Discovery of a VHE gamma-ray source coincident with the supernova remnant CTB 37A
Aims: The supernova remnant (SNR) complex CTB 37 is an interesting candidate for observations with very high energy (VHE) γ-ray telescopes such as HESS. In this region, three SNRs are seen. One of them…
HESS upper limits for Kepler’s supernova remnant
Aims: Observations of Kepler’s supernova remnant (G4.5+6.8) with the HESS telescope array in 2004 and 2005 with a total live time of 13 h are presented. Methods: Stereoscopic imaging of Cherenkov radiation from extensive…
Chandra and HESS observations of the supernova remnant CTB 37B
We discovered the >100 GeV γ-ray source, HESS J1713-381, apparently associated with the shell-type supernova remnant (SNR) CTB 37B, using HESS in 2006. In 2007 we performed X-ray follow-up observations with Chandra with the aim of identifying…
Exploring a SNR/molecular cloud association within HESS J1745–303
Aims. HESS J1745-303 is an extended, unidentified VHE (very high energy) gamma-ray source discovered using HESS in the Galactic Plane Survey. Since no obvious counterpart has previously been found in longer-wavelength data, the processes that power the…
Discovery of very-high-energy γ-ray emission from the vicinity of PSR J1913+1011 with HESS
The HESS experiment, an array of four Imaging Atmospheric Cherenkov Telescopes with high sensitivity and large field-of-view, has been used to search for emitters of very-high-energy (VHE, >100 GeV) γ-rays along the Galactic plane,…
Discovery of VHE γ-rays from the high-frequency-peaked BL Lacertae object RGB J0152+017
Aims: The BL Lac object RGB J0152+017 (z=0.080) was predicted to be a very high-energy (VHE; >100 GeV) γ-ray source, due to its high X-ray and radio fluxes. Our aim is to understand the…
Discovery of very high energy gamma-ray emission coincident with molecular clouds in the W 28 (G6.4-0.1) field
Aims: Observations of shell-type supernova remnants (SNRs) in the GeV to multi-TeV γ-ray band, coupled with those at millimetre radio wavelengths, are motivated by the search for cosmic-ray accelerators in our Galaxy. The old-age…
Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal
Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out with the HESS array of four imaging air Cherenkov telescopes in June 2006. A total of 11 h of high quality data…
Upper limits from HESS active galactic nuclei observations in 2005–2007
Aims: Very high energy (VHE; E>100 GeV) γ-ray studies were performed for 18 active galactic nuclei (AGN) from a variety of AGN classes. Methods: VHE observations of a sample of 14 AGN, considered candidate…
HESS observations and VLT spectroscopy of PG 1553+113
Aims: The properties of the very high energy (VHE; E > 100 GeV) γ-ray emission from the high-frequency peaked BL Lac PG 1553+113 are investigated. An attempt is made to measure the currently unknown…
