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arXiv 2004.04601astro-ph.HEastro-ph.IMhep-ph
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Parkes瞬变事件:I.单脉冲、初始结果和缺失FRB的数据库

Parkes transient events: I. Database of single pulses, initial results and missing FRBs

S. -B. Zhang, G. Hobbs, C. J. Russell, L. Toomey, S. Dai, J. Dempsey, R. N. Manchester, S. Johnston, L. Staveley-Smith, X. -F. Wu, D. Li, Y. -Y. Yang, S. -Q. Wa… 展开作者

S. -B. Zhang, G. Hobbs, C. J. Russell, L. Toomey, S. Dai, J. Dempsey, R. N. Manchester, S. Johnston, L. Staveley-Smith, X. -F. Wu, D. Li, Y. -Y. Yang, S. -Q. Wang, H. Qiu, R. Luo, C. Wang, C. Zhang, L. Zhang, R. Mandow

摘要:

帕克斯64米直径射电望远镜以高时间分辨率记录的大量观测结果可供公众查阅。我们已经重新处理了在帕克斯多波束接收器系统的前四年(从1997年到2001年)中获得的所有观测结果,以识别瞬态事件,并建立了一个数据库,记录了在此搜索过程中产生的568,736,756个脉冲候选者。我们发现了一个新的快速射电暴(FRB),FRB~010305,其色散测量值为350 $\pm$ 5\,\,cm $^{-3}\,$ pc,并探讨了为什么在2001年之前的数据中发现的FRB如此之少。在考虑了整个信道带宽和天空区域的色散拖尾后,发现FRB的数量与模型预测一致。我们还提出了五个单脉冲候选人从未知的来源,但与银河系的色散措施。我们从数据库中提取了各种各样的源,例如,可以将其用作正在开发的新软件的训练数据集,以在存在射频干扰的情况下搜索FRB。

英文摘要:

A large number of observations from the Parkes 64\,m-diameter radio telescope, recorded with high time resolution, are publicly available. We have re-processed all of the observations obtained during the first four years (from 1997 to 2001) of the Parkes Multibeam receiver system in order to identify transient events and have built a database that records the 568,736,756 pulse candidates generated during this search. We have discovered a new fast radio burst (FRB), FRB~010305, with a dispersion measure of 350$\pm$5\,\,cm$^{-3}\,$pc and explored why so few FRBs have been discovered in data prior to 2001. After accounting for the dispersion smearing across the channel bandwidth and the sky regions surveyed, the number of FRBs is found to be consistent with model predictions. We also present five single pulse candidates from unknown sources, but with Galactic dispersion measures. We extract a diverse range of sources from the database, which can be used, for example, as a training set of data for new software being developed to search for FRBs in the presence of radio frequency interference.

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