Results and Perspective for the HESS Experiment

International audienceHESS is a Stereoscopic Astroparticle Experiment situed in the deserts of Namibia at 1800m of Altitude. Four 12m Telescopes provide stereoscopic data that permits a unique way of diminishing background events and best angular resolution. Its main characteristics are low energy threshold (100Gev) and substantial flux sensitivity (1% Crab units). We prsent here recent results for Galactic and ExtraGalactics Object as well as some more in depth studies from Data collected in the region of the Galactic Center

Impact of H.E.S.S. Lidar profiles on Crab Nebula data

The H.E.S.S. experiment in Namibia is a high-energy gamma-ray telescope sensitive in the energy range from 30 GeV to a several tens of TeV, that uses the atmospheric Cherenkov technique to detect showers developed within the atmosphere. The elastic lidar, installed on the H.E.S.S. site, allows to reduce the systematic errors related to the atmospheric composition uncertainties thanks to the estimation of the extinction profile for the Cherenkov light (300-650 nm). The latter has a direct impact on the reconstructed parameters, such as the photon energy and the source flux. In this paper we report on physics results obtained on the Crab Nebula spectrum using the lidar profiles obtained at the H.E.S.S. site

Impact of H.E.S.S. Lidar profiles on Crab Nebula data

The H.E.S.S. experiment in Namibia is a high-energy gamma-ray telescope sensitive in the energy range from 30 GeV to a several tens of TeV, that uses the atmospheric Cherenkov technique to detect showers developed within the atmosphere. The elastic lidar, installed on the H.E.S.S. site, allows to reduce the systematic errors related to the atmospheric composition uncertainties thanks to the estimation of the extinction profile for the Cherenkov light (300-650 nm). The latter has a direct impact on the reconstructed parameters, such as the photon energy and the source flux. In this paper we report on physics results obtained on the Crab Nebula spectrum using the lidar profiles obtained at the H.E.S.S. site