Würzburg 2018 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 6: Relativistic astrophysics II

GR 6.4: Talk

Wednesday, March 21, 2018, 15:00–15:20, NW-Bau - HS3

Equilibrium of a charged perfect fluid around a Kerr black hole in a dipole magnetic test field: Role of the spin — •Kris Schroven, Audrey Trova, Eva Hackmann, and Claus Lämmerzahl — University of Bremen, Center of Applied Space Technology and Microgravity (ZARM), 28359 Bremen, Germany

Analytical descriptions of accretion discs - such as the thick disc model- can help to deepen the understanding of the physics involved in this structures. Here, we will analytically discuss the structures formed by a charged ideal fluid, surroundling a rotating black hole (BH) with a magnetic dipole test-field. These formed structures are then influenced by the balance between the gravitational and magnetic forces. The test field will be oriented along the spin-axis. Furthermore rigid rotation of the fluid around the BH is assumed. We will focus on how the black hole spin influences the structure and position of the equilibrium configurations of the fluid. We will see, that the black hole spin plays a crucial role in the existence of equilibrium configurations of the fluid along the spin axis.