Parkes observations for project P1183 semester 2023APRS_18

A new energetic repeating FRB 20220529 can be observed by both FAST and Parkes telescopes and the simultaneous observing time is up to one hour. We have observed this source using Parkes UWL green time and in total 21 bursts have been detected. Two bursts of them have the corresponding simultaneous FAST observations. Only one burst has 4-pol datasets and is bright enough to analyse the polarization properties. Therefore, we propose to continue the monitoring of the source of FRB 20220529 using the Parkes UWL with high-time resolution and 4-pol observation. The new proposed observation aims to: (1)detect more bursts by Parkes UWL with full polarization information; (2) detect more bursts by Parkes UWL with corresponding simultaneous FAST observations; (3) study the radiation spectrum by more bursts detected in simultaneous observations of Parkes and FAST; (4) study the burst microstructure using high time resolution datasets, and (5) study the frequency ranges changes of the repeating bursts.

一颗能量充沛的重复快速射电暴20220529（Fast Radio Burst, FRB）可被500米口径球面射电望远镜（Five-hundred-meter Aperture Spherical radio Telescope, FAST）与帕克斯望远镜（Parkes Telescope）观测，二者可实现最长达1小时的同步观测。我们已利用帕克斯超宽频段低接收机（Parkes Ultra-Wideband Low, UWL）的绿色观测时段对该源开展观测，累计探测到21次暴源信号。其中2次暴源信号具备对应同步FAST观测数据，仅1次暴源信号拥有全极化（full polarization, 4-pol）数据集且亮度足够，可用于分析其偏振特性。因此，我们提议采用帕克斯超宽频段低接收机，以高时间分辨率与全极化观测模式，持续对FRB 20220529源开展监测观测。本次拟实施的观测目标如下：(1)利用帕克斯超宽频段低接收机探测携带全极化信息的更多暴源信号；(2)利用帕克斯超宽频段低接收机探测可与FAST同步观测对应的更多暴源信号；(3)通过帕克斯与FAST同步观测获取的更多暴源信号研究其辐射光谱特性；(4)利用高时间分辨率观测数据研究暴源的微结构特征；(5)研究重复暴源的频率范围演化特性。