佳木斯脉冲星观测：I. PSR B0919 +06异常排放事件
Jiamusi Pulsar Observations: I. Abnormal emission events of PSR B0919+06
摘要：
PSR B 0919 +06通常辐射正常相位范围内的无线电脉冲。它以其偶尔出现的令人困惑的异常发射事件而闻名，其中单个脉冲在几十个周期内进入较早的相位范围，然后返回到其通常的相位。迄今为止，只有少数此类事件可供研究。我们利用佳木斯深空站的66米望远镜在S波段对PSR B 0919 +06进行了约30小时的观测，共探测到92次异常发射事件。我们确定四种类型的事件的基础上，单个脉冲的延迟或逐渐相移。异常辐射事件每1000 ~ 3000个周期随机发生一次，对平均廓线前沿的影响幅度可达2%。异常发射事件可能与脉冲星磁层发射过程的渐变有关。
英文摘要：
PSR B0919+06 generally radiates radio pulses in a normal phase range. It has been known for its occasional perplexing abnormal emission events wherein individual pulses come to an earlier phase range for a few tens of periods and then returns to its usual phase. Heretofore, only a few such events have been available for study. We observed PSR B0919+06 for about 30 hours using the Jiamusi 66-m telescope at Jiamusi Deep Space Station at S-band, and detected 92 abnormal emission events. We identify four types of events based on the abrupted or gradual phase-shifting of individual pulses. The abnormal emission events are seen to occur randomly some every 1000 to 3000 periods, and they affect the leading edge of the mean profile by up to 2\% in amplitude. The abnormal emission events are probably related to gradual changes of emission processing in the pulsar magnetosphere.
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