I am a researcher in astrophysics, and I also enjoy doing web development and general-purpose programming (nope, not just numerical coding :). In this website, you will find information on my research, and also various online tools and software I made, which are mainly related to astronomy.
At present, I am a postdoctoral researcher at The Ohio State University (OSU), USA, and currently, I hold CCAPP postdoctoral fellowship. Earlier,…
Bose, S. et al., 2021, MNRAS, 503, 3472
ASASSN-18am/2018gk is a newly discovered member of the rare group of luminous, hydrogen-rich supernovae with a peak absolute magnitude of \(M_V \approx -20\) mag that is in between normal core-collapse SNe and superluminous SNe, which was also considered as a missing gap by some earlier studies. Only about five such supernovae have been identified so far, which also includes our previously discovered ASASSN-15nx (Bose, S. et al., 2018b, ApJ, 862, 107). The high intrinsic luminosity (without circumstellar interaction) of these supernovae makes it difficult or impossible to explain by widely accepted neutrino driven explosion mechanism. In this work, we examine various powering mechanisms, including radiative diffusion and magentar spindown models.…