9 citations · 31 across the 10 of their papers we have counts for
10 papers
Cosmological perturbations with gravity scalarons : Galaxy power spectra and the scalaron mass
Abhijit Talukdar, Sanjeev Kalita, Shadab Alam
In this paper we study cosmological perturbations with gravity scalaron. We consider epoch of transition from early general relativity (GR) phase to late time non-GR phase o…
Probing dark matter distributions with the pericentre precession of the stellar orbits near the Galactic Centre black hole
Debojit Paul, Sanjeev Kalita
The Galactic Centre black hole provides a naive environment for understanding unknown matter distribution and new gravitational physics. For this stellar orbits in the nuclear star…
Unscreening of f(R) gravity near the galactic center black hole: Testability through pericenter shift below S0-2's orbit
Debojit Paul, Sanjeev Kalita, Abhijit Talukdar
General Relativity (GR) has been tested extensively in the solar system and is being tested in the new environment of the Galactic Centre (GC) black hole where the dimensionless gr…
Seeds of supermassive black holes in general relativistic and alternative cosmologies: Implications of massive seeds
Nirmali Das, Sanjeev Kalita, Ankita Kakati
Presence of supermassive black holes (SMBHs) with mass at has been recently revealed by James Webb Space Telescope (JWST) observations. In this…
General relativistic limit of f(R) gravity in the horizon scale of black hole
Pranjali Bhattacharjee, Sanjeev Kalita, Debojit Paul +1
The environment of the Galactic Centre (GC) black hole, Sgr A* gives us new opportunities to test black hole physics and deviation from General Relativity. In this analytical study…
gravity in the solar system and cosmological scalarons
Debojit Paul, Sanjeev Kalita
Since last two decades gravity theory has been extensively used as a serious alternative of general relativity to mimic the effects of dark energy. The theory presents a Yuk…
Big Bang Nucleosynthesis with gravity scalarons and astrophysical consequences
Abhijit Talukdar, Sanjeev Kalita
gravity is one of the serious alternatives of general relativity having a large range of astronomical consequences. In this work, we study Big Bang Nucleosynthesis (BBN) in…
Kerr-scalaron metric and astronomical consequences near the Galactic Center black hole
Debojit Paul, Pranjali Bhattacharjee, Sanjeev Kalita
Astronomical tests of spacetime metric and gravitation theory near the Galactic Center (GC) black hole, Sgr A* have gained momentum with the observations of compact stellar orbits…
Constraining primordial black hole masses through gravity scalarons in Big Bang Nucleosynthesis
Abhijit Talukdar, Sanjeev Kalita, Nirmali Das +1
Big Bang Nucleosynthesis (BBN) is a strong probe for constraining new physics including gravitation. gravity theory is an interesting alternative to general relativity which…
Prospects of relativistic astrophysics: Viewpoints on the most influential journey
Sanjeev Kalita
Based on several recent developments in relativistic astrophysics and observational cosmology, this article discusses prospects of (1) theoretical structure of General Relativity (…