Orateur
Dr
Petter Hofverberg
(MPI-K Heidelberg)
Description
The High Energy Stereoscopic System (H.E.S.S.) is a system of four
Cherenkov telescopes for GeV/TeV gamma-ray astronomy. By observing
Cherenkov light emitted by particles in gamma-ray induced air showers
the direction and energy of the primary gamma-ray can be reconstructed.
A stereoscopic view of the air shower is achieved by combining the
information from the four telescopes, allowing for an accurate
reconstruction and a high rejection of background cosmic rays.
The system has a sensitivity of 1% of the flux of the Crab nebula, the
brightest steady source of gamma-rays in the sky, and a energy threshold
of 100 GeV. The system is being upgraded with a new, 600 m2 telescope,
currently being built in the center of the array. This will not only
increase the sensitivity in the currently accessible energy regime, but
also lower the energy threshold to about 30 GeV.
H.E.S.S. has been operating since December 2003 and still continues to
produce exciting results, including the recent detection of a VHE flare
from the radio galaxy M87 and the detection of VHE emission from the
starburst galaxy NGC 253.
In this presentation, technical aspects of the system will be discussed
and high-lights from resent results presented.
| Please indicate "poster" or "plenary" session. Final decision will be made by session coordinators. | Plenary |
|---|
Auteur principal
Dr
Petter Hofverberg
(MPI-K Heidelberg)
