Parkes observations for project P1183 semester 2023APRS_08

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.

一颗高能重复快速射电暴（Fast Radio Burst, FRB）20220529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）同时观测，单次同步观测时长最长可达1小时。
我们利用帕克斯望远镜UWL观测模式（Parkes UWL）的绿色通道时段对该源开展观测，共计探测到21次爆发事件。其中2次爆发拥有同步的FAST观测数据，仅有1次爆发携带四极化数据集（4-pol）且亮度足以用于分析其偏振特性。
据此，我们提出利用帕克斯望远镜UWL观测模式开展高时间分辨率与全极化观测，以持续监测FRB 20220529源。本次拟实施的新观测旨在达成以下五大目标：
1. 探测更多携带全极化信息的帕克斯UWL观测爆发事件；
2. 探测更多可同步开展FAST观测的帕克斯UWL观测爆发事件；
3. 依托帕克斯与FAST同步观测中获取的更多爆发事件，研究其辐射频谱特性；
4. 利用高时间分辨率数据集分析爆发的精细结构；
5. 研究重复快速射电暴的频率范围演化特征。