Parkes observations for project P1183 semester 2023APRS_23

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.

一颗新的高能量重复快速射电暴（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（Parkes）望远镜共同观测，二者的同步观测时长可达1小时。我们依托帕克斯望远镜超宽频带低频接收机（Ultra-Wideband Low-frequency Receiver，UWL）项目的绿色通道观测时间对该源开展了观测，共计探测到21次爆发事件。其中2次爆发拥有同步开展的FAST对应观测数据，仅1次爆发具备四极化（4-pol）数据集且亮度足够用于偏振特性分析。因此，我们提议采用高时间分辨率与四极化观测模式，依托帕克斯望远镜UWL项目继续对快速射电暴20220529源开展监测。本次拟开展的新增观测旨在达成以下五大目标：
1. 借助帕克斯望远镜UWL项目，探测更多携带全极化信息的爆发事件；
2. 借助帕克斯望远镜UWL项目，探测更多可同步开展FAST对应观测的爆发事件；
3. 依托帕克斯与FAST同步观测中获取的更多爆发事件数据，研究其辐射光谱特性；
4. 利用高时间分辨率数据集，解析爆发的微结构特征；
5. 探究重复快速射电暴的频率范围变化规律。