Bonn 2020 – scientific programme
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GR: Fachverband Gravitation und Relativitätstheorie
GR 9: Black Holes 2
GR 9.2: Talk
Wednesday, April 1, 2020, 14:15–14:30, H-HS IX
The ISCO of charged particles — •Saskia Grunau1 and Kris Schroven2 — 1Institute of Physics, Carl-von-Ossietzky University, Oldenburg, Germany — 2Astronomical Institute, Czech Academy of Sciences, Prague, Czech Republic
The innermost stable circular orbit (ISCO) is defined by the smallest radius at which a test particle can move on a circular trajectory around a black hole. In accretion disk theory the ISCO is an important property of black holes, since it marks the inner edge of the accretion disk. In the Schwarzschild spacetime the ISCO is located at 6M, while in the Kerr spacetime the ISCO depends on the angular momentum of the black hole as well as on the direction of the angular momentum of the test particle. Here we will study the influence of the charge of a test particle on the ISCO in charged black hole spacetimes.