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.快速射电暴（Fast Radio Burst, FRB）20220529是一例高能重复暴，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）望远镜联合观测，二者的同步观测时长最高可达1小时。我们已利用帕克斯望远镜超宽低频（Ultra-Wideband Low, UWL）系统的绿色观测时段对该源开展观测，总计探测到21次爆发事件。其中2次爆发事件对应了同步开展的FAST观测。仅有1次爆发事件拥有四偏振（4-pol）数据集且亮度充足，可用于分析其偏振特性。据此，我们提议采用高时间分辨率与全偏振观测模式，依托帕克斯UWL系统继续对FRB 20220529源开展监测。本次拟开展的观测目标如下：(1) 借助帕克斯UWL系统探测更多携带全偏振信息的爆发事件；(2) 探测更多可对应同步FAST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数据，研究其辐射能谱；(4) 利用高时间分辨率数据集分析爆发的微结构特征；(5) 研究重复暴的频率范围演化特性。