Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..558..761a&link_type=abstract
HIGH ENERGY GAMMA-RAY ASTRONOMY: International Symposium. AIP Conference Proceedings, Volume 558, pp. 761-766 (2001).
Astronomy and Astrophysics
Astronomy
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 21 SNRs located within 5 kpc distance in the declination band of 0° to +60°. The signal from the Crab Nebula was detected at 5.5 σ level as described another paper. No significant DC excess exceeding 5 σ level was found from any of these SNRs except from the Crab Nebula. The results of nearby eight SNRs piled up gave a flux upper limit slightly lower than the expected values for a simple model of shock acceleration. .
Amenomori Michihiro
Ayabe S.
Ding Lin-Kai
Feng Zhao-Yang
Fu Yuan-Yuan
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