Current Status and First Results of the High Energy Stereoscopic System (H.E.S.S.)

Details Current Status and First Results of the High Energy Stereoscopic System (H.E.S.S.) Current Status and First Results of the High Energy Stereoscopic System (H.E.S.S.)

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..343d&link_type=abstract

SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret

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H.E.S.S. (High Energy Stereoscopic System) is an array of four 1072 large Imaging Cherenkov Telescopes devoted to gamma-ray astronomy above 100 GeV. The first telescope started operation on June 10th, 2002 and the three other telescopes have been brought into operation during the year 2003. The full system is operational since December 2003. H.E.S.S. combines the advantages of stereoscopy, large dish, fine pixelization camera and fast electronics, which makes it currently the most sensitive instrument in the TeV domain. The sensitivity has been improved by an order of magnitude compared to the previous-generation instruments and the threshold has been lowered down to 100 GeV at zenith, with a angular resolution of 0.1 degrees for point sources. We will report on the current status of the system and its performances in terms of sensitivity and resolution. We will also present the first results of H.E.S.S. on the Crab Nebula, an upper limit on the TeV flux from the supernova remnant SN 1006 and possibly results on other sources. The recent detection of the binary millisecond pulsar PSR 1259-63 near its periastron will be shown, together with observations and monitoring of the blazars PKS 2155-304 and Markarian 421, but these will be presented in greater detail in parallel sessions.

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