Although I tend to be fascinated by all astrophysical puzzles, here
are some of my main research interests.
Plasma Astrophysics: Origin and
Impact of Magnetic Fields in the Universe; Production (dynamo) of magnetic
fields in Active Galactic Nuclei; formation and transport of large scale
force-free helix/jets; dissipation of magnetic field energy; Galaxy cluster
magnetic fields.
Fluid Dynamics of Accretion Flows:
Various waves and instabilities in inviscid flows and their role in understanding
the angular momentum transport in accretion disks; Linear theory and nonlinear
hydro. simulations of Rossby vortices in accretion disks.
Kinetic Theory: Linear
Vlasov theory of micro-instabilities of e-p and e^{\pm} pair
plasmas; Quasilinear theory of wave-particle resonant interactions; Particle-in-cell
and Hybrid codes simulations of space and astrophysical plasmas, including
transit-time damping, firehose, electron beam, heat flux instabilities;
PIC simulations of lower hybrid wave instability and magnetic reconnection.
Particle Acceleration and Radiation
Processes: Stochastic particle acceleration by plasma waves, and
modeling the X- and gamma-ray radiation from black hole accretion disks
using Monte Carlo simulations and numerical solutions of time-dependent
kinetic equations for waves, particles and photons; modeling the multiwavelength
variabilities of Gamma-ray AGNs; Radiative acceleration of Galactic superluminal
jets.
Gamma Ray Bursts: Statistical,
spatial and temporal analyses of burst data; Search for X-ray flashes from
nearby galaxies; High velocity neutron star model for GRBs, and mechanisms
of GRBs and SGRs.
Neutron Stars: Structure
of magnetosphere and relativistic pulsar winds.
