Development of four-reflection X-ray telescope for the study ofmsmologicalwarm-hotintergaladcticmedium

用于研究大气暖热星系间介质的四反射X射线望远镜的研制

基本信息

批准号：
17204013
负责人：
TAWARA Yuzuru
金额：
$ 25.54万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17204013/
关键词：
X-ray X-ray telescope astrophysical hot plasma baryon large scale structure dark matter super-polishing X-ray imaging optics X線衛星 X線反射鏡レプリカ無電解ニッケル表面粗さ

项目摘要

The warm-hot intergalactic medium (WHIM) is an important probe to study large scale structure of the universe fomedby the dark matter, which consists of unknown elementary particles. WHIM is also important observation target to clarify the structure and the evolution of dark baryons, which have been hardly observed so far. In this research, we developed a new type of X-ray telescope to detect weak X-rays from WHIM At first we took four reflection mirror system as abase optics and established ray tracing code for analyzing these new optical systems including extended Wolter type I optics. Using this tool, we optimized telescope parameters such as focal length, diameters and length of element mirrors and minor surface materials to maximize performances such as an effective area, a field of view, GRASP and angular resolution under the condition of assumed satellite and detector structures. Based on this study we made a quadrant model of four-reflection telescope using segmented replica foil miner made by previously used method for Suzuki. Adding to this, we developed superpolished replica mandrel and multistage full shell minor substrate to get higher performance of a replica foil minor and reduce total number of element mirrors. On the mandrel, it was achieved that figure error was has than 0.5 μm and surface microtoughness was less than 1 nm. On the monolithic mirror substrate, we tried several methods and found that a direct machining method can be used to make such substrate with figure error of 10 μm Technologies developed in this research can be utilized to make telescopes for future satellite mission such as the DIOS

热层间培养基（WIM）是深色物质基本颗粒的重要探针，这也是阐明深度bary子的结构和演变的重要观察目标开发了一种新型的X射线望远镜，以检测到X射线的最初，我们将反射镜系统作为Abase Optics，并建立了射线追踪代码，用于分析包括沃尔特I型Optics（例如Ipers）的光学系统。焦点镜子的焦点和较小的表面材料，以最大程度地提高性能，例如，在聚集和探测器结构的条件下，抓地力和角度分辨率。 l较小的底物获得较高的仿制箔的性能，并且元素的总数超过0.5μm，而表面的微底性小于1 nm。可以用来制作未来卫星任务的望远镜，例如Dios