One large glitch in PSR B1737-30 detected with the TMRT
One large glitch in PSR B1737-30 detected with the TMRT
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TMRT 检测到 PSR B1737-30 中的一个大故障
DOI：
10.1088/1674-4527/19/5/73
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发表时间：
2019
影响因子：
1.8
通讯作者：
Shen Zhi Qiang
中科院分区：
文献类型：
--
作者：
Liu Jie;Yan Zhen;Yuan Jian Ping;Zhao Ru Shuang;Huang Zhi Peng;Wu Xin Ji;Wang Na;Shen Zhi Qiang
利用新建的上海天马射电望远镜（TMRT）获得的从MJD 57999到58406的数据，在PSR B1737-30中检测到一个大的故障。这个小故障发生在MJD 58232.4附近，此时脉冲星的旋转频率增加了约1.38× 10− 6 Hz，对应的分数阶跃变化为Δν/ν = 8.39× 10− 7。突波后ν逐渐减小到突波前值。观测到频率导数经历了约-9 × 10 - 16 s-2的阶跃变化。自1987年7月以来，PSR B1737− 30中已经报告了36个故障，包括这个故障。根据我们的分析，毛刺大小分布很好地描述了指数为1.13的幂律。两个相邻毛刺之间的间隔（等待时间ΔT）的分布遵循泊松概率密度函数。对于PSR B1737− 30，在大毛刺之后，间隔往往很长。然而，在毛刺大小和自前一毛刺以来的间隔之间没有发现相关性。
One large glitch was detected in PSR B1737–30 using data spanning from MJD 57999 to 58406 obtained with the newly built Shanghai Tian Ma Radio Telescope (TMRT). The glitch took place at the time around MJD 58232.4 when the pulsar underwent an increase in the rotation frequency of Δν about 1.38× 10− 6 Hz, corresponding to a fractional step change of Δν/ν∼ 8.39× 10− 7. Post-glitch ν gradually decreased to the pre-glitch value. The frequency derivative was observed to undergo a step change of about− 9× 10− 16 s− 2. Since July 1987, there have been 36 glitches already reported in PSR B1737− 30 including this one. According to our analysis, the glitch size distribution is well described by a power law with an index of 1.13. The distribution of the interval between two adjacent glitches (waiting time ΔT) follows a Poisson probability density function. For PSR B1737− 30, the interval is prone to be long after a large glitch. However, no correlation is found between glitch size and the interval since the previous glitch.