

AU - Broderick, Avery E.

AU - Broguiere, Dominique

AU - Bronzwaer, Thomas

AU - Byun, Do Young

AU - Carlstrom, John E.

AU - Chael, Andrew

AU - Chan, Chi Kwan

AU - Chatterjee, Shami

AU - Chatterjee, Koushik

AU - Chen, Ming Tang

AU - Chen, Yongjun

AU - Chesler, Paul M.

AU - Cho, Ilje

AU - Christian, Pierre

AU - Kim, Dong Jin

AU - Ramakrishnan, Venkatessh

AU - Savolainen, Tuomas

AU - Wagner, Jan

AU - Event Horizon Telescope Collaboration

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JO - Physical Review D

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Constraints on black-hole charges with the 2017 EHT observations of M87∗

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Constraints on black-hole charges with the 2017 EHT observations of M87∗

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NT-VGOS: From quasars to geodesy: how astronomy can enable a new era in ultra-precise geodetic measurements

Physics of Black Hole-Powered Jets

Physics of Black Hole-Powered Jets

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Metsähovi Radio Observatory

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