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Mission Simulation of the ASTROD-GW Formation

机译:ASTEROID-GW组的任务模拟

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ASTROD-GW (Astrodynamical Space Test of Relativity using Optical Devices optimized for Gravitation Wavedetection) is to focus on the goal of detection of GWs. The mission orbits of the 3 spacecraft forming a nearlyequilateral triangular array are chosen to be near the Sun-Earth Lagrange points L3, L4 and L5. The 3 spacecraftrange interferometrically with one another with arm length about 260 million kilometers. With 52 times longer inarm length compared to that of LISA, the strain detection sensitivity is 52 times better toward larger wavelength.The scientific aim is focused for gravitational wave detection at low frequency. The science goals includedetection of GWs from MBHs, and Extreme-Mass-Ratio Black Hole Inspirals (EMRI), and using theseobservations to find the evolution of the equation of state of dark energy and to explore the co-evolution ofmassive black holes with galaxies. In this paper, we design the transfer orbits of the spacecraft from theseparations of the launch vehicles to the mission orbits. Each spacecraft is implemented with a high efficientseparable propulsion module for large delta-V maneuvers for the transfer orbits. Each payload includes adrag-free system with micronewton thrusters in the science mode. The differences of the arm lengths of thetriangular formation are evaluated to meet the mission requirements.
机译:ASTROD-GW(相对论的天文学动态空间测试,使用针对引力波优化的光学设备 检测)的重点是GW的检测目标。 3颗航天器的任务轨道几乎形成了 等边三角形阵列选择为靠近太阳地球拉格朗日点L3,L4和L5。 3号飞船 互相干涉测距,臂长约2.6亿公里。延长52倍 与LISA的臂长相比,对于较大的波长,应变检测灵敏度高52倍。 科学目的集中在低频引力波检测。科学目标包括 检测MBH和超质量比黑洞吸气管(EMRI)中的GW,并使用这些 观察以发现暗能量状态方程的演化,并探索暗能量的共同演化 巨大的黑洞与星系。在本文中,我们从太空飞船设计了航天器的转移轨道 运载火箭与任务轨道的分离。每个航天器的执行效率都很高 可分离的推进模块,用于大三角V操纵的转移轨道。每个有效载荷包括一个 在科学模式下,具有微牛顿推进器的无阻力系统。手臂长度的差异 评估三角形编队以满足任务要求。

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