Study on the Absorption of 10TeV γ-Rays Interacting with Soft Photons in Intergalactic Space

XU XianWu; DING LinKai; CAO PeiYuan; DAI BenZhong; FENG ZhenYong; FU Yu; GUO HongWei; HE Mao; HUANG Qing; HUO AnXiang; JIA HuanYu; LI JinYu; LIU ShaoMin; LU Hong; LU SuiLing; LUO GuangXuan; MEI DongMing

Chinese Physics C> 2000, Vol. 24> Issue(8) : 697-701

Study on the Absorption of 10TeV γ-Rays Interacting with Soft Photons in Intergalactic Space

Institute of High Energy Physics,CAS, Beijing 100039,China2 Department of Physics,Shangdong University,Ji'nan 250100,China3 Department of Physics,Yunnan University,Kunming 650091,China4 Department of Physics,South West Jiaotong University,Chengdu 610031,China5 Department of Mathematics and Physics,Tibet University,Lhasa 850000,China

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Abstract：
TeV gamma rays will be attenuated or absorbed due to the interaction with soft photons in intergalactic space. The spectra of Mrk421 and Mrk501 during their flaring have been observed by ACTs. Using the data obtained with Tibet Ⅱ/HD AS array from October of 1995 to Augest of 1997,the preliminary results of energy density of intergalactic infrared radiation field are presented in this paper. Analysis shows that no statistically significant absorption evidence of high energy gamma rays is found up to around 30 TeV.

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XU XianWu, DING LinKai, CAO PeiYuan, DAI BenZhong, FENG ZhenYong, FU Yu, GUO HongWei, HE Mao, HUANG Qing, HUO AnXiang, JIA HuanYu, LI JinYu, LIU ShaoMin, LU Hong, LU SuiLing, LUO GuangXuan and MEI DongMing. Study on the Absorption of 10TeV γ-Rays Interacting with Soft Photons in Intergalactic Space[J]. Chinese Physics C, 2000, 24(8): 697-701.

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Received: 1999-08-12
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on the Absorption of 10TeV γ-Rays Interacting with Soft Photons in Intergalactic Space

Corresponding author: XU XianWu,

Institute of High Energy Physics,CAS, Beijing 100039,China2 Department of Physics,Shangdong University,Ji'nan 250100,China3 Department of Physics,Yunnan University,Kunming 650091,China4 Department of Physics,South West Jiaotong University,Chengdu 610031,China5 Department of Mathematics and Physics,Tibet University,Lhasa 850000,China

Received Date: 1999-08-12

Accepted Date: 1900-01-01

Available Online: 2000-08-05

Abstract: TeV gamma rays will be attenuated or absorbed due to the interaction with soft photons in intergalactic space. The spectra of Mrk421 and Mrk501 during their flaring have been observed by ACTs. Using the data obtained with Tibet Ⅱ/HD AS array from October of 1995 to Augest of 1997,the preliminary results of energy density of intergalactic infrared radiation field are presented in this paper. Analysis shows that no statistically significant absorption evidence of high energy gamma rays is found up to around 30 TeV.

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Study on the Absorption of 10TeV γ-Rays Interacting with Soft Photons in Intergalactic Space

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