H.E.S.S. constraints on dark matter annihilations towards the Sculptor and Carina dwarf galaxies
The Sculptor and Carina dwarf spheroidal galaxies were observed with the H.E.S.S. Cherenkov telescope array between January 2008 and December 2009. The data sets consist of a total of 11.8 h and 14.8 h of high…
Revisiting the Westerlund 2 field with the HESS telescope array
Aims. Previous observations with the HESS telescope array revealed the existence of extended very-high-energy (VHE; E > 100 GeV) γ-ray emission, HESS J1023–575, coincident with the young stellar cluster Westerlund 2. At the time of discovery, the origin…
Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622
Context. The detection of gamma-rays in the very-high-energy (VHE) range (100 GeV−100 TeV) offers the possibility of studying the parent population of ultrarelativistic particles found in astrophysical sources, so it is useful for understanding the underlying astrophysical…
Discovery of VHE γ-rays from the BL Lacertae object PKS 0548-322
Aims: PKS 0548-322 (z = 0.069) is a “high-frequency-peaked” BL Lac object and a candidate very high energy (VHE, E > 100 GeV) γ-ray emitter, due to its high X-ray and radio flux. Observations…
VHE γ-ray emission of PKS 2155-304: spectral and temporal variability
Context. Observations of very high-energy γ-rays from blazars provide information about acceleration mechanisms occurring in their innermost regions. Studies of variability in these objects lead to a better understanding of the mechanisms in play.Aims.…
First detection of VHE γ-rays from SN 1006 by HESS
Aims. Recent theoretical predictions of the lowest very high energy (VHE) luminosity of SN 1006 are only a factor 5 below the previously published HESS upper limit, thus motivating further in-depth observations of this…
Multi-wavelength observations of H 2356-309
Aims: The properties of the broad-band emission from the high-frequency peaked BL Lac H 2356-309 (z = 0.165) are investigated.Methods: Very high energy (VHE; E > 100 GeV) observations of H 2356-309 were performed…
PKS 2005-489 at VHE: four years of monitoring with HESS and simultaneous multi-wavelength observations
Aims: Our aim is to study the very high energy (VHE; E>100 GeV) γ-ray emission from BL Lac objects and the evolution in time of their broad-band spectral energy distribution (SED).Methods: VHE observations of…
Localizing the VHE γ-ray source at the Galactic Centre
The inner 10 pc of our Galaxy contains many counterpart candidates of the very high energy (VHE; >100 GeV) γ-ray point source HESS J1745−290. Within the point spread function of the H.E.S.S. measurement, at…
HESS upper limits on very high energy gamma-ray emission from the microquasar GRS 1915+105
Context: High energy particles reside in the relativistic jets of microquasars, making them possible sources of very high energy radiation (VHE, >100 GeV). Detecting this emission would provide a new handle on jet physics.Aims:…
