Publications

Publication Timeline [Inspire]

•   Postdoc, ICTS-TIFR (Aug, ’24 - Present)

  1. “Can Rotating Black Holes Have Short Hairs?”; R. Ghosh, C. Singha; arXiv: [gr-qc] (accepted in Physical Review D). 

  2. “Probing Spacetime Symmetries Using Gravitational Wave Ringdown”; R. Ghosh, A. K. Mishra, S. Sarkar; arXiv: 2412.08942 [gr-qc] (under review).

  3. “Birkhoff's Theorem and Uniqueness: A Peak Beyond General Relativity”; R. Ghosh, A. K. Mishra, A. Chowdhury; arXiv: 2411.09193 [gr-qc] (under review).

  4. Restoring Causality in Higher Curvature Gravity”; J. Edelstein, R. Ghosh, A. Laddha, S. Sarkar; arXiv: 2409.16935 [hep-th] (under review).

•   Ph.D., IIT Gandhinagar (Aug, ’19 - Jul, ’24)

  1. “Parameterized Non-circular Deviation from the Kerr Paradigm and Its Observational Signatures: Extreme Mass Ratio Inspirals and Lense-Thirring Effect”; R. Ghosh, K. Chakravarti; arXiv: 2406.02454 [gr-qc] (under review).

  2. “Exploring ladder symmetry and Love numbers for static and rotating black holes”; C. Sharma, R. Ghosh, S. Sarkar; arXiv: 2401.00703 [gr-qc]; Phys. Rev. D 109 (2024) 4, L041505 (Letter).

  3. “Formation and Stability of Area Quantized Black Holes”; K. Chakravarti, R. Ghosh, S. Sarkar; arXiv: 2310.18022 [gr-qc]; Phys. Rev. D 109 (2024) 4, 046001.

  4. “Hairy Black Holes: Non-existence of Short Hairs and Bound on Light Ring Size”; R. Ghosh,  Selim Sk, S. Sarkar; arXiv: 2306.14193 [gr-qc]; Phys. Rev. D 108 (2023) 4, L041501 (Letter). 

  5. “Does the speed of gravitational waves depend on the source velocity?”; R. Ghosh, S. Nair, L. Pathak, S. Sarkar, A. Sengupta; arXiv: 2304.14820 [gr-qc]; Phys. Rev. D 108 (2023) 12, 124017.

  6. “Quasi-normal modes of non-separable perturbation equations: the scalar non-Kerr case”; R. Ghosh, N. Franchini, S. Volkel, E. Barausse; arXiv: 2303.00088 [gr-qc]; Phys. Rev. D 108 (2023) 2, 024038.

  7. “Regularized Stable Kerr Black Hole: Cosmic Censorships, Shadow and Quasi-Normal Modes”; R. Ghosh, M. Rahman, A. K. Mishra; arXiv: 2209.12291 [gr-qc]; Eur. Phys. J. C 83 (2023) 1, 91.

  8. “Constraining the Topological Gauss-Bonnet Coupling from GW150914”; K. Chakravarti, R. Ghosh, S. Sarkar; arXiv: 2201.08700 [gr-qc]; Phys. Rev. D 106 (2022) 4, L041503 (Letter).

  9. “Signature of Non-Uniform Area Quantization on Black Hole Echoes’’; K. Chakravarti, R. Ghosh, S. Sarkar; arXiv: 2112.10109 [gr-qc]; Phys. Rev. D 105 (2022) 4, 044046.

  10. “Signature of Non-Uniform Area Quantization on Gravitational Waves’’; K. Chakravarti, R. Ghosh, S. Sarkar; arXiv: 2108.02444 [gr-qc]; Phys. Rev. D 104 (2021) 8, 084049 . 

  11. “Light Rings of Stationary Spacetimes’’; R. Ghosh, S. Sarkar; arXiv: 2107.07370 [gr-qc]; Phys. Rev. D 104 (2021) 4, 044019 .

  12. “Causality Constraints in Quadratic Gravity’’; J. D. Edelstein, R. Ghosh, A. Laddha, S. Sarkar; arXiv: 2107.07424 [hep-th]; J. High Energ. Phys. 2021, 150 (2021) c .

  13. “Overcharging Extremal Black Holes’’; R. Ghosh, A. K. Mishra, S. Sarkar; arXiv: 2106.10667 [gr-qc]; Phys. Rev. D 104 (2021) 10, 104043.

  14. “Black Hole Zeroth Law in Higher Curvature Gravity”; R. Ghosh, S. Sarkar; arXiv: 2009.01543 [gr-qc]; Phys. Rev. D 102 (2020) 10, 101503 (Rapid Communication).

•   M.Sc., IIT Gandhinagar (Aug, ’17- Jul, ’19)

  1. “Overcharging higher curvature black holes”; R. Ghosh, C. Fairoos, S. Sarkar; arXiv: 1906.08016 [gr-qc]; Phys. Rev. D 100 (2019) 12, 124019 .