The energy spectrum of all-particle cosmic rays around the knee region observed with the Tibet-III air-shower array - INSPIRE

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The energy spectrum of all-particle cosmic rays around the knee region observed with the Tibet-III air-shower array

M. Amenomori
(
- Hirosaki U.
)
,
S. Ayabe
(
- Saitama U.
)
,
X.J. Bi
(
- Beijing, Inst. High Energy Phys.
)
,
D. Chen
(
- Yokohama Natl. U.
)
,
S.W. Cui
(
- Hebei Normal U.
)

Mar, 2008

12 pages

Published in:

Adv.Space Res. 42 (2008) 467-472

e-Print:

0803.1005 [astro-ph]

DOI:

10.1016/j.asr.2007.04.080

View in:

ADS Abstract Service

reference search9 citations

Citations per year

Abstract: (arXiv)

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

10^{14}

eV and

10^{17}

eV, in which the position of the knee is clearly seen at around 4 PeV. The spectral index is -2.68

\pm

0.02(stat.) below 1PeV, while it is -3.12

\pm

0.01(stat.) above 4 PeV in the case of QGSJET+HD model, and various systematic errors are under study now.

96.40.De
98.70.Sa
95.85.Ry
cosmic rays
knee
air shower
cosmic radiation: energy spectrum
cosmic radiation: primary
showers: air
showers: spatial distribution

References(10)

Figures(7)

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