8 citations · 44 across the 11 of their papers we have counts for
11 papers
Spherical accretion in giant elliptical galaxies: multi-transonicity, shocks, and implications on AGN feedback
Sananda Raychaudhuri, Shubhrangshu Ghosh, Partha S. Joarder
Isolated massive elliptical galaxies, or that are present at the center of cool-core clusters, are believed to be powered by hot gas accretion directly from their surrounding hot X…
Multiwavelength analysis of low surface brightness galaxies to study possible dark matter signature
Pooja Bhattacharjee, Pratik Majumdar, Mousumi Das +3
Low Surface Brightness (LSB) galaxies have very diffuse, low surface density stellar disks which appear faint in optical images. They are very rich in neutral hydrogen (HI) gas, wh…
Multi-transonic spherical-type flows around massive black holes: galactic potential induced standing isothermal shocks
Sananda Raychaudhuri, Shubhrangshu Ghosh, Partha S. Joarder
Accretion on length-scales of interstellar or even intergalactic is particularly relevant, in the context of spherical or quasi-spherical hot mode accretion, supposedly powering lo…
Analysis of Fermi-LAT data from Tucana-II: Possible constraints on the Dark Matter models with an intriguing hint of a signal
Pooja Bhattacharjee, Pratik Majumdar, Sayan Biswas +1
Tucana-II (Tuc-II), a recently discovered and confirmed Ultra Faint Dwarf Spheroidal galaxy, has a high mass to light ratio as well as a large line-of-sight stellar velocity disper…
Investigating the region of 3C 397 in High Energy Gamma rays
Pooja Bhattacharjee, Pratik Majumdar, Tulun Ergin +2
We investigate the supernova remnant (SNR) 3C 397 and its neighboring pulsar PSR J1906+0722 in high energy gamma rays by using nearly six years of archival data of {\it Large Area…
Constraints on dark matter models from the observation of Triangulum-II with the Fermi Large Area Telescope
Sayan Biswas, Pooja Bhattacharjee, Pratik Majumdar +3
Triangulum-II, a newly discovered dwarf spheroidal galaxy, is a strong candidate for the indirect search of dark matter through the detection of -ray emission that could origina…