Parkes observations for project P1345 semester 2024OCTS_14

This proposal aims to obtain timing solutions and constrain burst rates and spin down properties of a sample of new rotating radio transients (RRATs) discovered with the ASKAP CRAFT Coherent upgrade (CRACO) system. \n In the last 6-months of commissioning, CRACO discovered and localised 10 new RRATs, identified by their sporadic pulses with dispersion measures (DM) consistent with Galactic objects. \n \n We request 15h of Parkes time split into three 30min observations spanning 6-months for each target. \n This will allow us to constrain phase-coherent timing solutions given that we already have arcsec-precision interferometric localisations. \n Our main science goals are: \n 1) to measure their burst rates, periods, and spin-down properties; \n 2) to assess their nulling fraction and emission mechanism\n 3) to determine if the CRACO RRATs are different to the known RRATs population.

本提案旨在获取通过ASKAP CRAFT相干升级系统（CRACO）发现的一批新型旋转射电暂现源（rotating radio transients, RRATs）的定时解，并约束其爆发率与自转减速特性。
在系统调试的最后6个月内，CRACO发现并定位了10颗新型RRATs，这些源的零星脉冲对应的色散量（DM）与银河天体的色散特征相符。

我们申请为每颗目标分配总计15小时的帕克斯（Parkes）望远镜观测时间，将其拆分为3次、每次30分钟的观测，观测周期覆盖6个月。
依托已获取的角秒级精度干涉定位结果，我们将能够求解相位相干定时解。

我们的核心科学目标如下：
1. 测量这些源的爆发率、自转周期与自转减速特性；
2. 评估其消隐比例与辐射机制；
3. 探明CRACO发现的RRATs是否区别于已知的RRATs种群。