4 papers
Unified Non-Singular Cosmology with Late-Time Acceleration through a Novel Parametrization of Bulk Viscosity Coefficient
Rajdeep Mazumdar, Mrinnoy M. Gohain, Kalyan Bhuyan
This work explores the influence of viscous fluids on cosmological dynamics within the framework of General Relativity. We introduce a novel time-dependent parametrization for the…
Modeling a Non-Singular Universe with Late-Time Acceleration through a Novel Inhomogeneous Barotropic Equation of State
Rajdeep Mazumdar, Mrinnoy M. Gohain, Kalyan Bhuyan
In this study, we investigated the effects of incorporating barotropic fluids on cosmological solutions within the general relativity (GR) framework. We proposed a modified version…
Frolov Black Hole Surrounded by Quintessence - II: Quasinormal Modes, Greybody Factors, Deflection Angle and Chaos Bound
Mrinnoy M. Gohain, Kalyan Bhuyan, Hari Prasad Saikia
In this work, we have examined the scalar quasinormal modes, greybody factors, weak gravitational lensing, and the chaos bound of a Frolov black hole surrounded by a quintessence f…
Cosmological Bounce Scenario with a Novel Parametrization of Bulk Viscosity
Rajdeep Mazumdar, Mrinnoy M. Gohain, Kalyan Bhuyan
In this work, we have studied how incorporating viscous fluids leads to exact bounce cosmological solutions in general relativity (GR) framework. Specifically, we propose a novel p…