论文标题
快速探索PSR J0628+0909的单脉冲行为
Exploring the single-pulse behaviours of PSR J0628+0909 with FAST
论文作者
论文摘要
自2006年以来，已经发现了100多个旋转无线电瞬变（RRAT）。但是，尚不清楚rrats是否在空状态下辐射。 PSR J0628+0909已分类为RRAT。在本文中，我们研究了PSR J0628+0909的单个脉冲和集成的脉冲曲线，以检查我们是否可以检测到无效状态下的脉冲无线电发射。我们还旨在研究RRAT的两极分化及其与普通Pulsar人群的关系。我们使用了五百米的光圈球形射电望远镜（快速）在频率范围内观察PSR J0628+0909。我们搜索了强烈的单个脉冲，并在rrat nulling状态下寻找脉冲发射。测量了极化曲线，单脉冲能量分布和等待时间统计。 Faraday旋转度量和分散度量值随当前观察结果进行了更新。单脉冲极化行为表现出巨大的多样性，类似于脉冲星的情况。基于综合脉冲曲线和单脉冲能量统计，我们认为除了PSR J0628+0909的瞬时爆发发射外，还存在连续的脉冲星样发射。我们发现脉冲等待时间与脉冲能量无关，并得出结论，rrat的强瞬态发射不是通过能量存储释放机制产生的。
More than 100 rotating radio transients (RRATs) have been discovered since 2006. However, it is unclear whether RRATs radiate in the nulling states. PSR J0628+0909 has been classified as an RRAT. In this paper, we study the single pulses and integrated pulse profile of PSR J0628+0909 to check whether we can detect pulsed radio emission in the nulling states. We also aim to study the polarization of the RRAT and its relationship to the general pulsar population. We used the Five-hundred-meter Aperture Spherical radio Telescope (FAST) to observe PSR J0628+0909 in the frequency range from 1.0 to 1.5 GHz. We searched for strong single pulses and looked for pulsed emission in the RRAT nulling states. Polarisation profiles, the single-pulse energy distribution, and waiting-time statistics were measured. The Faraday rotation measure and dispersion measure values are updated with the current observation. The single-pulse polarisation behaviours show great diversity, similar to the case of pulsars. Based on the integrated pulse profile and single-pulse energy statistics, we argue that continuous pulsar-like emission exists in addition to the transient-like burst emission for PSR J0628+0909. We find that the pulse waiting time is not correlated with the pulse energy and conclude that the strong transient emission of RRAT is not generated by the energy store-release mechanism.
