Broadband x-ray imaging mission NeXT
Broadband x-ray imaging mission NeXT
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NeXT 宽带 X 射线成像任务
DOI：
10.1117/12.461508
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Tadayuki Takahashi
中科院分区：
文献类型：
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作者：
Y. Tawara;H. Kunieda;H. Inoue;K. Mitsuda;Y. Ogasaka;Tadayuki Takahashi
21世纪世纪的主要研究领域之一是50 keV或100 keV以下的硬X射线天空。在10 keV以上，热分量开始迅速衰减，然后非热功率定律连续体成为主导。例如，一些SNR和Galerkin簇表现出大量的非热成分，这表明高能电子。我们希望通过观察硬X射线图像和它们的光谱来研究这种高能粒子的加速机制。为了在高达50 keV的硬X射线范围内进行成像观测，超镜硬X射线望远镜是最有前途的。我们研究了在高通量X射线望远镜的镜壳上安装Pt/C超反射镜。第一个卫星使命提出的超镜硬X射线望远镜是我们的新X射线望远镜使命（NeXT）在日本将于2010年发射。6-7超镜面望远镜将安装在一个可扩展的光具座的顶部。混合X射线成像仪将放置在焦平面上，观察高达50 keV的硬X射线图像，CdTe像素探测器位于薄CCD下方，用于软X射线成像。对于高分辨率光谱学，TES型量热计被认为没有制冷剂。非成像硬X射线和软伽马射线探测器的研究，以达到前所未有的灵敏度之间的50和300千电子伏。NeXT将成为硬X射线天文学的一种开拓者，不仅在技术上，而且在科学上。
One of the major fields to be explored in the 21st century is the hard X-ray sky up to 50 keV or 100 keV. Above 10 keV, thermal components start to decay rapidly and then non-thermal power law continua become dominant. For example, some of SNR and Cluster of Galaxies exhibit substantial non-thermal components, which suggest high energy electrons. We would like to investigate acceleration mechanisms of such high energy particles by observing hard X-ray images and their spectra. In order to perform imaging observations in hard X-ray range up to 50 keV, supermirror hard X-ray telescopes are most promising. We have studied to put Pt/C supermirror on the mirror shells of a high throughput X-ray telescope. The first satellite mission proposed with the supermirror hard X-ray telescope is our New X-ray Telescope mission (NeXT) in Japan to be launched 2010. 6-7 supermirror telescopes will be installed at the top of an extensible optical bench. The hybrid X-ray imager will be placed on the focal plane to observe hard X-ray images up to 50 keV with CdTe pixel detector underneath a thin CCD for soft X-ray imaging. For high resolution spectroscopy, TES type calorimeters are considered without cryogen. Non-imaging hard X-ray and soft gamma ray detector is studied to achieve unprecedented sensitivity between 50 and 300 keV. NeXT will be a sort of pathfinder of hard X-ray astronomy not only technically but also scientifically.