论文标题
Nanshan的Pulsar计时12年的结果-I
Results of 12 Years of Pulsar Timing at Nanshan -- I
论文作者
论文摘要
从2002年7月至2014年3月，我们使用了新疆天文天文台的Nanshan 25米射电望远镜来获得87个Pulsars的时间观测。使用“ Cholesky”的时序分析方法，我们确定了48个脉冲星的位置和适当的运动，其中24个与先前发表的值相比有了改进的位置。我们还提出了使用脉冲星时和位置比较方法的第一个发表的第一个发表的针对9个脉冲星的适当动作，并提高了21个脉冲星的适当动作。脉冲星旋转参数是得出的，并且比36个脉冲星的先前发表的值更准确。在三个脉冲星中检测到故障：PSRS J1722 $ - $ 3632，J1852 $ - $ 0635和J1957+2831。对于前两个，小故障很大，带有$Δν_g/ν> 10^{ - 6} $，它们是这些脉冲星中第一个检测到的小故障。 PSR J1722 $ - $ 3632是带有大故障的第二古老的脉冲星。对于中年脉冲星（$τ_C> 10^5 $〜yr），计算出的制动指数$ | n | $与$τ_c$密切相关，$ n $的正值和负值的数量几乎相等。对于年轻的Pulsars（$τ_c<10^5 $ 〜yr），$ | n | $和$τ_c$之间没有相关性，并且大多数具有$ n> 0 $。
We have used the Nanshan 25-m Radio Telescope at Xinjiang Astronomical Observatory to obtain timing observations of 87 pulsars from 2002 July to 2014 March. Using the "Cholesky" timing analysis method we have determined positions and proper motions for 48 pulsars, 24 of which are improved positions compared to previously published values. We also present the first published proper motions for nine pulsars and improved proper motions for 21 pulsars using pulsar timing and position comparison method. The pulsar rotation parameters are derived and are more accurate than previously published values for 36 pulsars. Glitches are detected in three pulsars: PSRs J1722$-$3632, J1852$-$0635 and J1957+2831. For the first two, the glitches are large, with $Δν_g/ν> 10^{-6}$, and they are the first detected glitches in these pulsars. PSR J1722$-$3632 is the second oldest pulsar with large glitch. For the middle-age pulsars ($τ_c > 10^5$~yr), the calculated braking indices, $|n|$, are strongly correlated with $τ_c$ and the numbers of positive and negative values of $n$ are almost equal. For young pulsars ($τ_c < 10^5$~yr), there is no correlation between $|n|$ and $τ_c$ and most have $n>0$.
