论文标题
Chime/FRB/Pulsar的第二组PULSAR发现：14个旋转无线电瞬变和7个脉冲星
The second set of pulsar discoveries by CHIME/FRB/Pulsar: 14 Rotating Radio Transients and 7 pulsars
论文作者
论文摘要
加拿大氢图实验（Chime）是位于加拿大不列颠哥伦比亚省的射电望远镜。尽管仅保存了传入的银河事件的元数据，但大型FOV使Chime/FRB成为出色的脉冲星和旋转无线电瞬态（RRAT）查找机。我们已经开发了一条管道，以使用聚类算法DBSCAN搜索PULSAR/RRAT候选物。然后使用更敏感的钟声/脉冲仪器进行后续观察，能够每天的高度分辨率光谱观测值。我们已经开发了铃声/脉冲星单脉冲管道，以自动化循环/脉冲星搜索模式数据的处理。我们报告了21个新的银河系来源，其中有14个RRAT，6个孤立的长期脉冲星和1个二元系统。由于钟声/脉冲星的观察结果，我们为14个rrats中的8个以及所有常规的脉冲星和二进制系统获得了定时解决方案。 Notably we report that the binary system is in a long orbit of 412 days with a minimum companion mass of 0.1303 solar masses and no evidence of an optical companion within 10" of the pulsar position. This highlights that working synergistically with CHIME/FRB's large survey volume CHIME/Pulsar can obtain arc second localisations for low burst rate RRATs though pulsar timing. We find that the properties of our newly discovered RRAT与目前已知的人群的爆发率相比，其爆发率较低，这可能是由于调查偏见而不是基本人群所致。
The Canadian Hydrogen Mapping Experiment (CHIME) is a radio telescope located in British Columbia, Canada. The large FOV allows CHIME/FRB to be an exceptional pulsar and Rotating Radio Transient (RRAT) finding machine, despite saving only the metadata of incoming Galactic events. We have developed a pipeline to search for pulsar/RRAT candidates using DBSCAN, a clustering algorithm. Follow-up observations are then scheduled with the more sensitive CHIME/Pulsar instrument capable of near-daily high time resolution spectra observations. We have developed the CHIME/Pulsar Single Pulse Pipeline to automate the processing of CHIME/Pulsar search-mode data. We report the discovery of 21 new Galactic sources, with 14 RRATs, 6 isolated long-period pulsars and 1 binary system. Owing to CHIME/Pulsar's observations we have obtained timing solutions for 8 of the 14 RRATs along with all the regular pulsars and the binary system. Notably we report that the binary system is in a long orbit of 412 days with a minimum companion mass of 0.1303 solar masses and no evidence of an optical companion within 10" of the pulsar position. This highlights that working synergistically with CHIME/FRB's large survey volume CHIME/Pulsar can obtain arc second localisations for low burst rate RRATs though pulsar timing. We find that the properties of our newly discovered RRATs are consistent with those of the presently known population. They tend to have lower burst rates than those found in previous surveys, which is likely due to survey bias rather than the underlying population.
