The Supernova Remnant RX J1713.7–3946: High-energy particle acceleration in the shell of a supernova remnant
January 2005 Supernova remnants have long been suspected as the source of comic rays; they seem to be the only sources capable of supplying the energy required to feed the bulk of the cosmic…
The Galactic Center
December 2004 The Galactic Center region harbors a variety of potential sources of high-energy radiation, such as the supermassive black hole Sgr A* and a number of supernova remnants, among them the Sgr A…
The Active Galaxy PKS 2155–304
November 2004 At a redshift of 0.12, the Active Galactic Nucleus (AGN) PKS 2155-304 is one of the most distant well-established sources of TeV gamma rays, together with the source H 1426+428 at a…
The Crab Nebula
October 2004 Since its discovery as a TeV source by the Whipple telescope in 1989, the Crab Nebula serves as a standard candle for TeV astronomy and usually is one of the first targets…
