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arXiv 2201.06815astro-ph.HE
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PSR B1859 +07与FAST的异常发射

The unusual emission from PSR B1859+07 with FAST

Lin Wang, Ye-Zhao Yu, Feifei Kou, Kuo Liu, Xinxin Wang, Bo Peng

摘要:

利用500米口径球面射电望远镜(FAST)对PSR B 1859 $+$ 07的异常发射模式进行了同步宽带射电观测。这颗脉冲星表现出特殊的辐射现象,即辐射偶尔向早期旋转相位移动,以及正常相位时辐射模式的变化。我们用我们的数据集确认了所有这三种发射模式,包括非移位脉冲的B(突发)和Q(安静)模式以及具有155个脉冲准周期的发射移位模式。我们还发现了一种新的发射位移事件,它在事件发生期间具有正常相位的发射。我们详细研究了这些发射模式的偏振特性,发现它们都具有相似的偏振角(PA)曲线,表明这三种模式都是从同一个发射高度发射的。

英文摘要:

We present simultaneous broad-band radio observations on the abnormal emission mode from PSR B1859$+$07 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). This pulsar shows peculiar emission phenomena, which are occasional shifts of emission to an early rotational phase and mode change of emission at the normal phase. We confirm all these three emission modes with our datasets, including the B (burst) and Q (quiet) modes of the non-shift pulses and the emission shift mode with a quasi-periodicity of 155 pulses. We also identify a new type of emission shift event, which has emission at the normal phase during the event. We studied polarisation properties of these emission modes in details, and found that they all have similar polarisation angle (PA) curve, indicating the emission of all these three modes are from the same emission height.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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