About 200 radio pulsars have been observed to exhibit nulling episodes - short and long. We find that the nulling fraction of a pulsar does not have any obvious correlation with any of the intrinsic pulsar parameters. It also appears that the phenomenon of nulling may be preferentially experienced by pulsars with emission coming predominantly from the polar cap region, and also having extremely curved magnetic fields.

中文翻译：

---

射电脉冲星亚群（I）：脉冲星归零的奇怪案例

已经观察到大约 200 颗射电脉冲星表现出归零事件——短的和长的。我们发现脉冲星的归零分数与任何固有脉冲星参数没有任何明显的相关性。似乎零点现象可能更容易发生在发射主要来自极冠区域的脉冲星上，而且还具有极弯曲的磁场。