München 2019 – wissenschaftliches Programm

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GR: Fachverband Gravitation und Relativitätstheorie

GR 16: GR and Astrophysics II

GR 16.2: Vortrag

Freitag, 22. März 2019, 11:45–12:00, HS 4

Charged fluids around black hole — •Trova Audrey — ZARM, University of Bremen

Studies of equilibrium of toroidal structures of a perfect fluid are important to understand the physics of accretion disks in active galactic nuclei (AGN). Our interest is about equilibrium of electrically charged-perfect fluid surrounding a rotating or non rotating compact object, embedded in magnetic field. The structure of the torus is influenced by the balance between the gravitational, the rotational and the magnetic force. Previous study of rotating charged test fluid around a non rotating black hole showed that according to the spin of the black hole the existence of such structures change. We focus on orbiting structures in the equatorial plane, as single or double tori, and structures above as levitating tori. Our interest is about their existence, shape and how the various forces (electromagnetic, centrifugal and gravitational) influence their physics.