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.
出处
《高能物理与核物理》
EI
CSCD
北大核心
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