Search
Now showing items 1-3 of 3
A NECTAr-based upgrade for the Cherenkov cameras of the H.E.S.S. 12-meter telescopes
(Elsevier, 2020)
The High Energy Stereoscopic System (H.E.S.S.) is one of the three arrays of imaging atmospheric Cherenkov telescopes (IACTs) currently in operation. It is composed of four 12-meter telescopes and a 28-meter one, and is ...
Simultaneous observations of the blazar PKS 2155-304 from ultra-violet to TeV energies
(EDP Sciences, 2020)
Here we report the results of the first ever contemporaneous multi-wavelength observation campaign on the BL Lac object PKS 2155−304 involving Swift, NuSTAR, Fermi-LAT, and H.E.S.S. The use of these instruments allows us ...
H.E.S.S. detection of very high-energy γ-ray emission from the quasar PKS 0736+017
(EDP Sciences, 2020)
Context. Flat-spectrum radio-quasars (FSRQs) are rarely detected at very high energies (E ≥ 100 GeV) due to their low-frequency-peaked spectral
energy distributions. At present, only six FSRQs are known to emit very ...