论文标题
在PSR J1047-6709中检测巨型脉冲
Detection of giant pulses in PSR J1047-6709
论文作者
论文摘要
我们报告了使用Parkes 64 m射电望远镜在1369 MHz观察到的PSR J1047 $ - $ 6709的排放变化。该脉冲星显示了两个不同的排放状态：弱状态和明亮的发射状态。我们首次以明亮的状态检测到巨型脉冲（GPS）。我们发现脉冲宽度为0.6至2.6 ms的75 GP。 GPS的能量遵循指数$α= -3.26 \ PM0.22 $的幂律分布。最亮GP的峰值密度为19 JY，比平均脉冲曲线强110倍。 GP的平均轮廓的极化特性与能量在明亮状态下平均脉冲能的脉冲小于10倍的脉冲。这表明对它们的排放机制基本相同。我们的结果为脉冲星中GP的起源提供了新的见解。
We report the emission variations in PSR J1047$-$6709 observed at 1369 MHz using the Parkes 64 m radio telescope. This pulsar shows two distinct emission states: a weak state and a bright emission state. We detected giant pulses (GPs) in the bright state for the first time. We found 75 GPs with pulse width ranging from 0.6 to 2.6 ms. The energy of GPs follows a power-law distribution with the index $α=-3.26\pm0.22$. The peak flux density of the brightest GP is 19 Jy which is 110 times stronger than the mean pulse profile. The polarization properties of the average profile of GPs are similar to that of the pulses with energy less than 10 times average pulse energy in the bright state. This indicates that the emission mechanism is basically the same for them. Our results provide a new insight into the origin of the GPs in pulsars.
