110 citations · 189 across the 7 of their papers we have counts for
7 papers
Shadow and Weak Gravitational lensing of rotating traversable Wormhole in Non-homogeneous Plasma Space-time
Saurabh Kumar, Akhil Uniyal, Sayan Chakrabarti
In this work, we have studied the behavior of null geodesics within a rotating wormhole space-time in non-magnetized pressure-less plasma. By focusing on the dispersion relation of…
What is flat ΛCDM, and may we choose it?
Stefano Anselmi, Matthew F. Carney, John T. Giblin +5
The Universe is neither homogeneous nor isotropic, but it is close enough that we can reasonably approximate it as such on suitably large scales. The inflationary--Cold Dark Mat…
Constraining Wormhole Geometries using the Orbit of S2 Star and the Event Horizon Telescope
Kimet Jusufi, Saurabh Kumar, Mustapha Azreg-Aïnou +3
In this paper we study the possibility of having a wormhole (WH) as a candidate for the Sgr A central object and test this idea by constraining their geometry using the mot…
Modelling the Sgr A* Black Hole Immersed in a Dark Matter Spike
Sourabh Nampalliwar, Saurabh K., Kimet Jusufi +3
In this paper, we investigate the effects of a dark matter (DM) spike on the neighborhood of Sgr A*, the black hole (BH) in the center of the Milky Way galaxy. Our main goal is to…
CMB Spectral Distortions from Cooling Macroscopic Dark Matter
Saurabh Kumar, Emanuela Dimastrogiovanni, Glenn D. Starkman +2
We propose a new mechanism by which dark matter (DM) can affect the early universe. The hot interior of a macroscopic DM, or macro, can behave as a heat reservoir so that energetic…
Could 1I/'Oumuamua be macroscopic dark matter?
David Cyncynates, Emanuela Dimastrogiovanni, Saurabh Kumar +2
1I/'Oumuamua, formerly known as A/2017 U1, is a sizable body currently passing through the solar system. It is generally considered to be a rocky asteroid-like object that came fro…