蟹状星云脉冲星的TeVγ射线周期发射  

Pulsed Emission of Very High Energy Gamma-Rays From Crab Pulsar

作　　者：徐春娴[1] 何会林[1] 何会海[1] 陈永忠 李辉东 姜印琳[1] 

机构地区：[1]中国科学院高能物理研究所宇宙线和高能天体物理开放实验室

出　　处：《高能物理与核物理》1998年第1期4-12,共9页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金;中科院院长基金

摘　　要：利用自行研制的两台大气切伦科夫望远镜（ＡＣＴ２和ＡＣＴ３），在１９９５年秋至１９９６年春的观测季节对蟹状星云脉冲星进行了１６８小时（ＡＣＴ２）和１２６小时（ＡＣＴ３）的跟踪观测．分析这些数据没有发现有月或天时间尺度稳定的３３ｍｓ周期的ＴｅＶγ射线发射，但发现两段持续几十分钟的暴发样本具有３３ｍｓ周期。We present here the results of observation of- very high energy(VHE) gamma - ray emission from Crab Pulsar with Beijing Atmospheric Cerenkov Telescopes, named ACT2 and ACT3, for the duration of the fall 1995-spring 1996 season. The data are based on 168 hours (ACT2) and 125 hours (ACT3) of exposure over the period of observation in tracking model. After conversion the event time to the solar barycenter, the data have been searched for evidence of pulsed emission at 33ms period of Crab Pulsar, We found no steady emission of VHE Gamma -ray with 33ms period at the scale of month or night. But there are two evidences of sporadic emission over an hour duration with the same period as the one at radio frequency.

关 键 词：蟹状星云脉冲星 Γ射线源 TeVγ射线 周期发射 

分 类 号：P145.6[天文地球—天体物理]