标题： 后十年白皮书：一项双卫星NASA-ESA暗能量/微透镜任务 显示英文标题

标题： Post-Decadal White Paper: A Dual-Satellite Dark-Energy/Microlensing NASA-ESA Mission

摘要： 科学、金融和政治因素的汇合表明，发射两个更简单且定义更明确的暗能量/微引力透镜卫星将比目前欧盟委员会（EUCLID）和宽视场红外巡天望远镜（WFIRST）的设计带来更快、更经济、更好的（并且更安全）的科学成果。 这两颗卫星，一颗由欧洲航天局（ESA）领导，另一颗由美国宇航局（NASA）领导，将被明确设计为执行单一双卫星暗能量/微引力透镜“任务”的互补功能。 其中一颗将是一个纯粹的光学广域相机，具有大格式和小像素，优化用于弱引力透镜效应探测。由于其简单的设计，可以由ESA在相对较短的时间内发射。 第二颗将是纯粹的红外卫星，配备边缘采样或欠采样的像素，由NASA发射。 由于预算限制，这颗卫星将在几年后发射。 这两颗卫星将在三种暗能量实验（弱透镜效应、重子振荡、超新星）以及微引力透镜行星搜索中互为补充。 签署的国际协议将保证NASA后续发射，并在此基础上确保美国和欧洲科学家对两个数据集的平等访问权。 显示英文摘要

摘要： A confluence of scientific, financial, and political factors imply that launching two simpler, more narrowly defined dark-energy/microlensing satellites will lead to faster, cheaper, better (and more secure) science than the present EUCLID and WFIRST designs. The two satellites, one led by ESA and the other by NASA, would be explicitly designed to perform complementary functions of a single, dual-satellite dark-energy/microlensing ``mission''. One would be a purely optical wide-field camera, with large format and small pixels, optimized for weak-lensing, which because of its simple design, could be launched by ESA on relatively short timescales. The second would be a purely infrared satellite with marginally-sampled or under-sampled pixels, launched by NASA. Because of budget constraints, this would be launched several years later. The two would complement one another in 3 dark energy experiments (weak lensing, baryon oscillations, supernovae) and also in microlensing planet searches. Signed international agreements would guarantee the later NASA launch, and on this basis equal access of both US and European scientists to both data sets.