Parkes observations for project P1183 semester 2023APRS_17

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）观测到，二者的同步观测时长可达1小时。我们已利用帕克斯望远镜超宽频段低接收机（Ultra-Wideband Low, UWL）的绿色观测时段对该源开展观测，总计探测到21次射电暴。其中2次射电暴拥有对应的同步FAST观测数据。仅有1次射电暴具备全极化（4-pol）数据集，且其亮度足够用于分析其偏振特性。因此，我们提议借助帕克斯望远镜UWL系统，以高时间分辨率与全极化观测模式，继续对FRB 20220529源开展监测。本次新增观测计划的目标如下：(1) 借助帕克斯UWL系统探测更多携带全极化信息的射电暴；(2) 借助帕克斯UWL系统探测更多可配套同步FAST观测的射电暴；(3) 依托帕克斯与FAST同步观测中探测到的更多射电暴，研究其辐射光谱；(4) 利用高时间分辨率数据集分析射电暴的微结构；(5) 探究重复射电暴的频率范围变化特性。