75 citations · 378 across the 23 of their papers we have counts for
5 papers · 1 filter
Signature of Non-uniform Area Quantization on Black Hole Echoes
Kabir Chakravarti, Rajes Ghosh, Sudipta Sarkar
A classical black hole is characterized by a horizon that absorbs radiation of all frequencies incident on it. Perturbation of these black holes is well-understood via exponentiall…
Signature of Non-uniform Area Quantization on Gravitational Waves
Kabir Chakravarti, Rajes Ghosh, Sudipta Sarkar
Quantum aspects of black holes may have observational imprints on their absorption and emission spectrum. In this work, we consider the possibility of non-uniform area quantization…
Causality constraints in Quadratic Gravity
Jose D. Edelstein, Rajes Ghosh, Alok Laddha +1
Classifying consistent effective field theories for the gravitational interaction has recently been the subject of intense research. Demanding the absence of causality violation in…
Light rings of stationary spacetimes
Rajes Ghosh, Sudipta Sarkar
We present a novel theorem regarding light rings in a stationary spacetime with an ergoregion. We prove that any stationary, axisymmetric, and asymptotically flat spacetime in 1 +…
Overcharging Extremal Black Holes
Rajes Ghosh, Akash K Mishra, Sudipta Sarkar
The Weak Cosmic Censorship (WCC) conjecture can be used as a consistency criterion for any viable modification over general relativity (GR). We employ this idea to show that in con…