Effect of Electromagnetic Interaction on Galactic Center Flare Components

0536924 - ASÚ 2021 RIV US eng J - Článek v odborném periodiku
Tursunov, A. - Zajaček, M. - Eckart, A. - Kolos, M. - Britzen, S. - Stuchlík, Z. - Czerny, B. - Karas, Vladimír
Effect of Electromagnetic Interaction on Galactic Center Flare Components.
Astrophysical Journal. Roč. 897, č. 1 (2020), č. článku 99. ISSN 0004-637X. E-ISSN 1538-4357
Grant CEP: GA ČR(CZ) GC19-01137J
Institucionální podpora: RVO:67985815
Klíčová slova: black hole physics * galactic center * galaxy accretion disks
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 5.877, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.3847/1538-4357/ab980e

Applying various approaches, we find the net charge number density of the flare components of the order of 10(-3)-10(-4)cm(-3), while the particles' total number density is of the order of 10(6)-10(8)cm(-3). However, even such a tiny excess of charged particles in the quasi-neutral plasma can significantly affect the dynamics of flare components, which can then lead to the degeneracy in the measurements of spin of the SMBH. Analyzing the dynamics of recent flares in the case of the rapidly rotating black hole, we also constrain the inclination angle between the magnetic field and spin axis to alpha < 50 degrees, as for larger angles, the motion of the hot spot is strongly chaotic.
Trvalý link: http://hdl.handle.net/11104/0314678