16 citations · 53 across the 26 of their papers we have counts for
13 papers · 1 filter
On the Limitations of a Generalized Vaidya Metric
Soumya Chakrabarti, Naresh Dadhich, Chiranjeeb Singha
We prove that there can not be a smooth matching of the Generalized Vaidya metric with an exterior Schwarzschild/Vaidya patch across a finite boundary hypersurface unless the mass…
The Third Law of Black Hole Dynamics in Lovelock Gravity
Jyotirmoy De, Chiranjeeb Singha, Naresh Dadhich
The third law of black hole dynamics states that it is impossible, through any classical perturbation of a stationary configuration, to reduce the surface gravity of a black hole t…
Gravitational collapse and singularity avoidance of a homogeneous dust fluid on a brane with timelike extra dimension
Rikpratik Sengupta, Chiranjeeb Singha
We investigate the gravitational collapse of a homogeneous dust cloud in the Shtanov Sahni braneworld model, which incorporates an extra timelike dimension. The interior of the col…
Effect of dark matter halo environment on GW memory signal
Soumya Bhattacharya, Chiranjeeb Singha
In this paper, we study the gravitational wave (GW) memory effect for a black hole embedded in a dark matter halo described by a Hernquist-type density profile, both with and witho…
Emergence of Unruh prethermalization for uniformly accelerating many-atom system
Saptarshi Saha, Chiranjeeb Singha, Pragna Das +1
A uniformly accelerated atom in an inertial vacuum generally thermalizes and reaches a Gibbs state. This phenomenon is commonly known as the Unruh effect. Here, we show that the si…
Tidal Love numbers and quasi-normal modes of the ECO in a Dark Matter halo
Kabir Chakravarti, Chiranjeeb Singha
It is well-known that exotic compact objects (ECOs) are a class of objects categorised as Black Hole (BH) mimickers. ECOs have been shown to possess signatures distinguishing them…