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Flux upper limits for 47 AGN observed with H.E.S.S. in 2004-2011
(EDP Sciences, 2014)
Context. About 40% of the observation time of the High Energy Stereoscopic System (H.E.S.S.) is dedicated to studying active galactic nuclei
(AGN), with the aim of increasing the sample of known extragalactic very-high-energy ...
Long-term monitoring of PKS2155-304 with ATOM and H.E.S.S.: investigation of optical/y-ray correlations in different spectral states
(EDP Sciences, 2014)
In this paper we report on the analysis of all the available optical and very high-energy
y-ray (>200 GeV) data for the BL Lac object PKS 2155-304,
collected simultaneously with the ATOM and H.E.S.S. telescopes from ...