Observation of multi-TeV gamma rays from the Crab Nebula using the Tibet air shower array

被引：60

作者：

Amenomori, M ^{[1
]}

Ayabe, S

Cao, PY

Danzengluobu

Ding, LK

Feng, ZY

Fu, Y

Guo, HW

He, M

Hibino, K

Hotta, N

Huang, Q

Hu, AX

Izu, K

Jia, HY

Kajino, F

Kasahara, K

Katayose, Y

Labaciren

Li, JY

Lu, H

Lu, SL

Luo, GX

Meng, XR

Mizutani, K

Mu, J

Nanjo, H

Nishizawa, M

Ohnishi, M

Ohta, I

Ouchi, T

Ren, JR

Saito, T

Sakata, M

Sasaki, T

Shi, ZZ

Shibata, M

Shiomi, A

Shirai, T

Sugimoto, H

Taira, K

Tan, YH

Tateyama, N

Torii, S

Utsugi, T

Wang, CR

Wang, H

Xu, XW

Yamamoto, Y

Yu, GC

机构：

[1] Hirosaki Univ, Dept Phys, Hirosaki, Aomori 0368561, Japan

[2] Saitama Univ, Dept Phys, Urawa, Saitama 3388570, Japan

[3] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China

[4] Tibet univ, Dept Math & Phys, Lhasa 850000, Peoples R China

[5] Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China

[6] SW Jiaotong Univ, Dept Phys, Chengdu 610031, Peoples R China

[7] Kanagawa Univ, Fac Engn, Yokohama, Kanagawa 2218686, Japan

[8] Utsunomiya Univ, Fac Educ, Utsunomiya, Tochigi 3218505, Japan

[9] Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 1888502, Japan

[10] Konan Univ, Dept Phys, Kobe, Hyogo 6588501, Japan

[11] Shibaura Inst Technol, Fac Syst Engn, Omiya, Saitama 3308570, Japan

[12] Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China

[13] Natl Ctr Sci Informat Syst, Tokyo 1128640, Japan

[14] Tokyo Metropolitan Coll Aeronaut Engn, Tokyo 1160003, Japan

[15] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2400067, Japan

[16] Shonan Inst Technol, Fujisawa, Kanagawa 2518511, Japan

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 525卷 / 02期

关键词：

gamma rays : observations; ISM : individual (Crab Nebula); supernova remnants;

D O I：

10.1086/312342

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Tibet experiment, operating at Yangbajing (4300 m above sea level), is the lowest energy air shower array, and thr new high-density array constructed in 1996 is sensitive to gamma-ray air showers at energies as low as 3 TeV. With this new array, the Crab Nebula was observed in multi-TeV gamma-rays and a signal was detected at the 5.5 sigma level. We also obtained the energy spectrum of gamma-rays in the energy region above 3 TeV which partially overlaps those observed with imaging atmospheric Cerenkov telescopes. The Crab spectrum observed in this energy region can be represented by the power-law fit dJ(E)/dE = (4.61 +/- 0.90) x 10(-12)(E/3 TeV)(-2.62+/-0.17) cm(-2) s(-1) TeV-1. This is the first observation of gamma-ray signals from point sources with a conventional air shower array using scintillation detectors.

引用

页码：L93 / L96

页数：4

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