Publications

2026

Universal Relations and Correlation Analysis of Proto-Neutron Star Properties in Energy-Momentum Squared Gravity

Sayantan Ghosh

arXiv:2602.02069

2026

Spacetime Curvature as a Probe of Exotic Core Phases in Neutron Stars within Modified Gravity

Sayantan Ghosh, Bharat Kumar, Subhash Mahapatra

Phys. Rev. D 113, 024070 (2026) arXiv:2508.08866

2026

Trace Anomaly and Interior Curvature of Neutron Stars in Energy-Momentum Squared Gravity

Ratikanta Swain, Sayantan Ghosh, Bharat Kumar

arXiv:2606.20203

2025

Effects of Asymmetric Dark Matter on a Magnetized Neutron Star: A Two-Fluid Approach

Pinku Routaray, Vishal Parmar, H. C. Das, Bharat Kumar, G. F. Burgio, H.-J. Schulze

Phys. Rev. D 111, 103045 (2025) arXiv:2412.21097 PDF

2025

Decoding Dark Matter Admixed Neutron Stars: From Static Structure to Rotational Deformation

Pinku Routaray, Abirbhav Chakrawarty, N. K. Patra, Bharat Kumar

Phys. Dark Univ. 50, 102093 (2025) arXiv:2409.02131 PDF

2025

Observable Signatures of a Quarkyonic Phase in Neutron Stars

Probit J Kalita, Tuhin Malik, Tianqi Zhao, Bharat Kumar, James M. Lattimer

arXiv:2510.23405

2025

The Role of Adiabatic Sound Speeds in Neutron Star Radial Oscillations and Stability

Sayantan Ghosh, Tianqi Zhao, Bharat Kumar, Sailesh Ranjan Mohanty

JCAP 09, 025 (2025)

2025

Constraining the f-Mode Oscillations Frequency in Neutron Stars through Universal Relations in the Realm of Energy-Momentum Squared Gravity

Sayantan Ghosh

Gen. Relativ. Gravit. 57, 70 (2025) arXiv:2412.20815

2025

Astrophysical Constraints on Neutron Star f-Modes with a Nonparametric Equation of State Representation

Sailesh Ranjan Mohanty, Utkarsh Mali, H.C. Das, Bharat Kumar, Philippe Landry

Phys. Rev. D 112, 123043 (2025) arXiv:2410.16689

2024

Probing the Impact of Delta-Baryons on Nuclear Matter and Non-Radial Oscillations in Neutron Stars

Probit Jyoti Kalita, Pinku Routaray, Sayantan Ghosh, Bharat Kumar, Bijay K. Agrawal

JCAP 04, 065 (2024) arXiv:2308.09008

2024

The Impact of Anisotropy on Neutron Star Properties: Insights from I–f–C Universal Relations

Sailesh Ranjan Mohanty, Sayantan Ghosh, Pinku Routaray, H C Das, Bharat Kumar

JCAP 03, 054 (2024) arXiv:2304.02439

2024

Exploring the Impact of the σ-Cut Scheme on Neutron Star Oscillations and Thermal Relaxations

Probit J. Kalita, Khokan Singha, Pinku Routaray, Bharat Kumar

Phys. Rev. C 110, 045807 (2024)

2023

★ Probing the Impact of WIMP Dark Matter on Universal Relations, GW170817 Posterior and Radial Oscillations

Pinku Routaray, Abdul Quddus, Kabir Chakravarti, Bharat Kumar

MNRAS 25, 5492 (2023)

2023

★ Radial Oscillations of Dark Matter Admixed Neutron Stars

Pinku Routray, H. C. Das, Souhardya Sen, Bharat Kumar, Grigoris Panotopoulos, Tianqi Zhao

Phys. Rev. D 107, 103039 (2023) arXiv:2211.12808

2023

Investigating Dark Matter-Admixed Neutron Stars with NITR EoS in Light of PSR J0952-0607

Pinku Routaray, Sailesh Ranjan Mohanty, H.C. Das, Sayantan Ghosh, P.J. Kalita, V. Parmar, Bharat Kumar

JCAP 10, 073 (2023) arXiv:2304.05100

2023

Dark Matter Admixed Neutron Star in the Light of HESS J1731-347 and PSR J0952-0607

Pinku Routaray, H C Das, Jeet Amrit Pattnaik, Bharat Kumar

arXiv:2307.12748

2023

Exploring the Macroscopic Properties and Nonradial Oscillations of Proto-Neutron Stars

Sayantan Ghosh, Shahebaj Shaikh, Probit J Kalita, Pinku Routaray, Bharat Kumar, B. K. Agrawal

