论文标题
PSR J1733-3716的时间和排放变化
Timing and emission variation of PSR J1733-3716
论文作者
论文摘要
我们介绍了PSR J1733-3716中的时机噪声的分析，该噪声结合了Parkes 64米射电望远镜的数据和从Nanshan 25米射电望远镜获得的近15年的正时数据。确定自旋频率和频率导数的变化。自旋频率的波动显而易见，振幅为1.94（7）*10 -9 Hz。检测到在1369 MHz处的集成曲线的变化，随着正确的轮廓分量的相对峰强度发生的变化。根据对1382 MHz的单个脉冲数据的分析，我们检测到弱排放状态，占整个数据的63％，其持续时间分布可以拟合幂定律。脉冲星还表现出强烈的发射状态，在此期间发射显示多种模式。这包括正常模式，左模式和右模式，其时间尺度跨越了一个和十七个脉冲周期。脉冲的这种短期变异性有助于综合曲线的变化。对自旋参数与集成曲线之间的相关性的检查表明，随机分布的可能性，这表明该脉冲星的旋转速率变化与发射变化之间可能没有明显的关系。
We present analysis of the timing noise in PSR J1733-3716, which combines data from Parkes 64-m radio telescope and nearly 15 years of timing data obtained from the Nanshan 25-m radio telescope. The variations in the spin frequency and frequency derivative are determined. The fluctuation in the spin frequency is obvious with an amplitude of 1.94(7)*10 -9 Hz. Variations of the integrated profile at 1369 MHz are detected with the changes occur in the relative peak intensity from the right profile component. From analysis of the single pulse data at 1382 MHz, we detect weak emission states that account for 63% of the whole data, and its duration distribution can be fitted with a power law. The pulsar also exhibits strong emission states, during which the emission shows multiple modes. This includes the normal mode, left mode and the right mode, with the time scales spanning between one and seventeen pulse periods. Such short term variability in pulses contributes to the variation of the integrated profile. Examination of the correlations between the spin parameters and the integrated profiles shows likelihood of a random distribution, which reveals that there is probably no obvious relationship between spin-down rate variations and changes of emission in this pulsar.
