Parkes observations for project P1101 semester 2023APRS_01

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超宽带（Parkes UWL）系统对极活跃的重复暴源FRB~190520开展每两周一次的监测。我们当前的观测表明，FRB~190520不仅是帕克斯望远镜可观测到的最活跃快速射电暴（FRB），还表现出极端的旋转量（RM）变化以及在2至3 GHz频段的独特行为。这使得UWL成为对该重复暴源进行深入研究的理想仪器。通过本项目，我们预期能探测到FRB~190520的大量爆发样本；并与FAST望远镜合作，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、流量分布及偏振特性。