Speaker
Misbah Shahzadi
(COMSATS University Islamabad, Pakistan)
Description
We are fitting dynamics of electrically neutral hot-spot orbiting around Sagittarius A* source in Galactic centre, represented by various modifications of the standard Kerr black hole, to the three flares observed by the GRAVITY instrument. We consider stationary, axisymmetric, and asymptotically flat spacetimes describing charged black holes in general relativity combined with nonlinear electrodynamics, or reflecting the influence of dark matter, or in so-called parameterized dirty Kerr spacetimes, and test them using the hot-spot data.
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Primary authors
Misbah Shahzadi
(COMSATS University Islamabad, Pakistan)
Martin Kološ
(Institute of Physics, Silesian University in Opava)
Zdeněk Stuchlík