Generation-X: mission and technology studies for an x-ray observatory vision mission
Generation-X: mission and technology studies for an x-ray observatory vision mission
复制标题
X 世代：X 射线天文台视觉任务的任务和技术研究
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Will Zhang
中科院分区：
文献类型：
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作者：
R. Cameron;M. Bautz;R. Brissenden;M. Elvis;G. Fabbiano;E. Figueroa;P. Gorenstein;R. Petre;P. Reid;D. Schwartz;N. White;Will Zhang
天体物理学的新领域是研究早期宇宙中的第一批恒星、星系和黑洞。这些天体超出了钱德拉等当前一代X射线望远镜的能力范围，因此X一代视觉使命被提议作为一个X射线天文台，能够探测这些最早的天体。对这种遥远物体的X射线成像和光谱学将需要具有大收集面积和高角分辨率的X射线望远镜。Generation-X概念在1 keV下有100 m2的收集面积（比Chandra大1000倍）和0.1角秒的角分辨率（比Chandra好几倍，比Constellation-X的分辨率目标好50倍）。基线使命涉及在日地L2运行的四台8 m直径望远镜。如此大的望远镜将需要机器人或人工辅助的飞行中组装。为了达到所需的有效面积与可发射的质量，非常轻的掠入射X射线光学必须开发，具有面密度比钱德拉低100倍，也许0.1毫米厚的镜子需要在轨图形控制。X一代可用的探测器套件应包括大面积高分辨率成像仪、低温成像光谱仪和光栅光谱仪。
The new frontier in astrophysics is the study of the very first stars, galaxies and black holes in the early Universe. These objects are beyond the grasp of the current generation of X-ray telescopes such as Chandra, and so the Generation-X Vision Mission has been proposed as an X-ray observatory which will be capable of detecting these earliest objects. Xray imaging and spectroscopy of such distant objects will require an X-ray telescope with large collecting area and high angular resolution. The Generation-X concept has 100 m2 collecting area at 1 keV (1000 times larger than Chandra) and 0.1 arcsecond angular resolution (several times better than Chandra and 50 times better than the resolution goal for Constellation-X). The baseline mission involves four 8 m diameter telescopes operating at Sun-Earth L2. Such large telescopes will require either robotic or human-assisted in-flight assembly. To achieve the required effective area with launchable mass, very lightweight grazing incidence X-ray optics must be developed, having an areal density 100 times lower than in Chandra, with perhaps 0.1 mm thick mirrors requiring on-orbit figure control. The suite of available detectors for Generation-X should include a large-area high resolution imager, a cryogenic imaging spectrometer and a grating spectrometer.