Constraining the charge of the Galactic centre black hole

0522266 - ASÚ 2020 RIV GB eng C - Conference Paper (international conference)
Zajaček, M. - Tursunov, A. - Eckart, A. - Britzen, S. - Hackmann, E. - Karas, Vladimír - Stuchlík, Z. - Czerny, B. - Zensus, J. A.
Constraining the charge of the Galactic centre black hole.
Journal of Physics: Conference Series. Vol. 1258. Bristol: IOP Publishing, 2019, č. článku 012031. E-ISSN 1742-6596.
[Sharjah International Conference on Particle Physics, Astrophysics and Cosmology /1st/. SharjahSharjah (AE), 11.11.2018-13.11.2018]
Institutional support: RVO:67985815
Keywords : cosmology * electric charge * astrophysical plasma
OECD category: Astronomy (including astrophysics,space science)

In this contribution, we summarize our results concerning the observational constraints on the electric charge associated with the Galactic centre black hole - Sgr A∗. According to the no-hair theorem, every astrophysical black hole, including supermassive black holes, is characterized by at most three classical, externally observable parameters - mass, spin, and the electric charge. While the mass and the spin have routinely been measured by several methods, the electric charge has usually been neglected, based on the arguments of efficient discharge in astrophysical plasmas.
Permanent Link: http://hdl.handle.net/11104/0306788