Parkes observations for project P1101 semester 2022OCTS_04

We propose to carry out 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.

本研究拟采用帕克斯UWL系统（Parkes UWL system）对高活跃重复快速射电暴FRB 190520开展双周监测工作。现有观测结果显示，FRB 190520不仅是帕克斯望远镜可观测到的最为活跃的快速射电暴，同时还展现出极端的旋转量度（rotation measure, RM）变化以及2~3 GHz频段下的独特辐射行为。这使得UWL成为开展该重复快速射电暴深度研究的理想仪器。通过本监测项目，我们预期将探测到FRB 190520的大量暴射样本；同时将与500米口径球面射电望远镜（FAST）开展合作，依托高灵敏度与超宽频带观测条件，对该暴源的局域环境、辐射特性、能流密度分布以及偏振特性展开研究。