Search for Multi-TeV gamma-ray emission from nearby SNRs with the Tibet air shower array The Tibet ASγ Collaboration

Amenomori, M.; Ayabe, S.; Cao, P. Y.; Ding, L. K.; Feng, Z. Y.; Fu, Y.; Guo, H. W.; He, M.; Hibino, K.; Hotta, N.; Huang, Q.; Huo, A. X.; Izu, K.; Jia, H. Y.; Kajino, F.; Kasahara, K.; Katayose, Y.; Labaciren; Li, J. Y.; Lu, H.
June 2000
AIP Conference Proceedings;2000, Vol. 515 Issue 1, p459
Academic Journal
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[sup -12] cm[sup -2] s[sup -1] TeV[sup -1] at 3 TeV. No significant DC excess was found from any of these SNRs except from the Crab Nebula. © 2000 American Institute of Physics.


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