Parkes observations for project P1101 semester 2023APRS_12

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.

我们提议利用帕克斯（Parkes）望远镜UWL系统，对极为活跃的重复快速射电暴（Fast Radio Burst，FRB）190520开展每两周一次的监测。当前观测结果表明，FRB 190520不仅是帕克斯望远镜可观测到的最活跃快速射电暴，还表现出极端的旋转量度（rotation measure, RM）变化，以及在2至3吉赫（GHz）频段下的独特行为特征。这使得UWL系统成为开展该重复快速射电暴深入研究的理想设备。通过本项目，我们有望探测到FRB 190520的大量爆发事件；同时，我们将与FAST（500米口径球面射电望远镜）开展合作，依托高灵敏度在超宽带宽下对该源的局部环境、辐射特性、能流密度分布及偏振特性展开研究。