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Parkes observations for project P858 semester 2015APRS_BPSR_20

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Research Data Australia2024-12-14 收录
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https://researchdata.edu.au/parkes-observations-project-semester-2015aprsbpsr20/3377187
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SUPERB is a large-scale survey for pulsars and extragalactic radio bursts. It will uses optimised GPU codes to search for pulsars and fast radio bursts (FRBs), making discoveries in real time. Handling our data as it comes in is essential for the SKA Phase I era so this work applies directly to the high-data rates of next generation telescopes. The pulsars discovered will enable studies of the interstellar medium, allow us to more accurately constrain the MSP luminosity function (which informs estimates of the SKA yield of MSPs), tests of theories of gravity and several will contribute to the precision timing projects of the PPTA. The FRBs discovered will have much more associated information than all previous detections. Firstly the discovery lag will be ~1 second, rather than months/years. The Parkes observations will be shadowed by the Molonglo telescope to allow, for the first time, localisation of FRBs, and a host of optical and high-energy telescopes will then be triggered as appropriate. This is key for identifying FRB host galaxies, so as to solve the mystery of their progenitors. The survey will discover ~20 MSPs, ~100 slower pulsars and ~10 FRBs.

SUPERB巡天是一项针对脉冲星(pulsar)与河外射电暴的大规模巡天项目。该项目将采用优化后的图形处理器(Graphics Processing Unit, GPU)代码开展脉冲星与快速射电暴(fast radio bursts, FRBs)的搜寻工作,实现实时发现。在平方千米望远镜阵列(Square Kilometre Array, SKA)一期运行阶段,对实时传入的观测数据进行处理至关重要,因此本项目的技术方案可直接适配下一代望远镜的高数据速率场景。 本次巡天发现的脉冲星将助力星际介质研究,帮助我们更精准地限定毫秒脉冲星(millisecond pulsar, MSP)的光度函数(该函数可用于估算平方千米望远镜阵列可探测到的毫秒脉冲星数量),验证引力理论;其中部分脉冲星还将参与帕克斯脉冲星计时阵列(Parkes Pulsar Timing Array, PPTA)的高精度计时项目。 本次巡天发现的快速射电暴将拥有远超此前所有探测结果的关联信息。其一,暴源的发现延迟将仅约1秒,而非此前的数月乃至数年。本项目将依托莫朗格洛望远镜与帕克斯望远镜的掩蔽式联合观测方案,首次实现快速射电暴的精准定位;随后可根据观测需求触发一系列光学及高能望远镜开展后续跟进观测。 这对于确定快速射电暴的宿主星系至关重要,进而破解其起源之谜。 本次巡天将预计发现约20颗毫秒脉冲星、约100颗长周期脉冲星以及约10个快速射电暴。
提供机构:
Commonwealth Scientific and Industrial Research Organisation
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