Research Interest (s) : Accretion onto Astrophysical bodies plays an important role in astrophysics and cosmology, on both small and large scales. On small scales, accreting compact objects emit radiation in different energy bands. They show variability in both temporal and spatial domains. The variability may depend on accretion, raising a range of questions. What causes the fluctuation in mass accretion rate in the accretion disk of both low mass and supermassive black holes? How different physical processes are responsible for the origin of Quasi Periodic Oscillations (QPOs)? What is the role of the spin parameter in launching jets? I am working on different facets of accretion and ejection around compact objects including the variability properties in Active Galactic Nuclei. My aim is to find a self-consistent explanation between jet launching, spectral state transition, the origin of QPOs , and changing coronal properties. On the extreme end of large scales, the physics of accretion onto large-scale bodies is a hot new topic. My recent study includes Fermi Bubbles, their origin, and morphology in our Galaxy through numerical simulation using PLUTO. In parallel, I am also examining shocks and cold fronts in different galaxy clusters using X-ray imaging from Chandra observation.

Selected Publications (s)

• Fermi bubbles: the collimated outburst needed to explain forward-shock edgesSantanu Mondal, Uri Keshet, Kartick C. Sarkar, Ilya Gurwich
• Spectral signature of mass outflow in Two Component Advective Flow ParadigmSantanu Mondal, Sandip K. Chakrabarti
• Effect of turbulent pressure on the origin of low-frequency quasi-periodic oscillations in rotating black holesSantanu Mondal