Flux upper limits of diffuse TeV gamma rays from the Galactic plane using the effective area of the Tibet-II and -III arrays

被引:10
作者
Amenomori, M.
Ayabe, S.
Cui, S. W.
Danzengluobu
Ding, L. K.
Ding, X. H.
Feng, C. F.
Feng, Z. Y.
Gao, X. Y.
Geng, Q. X.
Guo, H. W.
He, H. H.
He, M.
Hibino, K.
Hotta, N.
Hu, Haibing
Hu, H. B.
Huang, J.
Huang, Q.
Izumi, M.
Jia, H. Y.
Kajino, F.
Kasahara, K.
Katayose, Y.
Kato, C.
Kawata, K.
Labaciren
Le, G. M.
Li, J. Y.
Lu, H.
Lu, S. L.
Meng, X. R.
Mizutani, K.
Mu, J.
Munakata, K.
Nagai, A.
Nanjo, H.
Nishizawa, M.
Ohnishi, M.
Ohta, I.
Onuma, H.
Ouchi, T.
Ozawa, S.
Ren, J. R.
Saito, T.
Sakata, M.
Sasaki, T.
Shibata, M.
Shiomi, A.
Shirai, T.
机构
[1] Konan Univ, Dept Phys, Higashinada Ku, Kobe, Hyogo 6588501, Japan
[2] Hirosaki Univ, Dept Phys, Hirosaki, Aomori 0368561, Japan
[3] Saitama Univ, Dept Phys, Urawa, Saitama 3388570, Japan
[4] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
[5] Tibet Univ, Dept Math & Phys, Lhasa 850000, Peoples R China
[6] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China
[7] SW Jiaotong Univ, Inst Modern Phys, Chengdu 610031, Peoples R China
[8] Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China
[9] Kanagawa Univ, Fac Engn, Yokohama, Kanagawa 2218686, Japan
[10] Utsunomiya Univ, Fac Educ, Utsunomiya, Tochigi 3218505, Japan
[11] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan
[12] Shibaura Inst Technol, Fac Syst Engn, Omiya, Saitama 3308570, Japan
[13] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan
[14] Shinshu Univ, Dept Phys, Matsumoto, Nagano 3908621, Japan
[15] Chinese Acad Sci, Ctr Space Sci & Applicat Res, Beijing 100080, Peoples R China
[16] Utsunomiya Univ, Adv Media Network Ctr, Utsunomiya, Tochigi 3218585, Japan
[17] Natl Inst Informat, Tokyo 1018430, Japan
[18] Tokyo Metropolitan Coll Aeronaut Engn, Tokyo 1160003, Japan
[19] Shonan Inst Technol, Fujisawa, Kanagawa 2518511, Japan
来源
ASTROPHYSICS | 2006年 / 37卷 / 10期
基金
日本学术振兴会;
关键词
diffuse TeV gamma rays; galactic plane; flux upper limits;
D O I
10.1016/j.asr.2005.08.049
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
We obtained new upper limits on the diffuse gamma rays from the inner Galactic (IG) and outer Galactic (OG) planes in 3-10 TeV region, using the Tibet air shower data and new Monte Carlo simulation results. A difference of the effective area of the air-shower array for observing gamma rays and cosmic rays was carefully taken into account in this analysis, resulting in that the flux upper limits of the diffuse TeV gamma rays were reduced by factors of 4.0-3.7 for 3-10 TeV than those in our previous results (Amenomori, M., Ayabe, S., Cui, S.W., et al. Observation of multi-TeV diffuse gamma rays from the Galactic plane with the Tibet air shower array. Astrophys. J. 580, 887-895, 2002.). This new result suggests that the inverse power index of the energy spectrum of source electrons responsible for generating diffuse TeV gamma rays through inverse Compton effect should be steeper than 2.2 and 2.1 for IG and OG planes, respectively, with 99%C.L. (c) 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:1932 / 1937
页数:6
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