Abstract We present here the results of observation of very high energy(VHE) gamma-ray emission from Crab Pulsar with the Beijing Atmospheric Cerenkov Telescopes, named ACT2 and ACT3, during the 1995－1996 season. The data are based on 168 h (ACT2) and 125 h (ACT3) of exposure over the period of observation in tracking mode. After converting the event time to the solar barycentre, the data have been searched for evidence of pulsed emission at 33 ms period of Crab Pulsar. We found no steady emission of VHE Gamma-ray with 33 ms period at the time scale of month or nights. But there are two evidences of sporadic emission over an hour duration with the same period as the one at radio wave band.
Fund: Project supported especially by the President Foundation of the Chinese Academy of Sciences, and by the National Natural Science Foundation of China (Grant No.19135032).
Cite this article:
Xu Chun-xian (徐春娴), He Hui-lin (何会林), He Hui-hai (何会海), Chen Yong-zhong (陈永中), Li Hui-dong (李辉东), Jiang Yin-lin (姜印琳) PULSED EMISSION OF VERY HIGH ENERGY GAMMA RAYS FROM CRAB PULSAR 1999 Acta Physica Sinica (Overseas Edition) 8 63
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
