Parkes observations for project P944 semester 2017APRS_BPSR_01

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.

我们在此提出在小麦哲伦星系（Small Magellanic Cloud, SMC）中搜寻新的年轻脉冲星的研究计划。本研究的观测策略为，以XMM-牛顿（XMM-Newton）巡天项目在小麦哲伦星系中发现的9个已完成光学证认的新超新星遗迹（Supernova Remnant, SNR）作为观测目标。若在小麦哲伦星系中探测到与超新星遗迹成协的脉冲星，将有助于我们深入理解该星系内脉冲星族群的特性，以及形成该遗迹的前身星的相关性质。此外，若发现与大质量恒星组成双星系统的年轻脉冲星，将助力我们理解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，以及双中子星双星系统的形成率。在先进激光干涉引力波天文台（Advanced LIGO）与室女座干涉仪（Virgo）开展引力波探测的时代，掌握这类源的族群分布情况至关重要。因此，我们有必要开展当前条件下最深灵敏度的观测，要么探测到年轻射电脉冲星，要么对候选遗迹相关的射电辐射给出严格的约束。为达成这一目标，我们计划为每个观测目标开展9小时的积分观测，最终将极限流强密度提升至0.016毫央斯基（milli-Jansky, mJy）——这一灵敏度相较此前小麦哲伦星系相关巡天项目的极限流强密度提升了一倍。