Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..515..459a&link_type=abstract
GeV-TeV GAMMA RAY ASTROPHYSICS WORKSHOP: Towards a Major Atmospheric Cherenkov Detector VI. AIP Conference Proceedings, Volume
Astronomy and Astrophysics
Astrophysics
5
Supernova Remnants, Gamma-Ray
Scientific paper
The Tibet air-shower array operating at Yangbajing (4300 m above sea level) is sensitive to gamma-ray air showers at energies as low as 3 TeV. The observation of the Moon's shadow has provided a direct check of the angular resolution, the energy estimation and the systematic pointing error of this air-shower array. Using these data, we have searched for multi-TeV gamma-ray emission from 27 SNRs located within 10 kpc distance in the declination band of -10° to +70°. The signal from the Crab Nebula was detected at 5.5 σ level. The intensity observed is (4.61+/-0.90)×10-12 cm-2 s-1 TeV-1 at 3 TeV. No significant DC excess was found from any of these SNRs except from the Crab Nebula. .
Amenomori Michihiro
Ayabe S.
Cao P. Y.
Ding Lin-Kai
Feng Zhao-Yang
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