High Energy Stereoscopic System

In Astrophysical, High Energy Stereoscopic System (abrévié H.E.S.S. ) is a network of Télescope S with imagery atmospheric Tcherenkov for the study of the gamma rays between 100 Giga- electronvolt and some Tera - electronvolt. The Acronyme was selected in the honor of Victor Hess, which discovered the existence of the cosmic rays.

The name also underlines the two main features of the installation: simultaneous observation of cascades of particles caused by the gamma rays entering the terrestrial atmosphere, under various visual angles, and the combination of several telescopes in only one larger system to increase the effective surface of detection of the gamma rays. H.E.S.S. makes it possible to explore the astronomical sources which emit gamma rays, with intensities of some thousandth of the flow of the Nébuleuse of the Crab (first source detected in this field of energy and which is used as reference).

H.E.S.S. is located in Namibia, close to Gamsberg, a well-known area for its excellent optical quality. The first of the 4 telescopes of Phase I of project H.E.S.S. was put in operation in the current of the summer 2002. The system was supplemented in December 2003.

In 2004, H.E.S.S. was the first telescope with atmospheric Tcherenkov imagery to produce an image in two dimensions of a wide source of gamma rays (the Rémanent of supernova X-ray J1713.7-3946, probably resulting from the historical Supernova SN 393; the sources all detected previously were specific). In 2005, one announced that H.E.S.S. had detected eight new sources of gamma rays of high energies, thus doubling the number of sources known in this field. Two of these sources could not be identified with objects known as remainders of Supernova E or Pulsar S, implying the possibility of a new physics and existence of a new type of “dark” objects.

See too

Internal bonds

  • List of the astronomical observatories

External bonds

  • HESS, the eye of a new Universe 1 {{Re}} left 2 {{E}} left, Sky & Space radio, Patrick Fleury
  • Web site of High Energy Stereoscopic System Project (H.E.S.S.).
  • '' Nature '': High energy particle acceleration in the Shell off has supernova remnant
  • '' Science '': With new population off very high energy gamma-ray sources in the Milky Way
  • '' New Scientist '': Number off very high-energy gamma ray double sources

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