Nucl. Phys. A 1008, 116697 (2024) arXiv:2307.06892

2023

Radial Oscillations in Neutron Stars from Unified Equation of States

Souhardya Sen, Shubham Kumar, Athul Kunjipurayil, Pinku Routaray, Sayantan Ghosh, Probit J. Kalita, Tianqi Zhao, Bharat Kumar

Galaxies 11, 60 (2023) arXiv:2205.02076

2023

Exploring Radial Oscillations in Slow Stable and Hybrid Neutron Stars

Sayantan Ghosh, Sailesh Ranjan Mohanty, Tianqi Zhao, Bharat Kumar

arXiv:2401.08347

2023

Theoretical Studies on Structural Properties and Decay Modes of Z=119 Isotopes

Asloob A. Rather, M. Ikram, Ishfaq A. Rather, A. A. Usmani, Bharat Kumar, K. P. Santhosh, S. K. Patra

Eur. Phys. J. Plus 138, 467 (2023) arXiv:1709.07311

2022

★ Impact of the Equation of State on f- and p-Mode Oscillations of Neutron Stars

Athul Kunjipurayil, Tianqi Zhao, Bharat Kumar, Bijay K. Agrawal, Madappa Prakash

Phys. Rev. D 106, 063005 (2022)

2022

Dark Matter Effects on the Compact Star Properties [Invited Review]

H C Das, Ankit Kumar, Bharat Kumar, S K Patra

Galaxies 10, 14 (2022)

2021

Universal Relations between the Quasinormal Modes of Neutron Stars and Tidal Deformability

Hajime Sotani, Bharat Kumar

Phys. Rev. D 104, 123002 (2021) arXiv:2109.08145

2021

The BigApple Force and Its Implications to Finite Nuclei and Astrophysical Objects

H C Das, Ankit Kumar, Bharat Kumar, S K Biswal, S K Patra

Int. J. Mod. Phys. E 30, 2150088 (2021) arXiv:2009.10690

2021

Impacts of Dark Matter on the Curvature of the Neutron Star

H C Das, Ankit Kumar, Bharat Kumar, S K Biswal, S K Patra

JCAP 01, 007 (2021) arXiv:2007.05382

2020

Warm Dense Matter and Cooling of Supernovae Remnants

Ankit Kumar, H C Das, S K Biswal, Bharat Kumar, S K Patra

Eur. Phys. J. C 80, 775 (2020)

2020

GW170817 Constraints on the Properties of a Neutron Star in the Presence of WIMP Dark Matter

Abdul Quddus, Grigorios Panotopoulos, Bharat Kumar, Shakeb Ahmad, S K Patra

J. Phys. G 47, 095202 (2020)

2020

Effects of Dark Matter on the Nuclear and Neutron Star Matter

H C Das, Ankit Kumar, Bharat Kumar, S K Biswal, Takashi Nakatsukasa, Ang Li, S K Patra

MNRAS 495, 4893 (2020)

2019

★ Inferring Neutron Star Properties from GW170817 with Universal Relations

Bharat Kumar, Philippe Landry

Phys. Rev. D 99, 123026 (2019)

2018

★ New Relativistic Effective Interaction for Finite Nuclei, Infinite Nuclear Matter, and Neutron Stars

Bharat Kumar, S K Patra, B K Agrawal

Phys. Rev. C 97, 045806 (2018)

2018

★ Constraints on the Moment of Inertia of PSR J0737-3039A from GW170817

Philippe Landry, Bharat Kumar

ApJ Letters 868, L22 (2018)

2018

GW170817: Constraining the Nuclear Matter EoS from the Neutron Star Tidal Deformability

Tuhin Malik, N. Alam, M. Fortin, C. Providencia, B. K. Agrawal, T. K. Jha, Bharat Kumar, S K Patra

Phys. Rev. C 98, 035804 (2018)

2017

New Parameterization of the Effective Field Theory Motivated Relativistic Mean-Field Model

Bharat Kumar, S. K. Singh, B. K. Agrawal, S. K. Patra

Nucl. Phys. A 966, 197 (2017)

2017

Tidal Deformability of Neutron and Hyperon Stars with Relativistic Mean-Field Equations of State

Bharat Kumar, S. K. Biswal, S. K. Patra

Phys. Rev. C 95, 015801 (2017)

2015

Examining the Stability of Thermally Fissile Th and U Isotopes

Bharat Kumar, S. K. Biswal, S. K. Singh, S. K. Patra

Phys. Rev. C 92, 054314 (2015)