论文标题
帕克斯望远镜的19个脉冲星的超宽带宽观测
Ultra-wide Bandwidth Observations of 19 pulsars with Parkes telescope
论文作者
论文摘要
通量密度是描述脉冲星的基本观察参数。在最新的脉冲星目录中，有24％的无线电脉冲星在任何频率下都没有磁通密度测量。在这里，我们报告了第一个通量密度测量值，光谱指数，脉冲曲线和光谱指数与使用超宽带低（UWL）接收器系统安装在Parkes射电望远镜上的超宽带（UWL）接收器系统的19个脉冲星的脉冲星参数的相关性。 17个脉冲星的光谱指数的结果在-0.6和-3.10之间。显示了13个脉冲星的极化曲线。光谱指数和自旋频率之间存在中等相关性。对于大多数检测到的脉冲星，脉冲轮廓的S/N比不高，因此DM，Faraday旋转度量（RM），并且无法精确确定极化。在我们的观察结果中未检测到29个脉冲星。我们讨论了为什么未检测到这些脉冲星的可能解释。
Flux densities are basic observation parameters to describe pulsars. In the most updated pulsar catalog, 24% of the listed radio pulsars have no flux density measurement at any frequency. Here, we report the first flux density measurements, spectral indices, pulse profiles, and correlations of the spectral index with pulsar parameters for 19 pulsars employing the Ultra-Wideband Low (UWL) receiver system installed on the Parkes radio telescope. The results for spectral indices of 17 pulsars are in the range between -0.6 and -3.10. The polarization profiles of thirteen pulsars are shown. There is a moderate correlation between the spectral index and spin frequency. For most pulsars detected, the S/N ratio of pulse profile is not high, so DM, Faraday rotation measure (RM), and polarization can not be determined precisely. Twenty-nine pulsars were not detected in our observations. We discuss the possible explanations for why these pulsars were not detected.
