Parkes observations for project P1124 semester 2021OCTS_08

The progenitors of Fast Radio Bursts (FRBs) have been highly debated in past decade. The discovery of a bright radio burst from a Galactic magnetar, SGR 1935+2154, implies that some of faint FRBs can originate from normal magnetars. A recent short gamma-ray bursts (GRB 200415A) from a nearby galaxy turned out to be caused by magnetar giant flare. If a fraction of SGRBs and repeating FRBs share similar magnetars as progenitors, we could expect to detect fast radio transients from some suspicious magnetar-driven SGRBs. Here we propose to observe two sources with possible magnetar progenitors, in particular, a total observing time of 32 hours is requested. If detections made, we would confirm the association of progenitors of both FRBs and SGRBs and directly uncover the origin of extragalactic FRBs for at least one population.

快速射电暴（Fast Radio Bursts, FRBs）的前身天体在过去十年间一直是学界热议的核心议题。银河系磁星SGR 1935+2154爆发的明亮射电暴的发现，表明部分微弱的快速射电暴可源自普通磁星。近期来自邻近星系的短伽马射线暴（short gamma-ray bursts, GRB 200415A）被证实由磁星巨耀变引发。若部分短伽马射线暴（SGRBs）与重复快速射电暴共享同类磁星作为前身天体，我们有望在部分疑似磁星驱动的短伽马射线暴中探测到快速射电暂现源。为此，我们提出对两个具有潜在磁星前身天体的源进行观测，总观测时长申请为32小时。若成功探测，我们将证实快速射电暴与短伽马射线暴的前身天体存在关联，并直接阐明至少一类河外快速射电暴的起源机制。