My recent work has centered on the particle acceleration, magnetic field generation, and associated with radiation related to gamma-ray bursts (GRB), which are the most powerful explosions known in the Universe. We have been investigating the evolution of relativistic jets which are involved with external shocks and internal shocks can account for the properties of the GRB emission (prompt and afterglows); these are currently the leading models for interpreting the observed spectra and light curves. These research has been performed with 3-D relativistic particle-in-cell simulations and the simulation results are also related to relativistic jets observed with Active Galactic Nucleus (AGN) and Blazars. Relativistic jets have been investigated with relativistic magmetohydrodynamic (RMHD) simulations. Among current interests are the GRB relation to its stellar progenitor and host environment, including the the collapsar/supernova scenario, the production mechanisms of X-ray lines and continuum, electron-positron pairs, the jet structure and collimation, the role of ultra-high (> TeV) energy neutrinos and GeV-TeV photons in GRB and active galaxies. The following link gives a snapshot view of the GRB, X-ray, and Cosmic Ray group and activities at NSSTC.
B.S., Physics, Nagoya University, Japan (1973)
M.S., Physics, Nagoya University, Japan (1975)
Ph.D., Physics, Nagoya University, Japan (1981)