Compact Object ASTrophysics

Dr Ritam Mallick

About Me:

I am a theoretical physicist, working as an Associate professor in the Department of Physics at the Indian Institute of Science Education and Research (IISER), Bhopal, India. I work in the area of nuclear astrophysics. My primary research focus is on neutron stars, binary neutron star mergers, gravitational waves and machine learning applications in astrophysics. You can explore this website to know about my academic timeline, my research interests, and my research group. Our research publications are documented in Inspire HEP, Google Scholar and Researchgate, which are linked below alongside my CV.

Academic Timeline

Research Topics

We have listed our ongoing and past research topics below. You can surf through them and click on the notebook button to check out the published (or preprint) results in these dedicated topics. Click on the play button to view the animations.

BINARY NEUTRON STAR MERGERS

We execute full 3D numerical relativity simulations of binary neutron star merger systems and seek signatures of astrophysical phase transitions in gravitational wave emissions.

OSCILLATION MODES

We study the radial and non-radial oscillation modes in neutron stars and their associated gravitational wave signatures, focusing on how they reveal the internal structure of the star

BAYESIAN ANALYSIS

We implement Bayesian inference techniques to extensively study the current status of equation of states of neutron stars in the context of astrophysical observations.

MACHINE LEARNING

We are implemeting the use of machine learning to study equation of states, speed of sound, and various other aspects of neutron stars.

EQUATION OF STATE

We have studied semi-empirical relations in the interior of neutron stars and are currently constraining the equation of state of neutron star using the limits on speed of sound in dense matter.

PHASE TRANSITION

We study the quark-hadron phase transitions in neutron stars and obtain the signatures like gravitational waves, gamma-ray bursts, etc.

GENERAL RELATIVISTIC SHOCKS

We study applications of GR shock-waves in astrophysical scenarios like shock induced phase transition in isolated neutron star.

Anim.mp4

MISALIGNMENT

We studied deformed magnetars considering GR corrections for misaligned stars and the acceleration of charged particles in rotating magnetars.

TIDAL DEFORMATIONS

We studied the coupling between the tidal field and the frame-dragging effects.

Teaching

PHY 416/616: General Theory of Relativity [Fall 2025] [Spring 2021] [Spring 2020]
PHY 404/610: Nuclear and Particle Physics [Spring 2025] [Spring 2019] [Spring 2017]
PHY 209: Electromagnetism [Fall 2024] [Fall 2023]
PHY 633/413: Introduction to Astronomy and Astrophysics [Spring 2024] [Fall 2019] [Spring 2018]
PHY 302: Mathematical Methods II [Spring 2023] [Spring 2022]
PHY 301: Mathematical Methods I [Fall 2022] [Fall 2021]
PHY 601: Advanced Mathematical Methods [Fall 2020]
PHY 305: Classical Mechanics [Fall 2018] [Fall 2017]
PHY 101: Mechanics [Fall 2016]
PHY 602: Advanced Classical Mechanics [Spring 2016]

Contact

Office: Room 8, Academic Building 1 (AB-1), IISER Bhopal, Madhya Pradesh, India

E-mail: mallick.at.iiserb.ac.in

Phone: +91 755 269 1205, 669 1205

Fax: +91 755 669 2392

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