27 citations · 28 across the 4 of their papers we have counts for
7 papers
Excitation factors for horizonless compact objects: long-lived modes, echoes, and greybody factors
Romeo Felice Rosato, Shauvik Biswas, Sumanta Chakraborty +1
We present an analytical and numerical investigation of the quasinormal excitation factors of ultracompact horizonless objects. These systems possess long lived quasinormal modes w…
Greybody factors, reflectionless scattering modes, and echoes of ultracompact horizonless objects
Romeo Felice Rosato, Shauvik Biswas, Sumanta Chakraborty +1
Motivated by a recently discovered connection between the greybody factors of black holes and the ringdown signal, we investigate the greybody factors of ultracompact horizonless o…
Perturbations in the parametrized wormhole spacetime and their related quasinormal modes
Shauvik Biswas, Sayan Chakrabarti
We study electromagnetic perturbations and the associated quasinormal modes (QNMs) of parametrized static, spherically symmetric wormhole spacetimes, focusing on Damour-Solodukhin…
Can wormholes have vanishing Love numbers?
Shauvik Biswas
Wormholes are fascinating alternatives to black hole geometries. In this paper, we have studied a special case of wormhole solution in the context of spacetime. Our approxima…
Overcharging Extremal Rotating Black Holes
Shauvik Biswas, Amruta Sadhu, Sudipta Sarkar
In this work, we use the weak cosmic censorship conjecture(WCC) to constrain black hole solutions in modified gravity theories. While Wald showed that extremal Kerr-Newman black ho…
The Physics of Black Holes and Their Environments: Consequences for Gravitational Wave Science
Vitor Cardoso, Shauvik Biswas, Subhodeep Sarkar
Ten short years ago, we had the rare privilege of witnessing the onset of a renaissance in science: humanity finally succeeded in its arduous quest to directly detect gravitational…