75 citations · 378 across the 23 of their papers we have counts for
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Formation and Stability of Area Quantized Black Holes
Kabir Chakravarti, Rajes Ghosh, Sudipta Sarkar
We investigate the ergoregion instability of area-quantized rotating quantum black holes (QBH) under gravitational perturbation. We show that the instability can be avoided in bina…
Hairy Black Holes: Non-existence of Short Hairs and Bound on Light Ring Size
Rajes Ghosh, Selim Sk, Sudipta Sarkar
Several hairy black hole solutions are known to violate the original version of the celebrated no-hair conjecture. This prompted the development of a new theorem that establishes a…
Does the speed of gravitational waves depend on the source velocity?
Rajes Ghosh, Sreejith Nair, Lalit Pathak +2
The second postulate of special relativity states that the speed of light in vacuum is independent of the emitter's motion. The test of this postulate so far remains unexplored for…
Quasi-normal modes of non-separable perturbation equations: the scalar non-Kerr case
Rajes Ghosh, Nicola Franchini, Sebastian H. Völkel +1
Scalar, vector and tensor perturbations on the Kerr spacetime are governed by equations that can be solved by separation of variables, but the same is not true in generic stationar…