论文标题
PSR B1859+07的异常排放,快速发射
The unusual emission from PSR B1859+07 with FAST
论文作者
论文摘要
我们使用五百米的光圈球形射电望远镜(快速),在PSR B1859 $+$ 07的异常发射模式下同时进行了广泛的无线电观测。该脉冲星显示出奇特的发射现象,这是偶尔在正常阶段向早期旋转期转移和发射的模式变化。我们使用数据集确认了所有这三个发射模式,包括非移位脉冲的B(爆发)和Q(安静)模式以及155个脉冲的准周期性。我们还确定了一种新型的排放变化事件,该事件在事件期间在正常阶段具有发射。我们详细研究了这些发射模式的极化特性,发现它们都具有相似的极化角(PA)曲线,表明所有这三种模式的发射都来自相同的发射高度。
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.