TianQin项目：目前的科技进展
The TianQin project: current progress on science and technology
摘要：
天琴是一个计划中的天基引力波（GW）观测站，由三颗地球轨道卫星组成，轨道半径约为$10^5~{\rm km}$。这些卫星将形成一个等边三角形星座，其平面几乎垂直于黄道面。天琴的目标是探测$10^{-4}~{\rm Hz}$和$1~{\rm Hz}$之间的GWs，这些GWs可以由各种重要的天体物理和宇宙学来源产生，包括银河系超紧凑双星的螺旋，恒星质量黑洞双星的螺旋，极端质量比的螺旋，大质量黑洞双星的合并，以及可能的早期宇宙或奇异源（如宇宙弦）的能量过程。为了在2035年左右开始科学运行，一个名为0123计划的路线图正在被用来使天琴的关键技术成熟，并在地面上建设一系列研究设施。0123计划的两个重大项目正在实施。在此过程中，团队研制了新一代$17~{\rm cm}$单体空心立方角回复反射器，并于2018年5月21日随鹊桥卫星发射升空;新建了一座配备$1.2~{\rm m}$望远镜的激光测距站，并成功测距到月球上的所有五个回复反射器;“天琴一号”试验卫星已于2019年12月20日发射，第一轮测试结果表明，该卫星已超过其所有任务要求。
英文摘要：
TianQin is a planned space-based gravitational wave (GW) observatory consisting of three earth orbiting satellites with an orbital radius of about $10^5~{\rm km}$. The satellites will form a equilateral triangle constellation the plane of which is nearly perpendicular to the ecliptic plane. TianQin aims to detect GWs between $10^{-4}~{\rm Hz}$ and $1~{\rm Hz}$ that can be generated by a wide variety of important astrophysical and cosmological sources, including the inspiral of Galactic ultra-compact binaries, the inspiral of stellar-mass black hole binaries, extreme mass ratio inspirals, the merger of massive black hole binaries, and possibly the energetic processes in the very early universe or exotic sources such as cosmic strings. In order to start science operations around 2035, a roadmap called the 0123 plan is being used to bring the key technologies of TianQin to maturity, supported by the construction of a series of research facilities on the ground. Two major projects of the 0123 plan are being carried out. In this process, the team has created a new generation $17~{\rm cm}$ single-body hollow corner-cube retro-reflector which has been launched with the QueQiao satellite on 21 May 2018; a new laser ranging station equipped with a $1.2~{\rm m}$ telescope has been constructed and the station has successfully ranged to all the five retro-reflectors on the Moon; and the TianQin-1 experimental satellite has been launched on 20 December 2019 and the first round result shows that the satellite has exceeded all of its mission requirements.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
