8 papers
Testing selectively enhanced QCD axions couplings as an explanation of the RX J1856.5-3754 hard X-ray excess
Charul Rathod, Madhukar Mishra, P. K Das
We explore the possibility of explaining hard X-ray data obtained from one of the Magnificent Seven (M7) neutron-stars (NSs) employing QCD axion-converted photons. The emission of…
Bayesian Constraints on Inverse-Tangent Inflation with Constant-EOS Reheating and a Dynamical Reheating Analysis
Mayur Abhisheki, Prasanta Kumar Das
We perform a Bayesian inference analysis of an inflationary model based on an inverse-tangent potential, incorporating reheating dynamics in both constant and dynamical equation-of…
First Constraints on the Ellipticities of Self-Interacting Fermionic Dark Matter Admixed Neutron Stars from Continuous Gravitational-Wave Searches
Premachand Mahapatra, Andrew L. Miller, Prasanta Kumar Das
We investigate continuous gravitational-wave (CW) emission from rapidly rotating, non-axisymmetric, isolated neutron stars admixed with self-interacting fermionic dark matter (DM)…
Impacts of {} gravity on neutron stars study within the relativistic mean-field model framework in light of GW170817, Pulsars and NICER data
Premachand Mahapatra, Prasanta Kumar Das
In this work, we investigate the neutron star structure in conservative gravity with , where denotes the matter--geometry coupling. The modified stell…
Thermal Evolution of Magnetars under f(R, T) Gravity
Charul Rathod, M. Mishra, Prasanta Kumar Das +1
The present study explores the thermal evolution and emission properties of neutron stars within the framework of modified gravity by solving the coupled energy-balance a…
Reheating and Inflationary dynamics driven by an inverse tangent potential
Mayur Abhisheki, Prasanta Kumar Das
In this work, we study the early universe inflation and the post-inflation reheating era employing an inverse tangent potential of the form $V=V_0 \cdot[tan^{-1}(\frac{κÏ}{m_p})]…