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.

本研究拟借助帕克斯（Parkes）超宽频带（UWL）系统，对高活跃重复快速射电暴FRB 190520开展每两周一次的监测工作。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活跃快速射电暴（Fast Radio Burst, FRB），同时还呈现出极端的旋转测量（Rotation Measure, RM）变化特征，以及在2~3 GHz频段内的独特行为表现。这使得UWL系统成为针对该重复快速射电暴开展深度研究的理想观测设备。通过本观测计划，我们预期将探测到FRB 190520的大样本爆发事件；同时，我们将与500米口径球面射电望远镜（FAST）展开合作，依托超高灵敏度与超宽频带观测能力，对该源的局域环境、辐射特性、通量分布及偏振特性开展研究。