Exploring the most violent phenomena in the Universe in VHE Gamma rays

Our universe hosts a diverse population of astrophysical gamma-ray sources. In our own Galaxy, we have supernova remnants, pulsar wind nebulae, gamma-ray binaries which are considered as likely candidates of cosmic ray accelerators. The observed electromagnetic photon spectra of these sources extend over a broad energy range from radio to all the way up to very high energy (VHE; E¿ 100 GeV) gamma rays. They are potential laboratories for studying high-energy processes, in particular, particle acceleration, radiation processes and the dynamics of the underlying magnetized flows. In addition to these sources, there are several unidentied TeV gamma-ray sources for which no counterparts at other wavelengths are found. The observed characteristics of these TeV sources are equally fascinating as those of the known classes of gamma-ray emitters. 

In this talk, I will show the results of our studies on some supernova remnants, gamma-ray binaries and implications of the pulsar wind nebula scenario for some unidentied gamma-ray sources. In addition, I shall briey discuss the recent results of the observations of star-forming regions in gamma rays.