Parkes observations for project P1101 semester 2023APRS_11

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.

我们提议借助帕克斯（Parkes）UWL系统，对高活跃重复快速射电暴（Fast Radio Burst，FRB）190520开展每两周一次的监测。基于当前的观测结果，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观测设备。通过本项目，我们预期将探测到FRB 190520的大量脉冲暴样本；同时我们将与500米口径球面射电望远镜（Five-hundred-meter Aperture Spherical radio Telescope，FAST）合作，以极高灵敏度在超宽频带范围内研究该暴的局域环境、辐射特性、能流密度分布及偏振特性。