Parkes observations for project P944 semester 2017APRS_BPSR_04

We propose here to search for new young pulsars in the SMC. Our strategy is to target nine new, optically verified, SNR remnants from the XMM Newton survey of the SMC. Detecting a single pulsar associated with a SNR in the SMC will provide important insights about the nature of the pulsar population in the SMC and the progenitor stars that formed it. In addition finding a young pulsar in a binary with a massive star will contribute to our understanding of the evolution of high mass X-ray binaries (HMXBs) in different metallicity environments and different galaxies, as well as the formation rates of double neutron star binaries. Knowledge of the population of these sources will be crucial in the era of gravitational wave detections with Advanced Ligo and Virgo. Therefore it is essential that we make the deepest, most sensitive observations possible to either detect the young radio pulsars or place constraints on any radio emission associated with the candidate remnants. To achieve this we propose to take a nine hour integration per target, resulting in a limiting flux density of 0.016 mJy - ultimately improving the limiting flux density of previous SMC surveys by a factor of two.

我们在此提出一项在小麦哲伦星系（Small Magellanic Cloud，SMC）中搜寻新型年轻脉冲星的研究计划。本研究的观测策略将瞄准9个经光学证认的新超新星遗迹（Supernova Remnant，SNR），这些遗迹源自针对小麦哲伦星系的XMM-牛顿（XMM Newton）巡天项目。若在小麦哲伦星系中探测到与超新星遗迹相关的单颗脉冲星，将为我们理解该星系内的脉冲星族群及其前身星的本质提供关键认知。此外，若发现一颗与大质量恒星构成双星系统的年轻射电脉冲星（radio pulsars），将有助于我们认识不同金属丰度环境与不同星系中的大质量X射线双星（High Mass X-ray Binaries，HMXBs）演化过程，以及双中子星双星的形成速率。这类天体族群的相关数据，在先进LIGO（Advanced Ligo）与室女座干涉仪（Virgo）开展引力波探测的时代至关重要。因此，我们有必要开展最深邃、最灵敏的观测，以要么直接探测到年轻射电脉冲星，要么对候选遗迹相关的射电辐射设置严格的观测限制。为达成这一目标，我们提议为每个观测目标开展9小时的累计积分曝光，由此可将流量密度探测极限达到0.016毫央斯基（milli Jansky，mJy）——最终将此前小麦哲伦星系巡天的流量密度探测极限提升一倍。