arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.2580astro-ph
收藏

蟹状星云脉冲星光辐射的脉冲变化

Pulse variation of the optical emission of Crab pulsar

S. Karpov, G. Beskin, A. Biryukov, V. Plokhotnichenko, V. Debur, A. Shearer

摘要:

利用俄罗斯6米望远镜和William Hershel望远镜的1 $μ$ s分辨率观测数据,分析了蟹状星云脉冲星光脉冲的稳定性。搜索的变化的脉冲形状以及其到达时间的稳定性。脉冲星可能的短时间尺度自由进动的上限。脉冲到达时间(TOA)的变化在1.5-2小时的时间尺度上的证据,以及小的光变曲线(形状和分离的主峰和次峰)之间的数据集的变化,在时间尺度上的年的证据。此外,主脉冲的精细结构进行了研究。

英文摘要:

The stability of the optical pulse of the Crab pulsar is analyzed based on the 1 $μ$s resolution observations with the Russian 6-meter and William Hershel telescopes equipped with different photon-counting detectors. The search for the variations of the pulse shape along with its arrival time stability is performed. Upper limits on the possible short time scale free precession of the pulsar are placed. The evidence of pulse time of arrival (TOA) variations on 1.5-2 hours time scale is presented, along with evidence of small light curve (shape and separation of main and secondary peaks) changes between data sets, on time scale of years. Also, the fine structure of the main pulse is studied.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