抄録
We have already reported the first result on the all-particle spectrum around the knee region based on data from 2000 November to 2001 October observed by the Tibet-III air-shower array. In this paper, we present an updated result using data set collected in the period from 2000 November through 2004 October in a wide range over 3 decades between 1014 and 1017 eV, in which the position of the knee is clearly seen at around 4 PeV. The spectral index is -2.68 ± 0.02(stat.) below 1 PeV, while it is -3.12 ± 0.01(stat.) above 4 PeV in the case of QGSJET+HD model, and various systematic errors should be carefully done in the very near future.
本文言語 | English |
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ページ(範囲) | 467-472 |
ページ数 | 6 |
ジャーナル | Advances in Space Research |
巻 | 42 |
号 | 3 |
DOI | |
出版ステータス | Published - 2008 8月 5 |
ASJC Scopus subject areas
- 宇宙惑星科学
- 天文学と天体物理学