Search for a TeV Gamma Rays Emission from the Shell-like SNP G40.5-0.5 Using the Yangbajing Extend Air Shower Array

ZHANG Ji-Long; CUI Shu-Wang; DING Lin-Kai; DING Xiao-Hong; FENG Cun-Feng; FENG Zhen-Yong; GAO Xiao-Yu; GENG Qing-Xi; GUO Hong-Wei; HE Hui-Hai; HE Mao

Chinese Physics C> 2006, Vol. 30> Issue(1) : 13-17

Search for a TeV Gamma Rays Emission from the Shell-like SNP G40.5-0.5 Using the Yangbajing Extend Air Shower Array

Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,CAS,Beijing 100049,China2 Department of Mathematics and Physics,Tibet University,Lhasa 850000,China3 Department of Physics,Shandong University,Jinan 250100,China4 Institute of Modern Physics,South West Jiaotong University,Chengdu 610031,China5 Department of Physics,Yunnan University,Kunming 650091,China6 Center of Space Science and Application Research,CAS,Beijing 100080,China

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Abstract：
Using observation data of the Yangbajing extensive air shower array from October 2000 to September 2001, the TeV gamma rays from the shell-like SNR G40.5-0.5 direction were detected. A region with the highest excess of 4.4σ was found using two dimensional analysis method.The position of EGRET unidentified source GeV J1907+0557 is near the centrer of the region.

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ZHANG Ji-Long, CUI Shu-Wang, DING Lin-Kai, DING Xiao-Hong, FENG Cun-Feng, FENG Zhen-Yong, GAO Xiao-Yu, GENG Qing-Xi, GUO Hong-Wei, HE Hui-Hai, HE Mao, Search for a TeV Gamma Rays Emission from the Shell-like SNP G40.5-0.5 Using the Yangbajing Extend Air Shower Array[J]. Chinese Physics C, 2006, 30(1): 13-17.

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Received: 2005-04-30
Revised: 1900-01-01

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