射电天文研究室知识库

中国已经建设、正在建设和将要建设成更多的射电望远镜,本文着眼于讨论这些望远镜在引力波直接探测方面的潜在突破.其中,基于最新的脉冲星噪声参数和望远镜设计指标,计算了使用不同射电望远镜以及他们的组合开展脉冲星测时观测的技术能力,在此基础上进一步计算并讨论了利用这些望远镜开展脉冲星测时阵列的可能性及其引力波探测的能力预期.研究发现,大型望远镜如贵州500m口径球面射电望远镜和计划中的新疆奇台110m全可动望远镜的配合将大幅度提高现有国际脉冲星阵列测时能力,建成这些望远镜之后,极有可能在短期内获得重大突破.

China has built, has been building, and will have built radio telescopes. Based on the most up-to-date pulsar noise measurements and design specifications of telescopes, we focus here on investigating the capability of pulsar timing observation using individual telescopes as well as their combination. We also calculate and discuss the feasibility to create the Chinese pulsar timing array project and the expectation for gravitational wave detection. As one will note, combination of large system, such as Five-hundred-metre Aperture Spherical radio Telescope (FAST) at Guizhou and Qitai 110 m fully steerable radio telescope at Xinjiang (QTT), will significantly increase the capability of current international pulsar timing array. We thus expect the breakthroughs in the FAST-QTT era.