Parkes observations for project P1183 semester 2023APRS_04

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.

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（Parkes）望远镜同时观测，单次同步观测时长可达1小时。我们已利用帕克斯超宽低频（Ultra-Wideband Low，UWL）观测系统的绿色观测时段对该源开展观测，累计探测到21次爆发事件。其中2次爆发事件拥有对应的同步FAST观测数据；仅有1次爆发事件拥有四偏振（4-pol）数据集，且亮度足够用于偏振特性分析。据此，我们提议依托帕克斯超宽低频观测系统，采用高时间分辨率与四偏振观测模式，继续对快速射电暴20220529源进行监测。本次拟实施的观测目标如下：(1) 借助帕克斯超宽低频观测系统探测更多携带完整偏振信息的爆发事件；(2) 借助帕克斯超宽低频观测系统探测更多可同步开展FAST观测的爆发事件；(3) 利用帕克斯与FAST同步观测获得的更多爆发事件数据，研究其辐射光谱特性；(4) 借助高时间分辨率数据集分析爆发事件的精细结构；(5) 研究重复爆发事件的频率范围演化规律。