HESS J1813–178 – no longer an unidentified TeV source
July 2005 In the survey of the central region of the Milky Way with the H.E.S.S. telescopes (Aharonian et al., 2005), eight previously unknown sources of very high energy gamma rays were discovered. For…
MSH 15-5 2 – a Pulsar Wind Nebula with a Jet
June 2005 The supernova remnant MSH 15-5 2 was first discovered in radio observations, and forms a rather complex object. Radio observations (Caswell et al. 1981) reveal a roughly circular supernova shell 30′ in diameter…
HESS J1303–631 – the mystery TeV source
May 2005 Observations of the binary pulsar PSR B1259-63 reveal, apart from a clear TeV gamma ray signal from the pulsar, a big surprise: a second source of TeV gamma rays about 0.5o north of…
TeV gamma rays from the Binary Pulsar PSR B1259–63
April 2005 PSR B1259-63/SS 2883 is a fairly unique system with a pulsar (PSR B1259-63) in a highly eccentric orbit around a massive Be star, SS 2883 (Johnston et al. 1992). The star is…
Another Shell-Type Supernova Remnant: RX J0852.0–4622 (“Vela Junior”)
March 2005 The supernova remnant RX J1713.7–3946 (SOM 2005-01) was the first remnant where the shell structure was detected in VHE gamma rays, demonstrating that the supernova shock wave accelerates particles. The detailed interpretation…
The Supernova Remnant G0.9+0.1: VHE gamma rays from the pulsar wind nebula
February 2005 Radio images of the Galactic Center region (see SOM 2004-12) include a number of shell-type supernova remnants. G0.9+0.1 is a composite remnant, showing a partial shell – about 8′ in diameter –…
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…
