MeerTRAP发现的27个新旋转射电暂现源
Discovery of 27 new Rotating Radio Transients by MeerTRAP
浏览论文内容
中文总结 AI 辅助
本研究通过MeerTRAP项目在MeerKAT望远镜发现27个新旋转射电暂现源，对部分源完成定位、周期估算等分析，揭示其与经典脉冲星界限模糊，为银道面中子星研究提供新见解。
中文摘要 AI 辅助
我们介绍了通过MeerKAT望远镜上的 commensal MeerTRAP单脉冲搜索项目发现的27个新银道面暂现源。我们利用专用暂现缓存中捕获的数据成像，确定了其中14个源的位置，精度达到角秒级。我们使用MeerTRAP探测到的多个脉冲的到达时间，为8个源初步估算了周期，这些暂现源的周期在0.78秒至4秒之间。对于之前发布的MeerTRAP源MTP0040（PSR J1357-6507），我们利用其被报告以来探测到的新脉冲，能够提供其位置和周期。我们还估算了射电流量密度，并讨论了从 commensal 搜索探测中得出的爆发率。精确的图像域定位被用于后续观测和计时分析。此外，一些后续观测显示，其中4个新源具有类似普通脉冲星的脉冲行为，表明旋转射电暂现源与经典脉冲星之间的界限模糊。我们还给出了4个源的相干计时解，为了解它们的旋转特性及其在银道面中子星族中的位置提供了见解。
英文摘要
We present the discovery of 27 new Galactic transients made by the commensal MeerTRAP single pulse search programme at the MeerKAT telescope. We determine the location of 14 of these discoveries with arcsecond accuracy by imaging the data captured in the dedicated transient buffer. A preliminary estimate of the period was made for 8 sources using the arrival times of several pulses detected by MeerTRAP. The periods of these transients range between 0.78 s and 4 s. For the previously published MeerTRAP source MTP0040 (PSR J1357-6507), we are able to provide the position and period using new pulses detected since it was reported. We also estimate the radio fluences and discuss the burst rates derived from the commensal search detections. The accurate image-domain localizations were used to conduct follow-up observations and timing analysis. Furthermore, some follow-up observations revealed ordinary pulsar-like pulsed behavior for four of the new sources, illustrating the blurred separation between rotating radio transients and canonical pulsars. We also present coherent timing solutions for 4 sources, providing insight into their rotational properties and their place within the Galactic neutron star population.
