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Effect of Electromagnetic Interaction on Galactic Center Flare Components

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    0536924 - ASÚ 2021 RIV US eng J - Journal Article
    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
    R&D Projects: GA ČR(CZ) GC19-01137J
    Institutional support: RVO:67985815
    Keywords : black hole physics * galactic center * galaxy accretion disks
    OECD category: Astronomy (including astrophysics,space science)
    Impact factor: 5.877, year: 2020
    Method of publishing: Limited access
    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.
    Permanent Link: http://hdl.handle.net/11104/0314678

     
     
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