activity
20112025
most citedAn HI column density threshold for cold gas formation in the Galaxy

54 citations · 57 across the 5 of their papers we have counts for

collaborators

5 papers

astro-ph.SR2025

Identification of recurrent novae from parametric modeling of the optical light curve

Rajarshi Barman, Nirupam Roy

Novae, characterized by sudden brightening in binary star systems, are categorized into classical novae (CNe) and recurrent novae (RNe) based on their recurrence timescales. Howeve…

astro-ph.EP2025

Observability of radio reflections from exoplanet ionospheres with next generation radio telescopes

Bhavesh Jaiswal, Nirupam Roy

Much has been learned about exoplanets and their atmospheres in the last three decades with the help of highly sensitive optical telescopes. Limited observations using X-ray telesc…

astro-ph.GA2025

Research on the Interstellar Medium and Star Formation in the Galaxy: An Indian Perspective

Bhaswati Mookerjea, Maheswar G., Kinsuk Acharyya +24

Although the star formation process has been studied for decades, many important aspects of the physics involved remain unsolved. Recent advancement of instrumentation in the infra…

astro-ph.GA2024★ 3 cited

Revisiting rotationally excited CH at radio wavelengths: A case study towards W51

Arshia M. Jacob, Meera Nandakumar, Nirupam Roy +7

Ever since they were first detected in the interstellar medium, the radio wavelength (3.3 GHz) hyperfine-structure splitting transitions in the rotational ground state of CH have b…

astro-ph.GA2011★ 54 cited

An HI column density threshold for cold gas formation in the Galaxy

Nissim Kanekar, Robert Braun, Nirupam Roy

We report the discovery of a threshold in the HI column density of Galactic gas clouds below which the formation of the cold phase of HI is inhibited. This threshold is at $N_{HI}…