195 citations · 416 across the 14 of their papers we have counts for
14 papers
Post-Newtonian orbital mechanics around a black hole in modified gravity
Ioannis Liodis, Gernot Heissel, Rita Mastroioanni +2
Scalar-tensor-vector gravity, also known as modified gravity (MOG), has emerged as an alternative to General Relativity (GR). It aims to explain astrophysical phenomena without inv…
Dark Matter reconstruction from stellar orbits in the Galactic Centre
Thibault Lechien, Gernot Heißel, Jai Grover +1
Context. Current constraints on distributed matter in the innermost Galactic Centre (such as a cluster of faint stars and stellar remnants, Dark Matter or a combination thereof) ba…
Multiple shadows from distorted static black holes
Jai Grover, Jutta Kunz, Petya Nedkova +2
We study the local shadow of the Schwarzschild black hole with a quadrupole distortion and the influence of the external gravitational field on the photon dynamics. The external ma…
Black Hole Shadows and Invariant Phase Space Structures
Jai Grover, Alexander Wittig
Utilizing concepts from dynamical systems theory, we demonstrate how the existence of light rings, or fixed points, in a spacetime will give rise to families of periodic orbits and…
Chaotic lensing around boson stars and Kerr black holes with scalar hair
P. V. P. Cunha, J. Grover, C. Herdeiro +3
In a recent letter, arXiv:1509.00021, it was shown that the lensing of light around rotating boson stars and Kerr black holes with scalar hair can exhibit chaotic patterns. Since n…
Supersymmetric AdS Black Rings
J. Grover, J. B. Gutowski, W. A. Sabra
It has been proven in arXiv:1303.0853 that all regular supersymmetric near-horizon geometries in minimal five-dimensional gauged supergravity admit automatic supersymmetry enhancem…