98 citations · 198 across the 7 of their papers we have counts for
10 papers
Observational aspects of a class of Dark matter spacetimes
Ashok B. Joshi, Divya Tahelyani, Dipanjan Dey +1
Various astrophysical and cosmological observations today serve as an indirect evidence of the existence of dark matter in the universe. In the present work, we propose a class of…
Relativistic orbits of S2 star in the presence of scalar field
Parth Bambhaniya, Ashok B. Joshi, Dipanjan Dey +4
The general theory of relativity predicts the relativistic effect in the orbital motions of S-stars which are orbiting around our Milky-way galactic center. The post-Newtonian or h…
Lense-Thirring effect and precession of timelike geodesics in slowly rotating black hole and naked singularity spacetimes
Parth Bambhaniya, Jay S. Verma, Dipanjan Dey +2
In this paper, we investigate the properties of the Lense-Thirring precession frequency and periastron precession of the relativistic bound orbits in slowly rotating naked singular…
Comparing Shadows of Blackhole and Naked Singularity
Kanwar Preet Kaur, Pankaj S. Joshi, Dipanjan Dey +2
It is now theoretically well established that not only a black hole can cast shadow, but other compact objects such as naked singularities, gravastar or boson stars can also cast s…
Towards an observational test of black hole versus naked singularity at the galactic center
Dipanjan Dey, Pankaj S. Joshi, Ashok Joshi +1
While the event horizon of a black hole could cast a shadow that was observed recently, a central singularity without horizon could also give rise to such a feature. This leaves us…
Shadows and negative precession in non-Kerr spacetime
Parth Bambhaniya, Dipanjan Dey, Ashok B. Joshi +3
It is now known that the shadow is not only the property of a black hole, it can also be cast by other compact objects like naked singularities. However, there exist some novel fea…