Nuclear Astrophysics & Physics

Probing the densest objects in the universe

We are a research group at the National Institute of Technology, Rourkela, India, studying neutron star physics, dark matter, and multi-messenger astrophysics.

4
Research themes
3
PhD students
2020
Founded
Neutron star mass-radius diagram

Focus Areas

What we study

Equation of State

Deciphering the composition of dense matter inside neutron stars — what they are made of and how matter behaves at nuclear densities.

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Hyperons in Neutron Stars

Exploring strangeness-bearing particles (hyperons) at the core of massive neutron stars and their effect on stellar properties.

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Thermal Evolution

Investigating how the internal temperature of isolated and accreting neutron stars evolves over cosmic timescales.

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Dark Matter Constraints

Using neutron star observations to constrain dark matter — uncovering potential signatures and interactions in these cosmic laboratories.


People

Our team

PI
Bharat Kumar

Bharat Kumar

Assistant Professor · since 2020
CV ↗

PhD Students

Pinku Routaray

Pinku Routaray

PhD Student · joined 2021
Dark Matter in NSs
Sayantan Ghosh

Sayantan Ghosh

PhD Student · joined 2022
Quasinormal Modes
Probit J. Kalita

Probit J. Kalita

PhD Student · joined 2022
NS Composition

Master Students

KK

Kanika Karan

MSc Thesis
Quasinormal Modes
SS

Shubhajit Saha

MSc Thesis
Quarkyonic Matter
View all team members & alumni →

Updates

News

23 Dec 2024

Congrats to Pinku for Best Poster Award at DAE High Energy Physics Symposium, BHU — see event ↗

1 Sep 2023

Pinku's paper accepted in MNRAS ↗

Jun 2020

NAP Lab established at NIT Rourkela under Dr. Bharat Kumar.

All news →

Selected Output

Recent publications

2024

Dark matter effects on neutron star properties from a relativistic mean-field approach

Routaray, Kumar et al. · MNRAS

2023

Quasinormal modes and tidal deformability of neutron stars

Ghosh, Kumar et al.

2023

Hyperons and the hyperon puzzle in dense nuclear matter

Kalita, Kumar et al.

Full publication list →

We are looking for passionate PhD and Master students to join the team. Open positions in neutron star physics, dark matter, and nuclear astrophysics.

See openings →

Contact

MC202, Department of Physics and Astronomy
National Institute of Technology, Rourkela
Odisha 769008, India

kumarbh@nitrkl.ac.in
View on Maps ↗

Funding & Affiliations

Supported by the Science and Engineering Research Board (SERB), Government of India.

Part of the Department of Physics and Astronomy at NIT Rourkela.

NIT Rourkela SERB