论文标题

Meertrap:实时的,共同的Meerkat调查中检测到的十二个银河快速瞬变

MeerTRAP: Twelve Galactic fast transients detected in a real-time, commensal MeerKAT survey

论文作者

Bezuidenhout, M. C., Barr, E., Caleb, M., Driessen, L. N., Jankowski, F., Kramer, M., Malenta, M., Morello, V., Rajwade, K., Sanidas, S., Stappers, B. W., Surnis, M.

论文摘要

Meertrap是一个使用Meerkat望远镜的实时不靶向搜索项目,可从快速无线电瞬变和脉冲星中找到单个脉冲。它是与Meerkat大型调查项目(LSP)共同执行的,该数据使用来自Meerkat的13.96〜M菜肴中的64个数据,在天空上形成数百个相干光束,每次都可以实时处理每种相干光束,以搜索毫秒的脉动。我们介绍了Meertrap发现的前十二个银河系来源,DMS的范围在33--381〜CM $^{ - 3} $中。一个来源可以根据假定的银河电子密度模型而是银河系或外层面。使用Meerkat,Lovell和Parkes射电望远镜进行的后续观察发现了十二个来源中有7个的重复脉冲。已经确定了四个来源的脉冲周期。另外四个来源可以使用绑定的阵列束定位方法的新实现将其定位于弧形级别。

MeerTRAP is a real-time untargeted search project using the MeerKAT telescope to find single pulses from fast radio transients and pulsars. It is performed commensally with the MeerKAT large survey projects (LSPs), using data from up to 64 of MeerKAT's 13.96~m dishes to form hundreds of coherent beams on sky, each of which is processed in real time to search for millisecond-duration pulses. We present the first twelve Galactic sources discovered by MeerTRAP, with DMs in the range of 33--381~pc~cm$^{-3}$. One source may be Galactic or extragalactic depending on the Galactic electron density model assumed. Follow-up observations performed with the MeerKAT, Lovell, and Parkes radio telescopes have detected repeat pulses from seven of the twelve sources. Pulse periods have been determined for four sources. Another four sources could be localised to the arcsecond-level using a novel implementation of the tied-array beam localisation method.

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