Poster + Paper
23 August 2024 Black hole spacetime and properties of accretion flows and jets probed by Black Hole Explorer: science cases proposed by BHEX Japan team
Tomohisa Kawashima, Yuh Tsunetoe, Ken Ohsuga, Motoki Kino, Yosuke Mizuno, Kotaro Moriyama, Hiromi Saida, Kazunori Akiyama, Kazuhiro Hada, Kotaro Niinuma
Author Affiliations +
Conference Poster
Abstract
Black Hole Explorer (BHEX) is a space VLBI mission concept, which can probe the black hole spacetime and the plasma properties including the magnetic fields of the accretion flows and relativistic jets. We propose scientific inquiries anticipated to be addressed by EHE, primarily through the imaging of microarcsecond-scale signatures in target sources. An appearance of a crescent-shaped shadow in a bright state of the M87 will enable us to constrain the magnitude of the black hole spin (Kawashima et al. 2019). A possible appearance of the plasma injection region in the vicinity of the black hole results in the formation of the multiple ring structure and may enable us to understand the jet formation processes (Kawashima et al. 2021, and Ogihara et al. submitted to ApJ). In addition, the reversal of the sign of the circular polarization and the separation of linear and circular polarization flux peaks will constrain the magnetic field structure and the thermal properties of the electrons, respectively (Tsunetoe et al. 2021, 2022). Other topics, including potential scientific inquiries of luminous active galactic nuclei, will be also discussed.
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Tomohisa Kawashima, Yuh Tsunetoe, Ken Ohsuga, Motoki Kino, Yosuke Mizuno, Kotaro Moriyama, Hiromi Saida, Kazunori Akiyama, Kazuhiro Hada, and Kotaro Niinuma "Black hole spacetime and properties of accretion flows and jets probed by Black Hole Explorer: science cases proposed by BHEX Japan team", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130926X (23 August 2024); https://doi.org/10.1117/12.3018053
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KEYWORDS
Polarization

General relativity

Radio interferometry

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