Search for TeV gamma rays from the Crab Nebula with Tibet II HD AS array

Citation
Xw. Xu et al., Search for TeV gamma rays from the Crab Nebula with Tibet II HD AS array, HIGH EN P N, 24(6), 2000, pp. 473-477
Citations number
10
Language
CHINESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
ISSN journal
0254-3052 → ACNP
Volume
24
Issue
6
Year of publication
2000
Pages
473 - 477
Database
ISI
SICI code
0254-3052(200006)24:6<473:SFTGRF>2.0.ZU;2-Q
Abstract
A lot of data has been accumulated with Tibet II and HD AS array operated s uccessfully since October of 1995 and 1996, respectivley. The preliminary r esults of searching for steady TeV gamma ray emissions from Crab Nebula wit h these data were presented in this paper. Analysis shows that the accumula tive excess events of steady 3TeV gamma ray emissions from Crab Nebula was increasing stably and the statistical significance reached 3.2 sigma, where as no statistical significant evidence of steady 10TeV and 30TeV gamma ray emissions was found.