Parkes observations for project P1101 semester 2023OCTS_02

We propose to continue our fortnightly monitoring of a very active repeater, FRB~190520, with the Parkes UWL system. Our current observations show that FRB~190520 is not only the most active FRB that can be observed with Parkes, but also shows extreme rotation measure (RM) variations and unique behavior at 2 to 3 GHz frequency. This makes UWL the ideal instrument to carry out in-depth studies of this repeating FRB. With this program, we expect to detect a large sample of bursts from FRB~190520, and in collaboration with the FAST telescope, we will study the local environment, emission properties, fluence distributions, and polarisation properties over an extremely wide bandwidth with high sensitivity.

我们提议利用帕克斯超宽带系统（Parkes UWL system）继续对活跃重复器FRB~190520进行每两周一次的监测。我们当前的观测结果表明，FRB~190520不仅是帕克斯望远镜可观测范围内最活跃的快速射电暴（Fast Radio Burst, FRB），还表现出极端的旋转量度（rotation measure, RM）变化，以及在2至3 GHz频段的独特行为。这使得UWL成为对该重复型FRB开展深入研究的理想仪器。通过本项目，我们预计将探测到FRB~190520的大量爆发样本；并与500米口径球面射电望远镜（Five-hundred-meter Aperture Spherical Telescope, FAST）合作，在极宽的带宽范围内以高灵敏度研究其局域环境、辐射特性、流量密度分布及偏振特性。