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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >The X-ray telescope onboard Suzaku
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The X-ray telescope onboard Suzaku

机译：朱雀号上的X射线望远镜

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We present the design parameters, production process, and in-flight performance of the X-ray telescope (XRT) onboard Suzaku. The imaging capability is significantly improved over the ASCA XRT, which had half-power diameters of 36, to 1'8-2'3 for all four XRT-I modules. The optical axes are found to be distributed within a radius of 1'3, which makes the observation efficiency of all the XRTs more than 97% at the XIS-default observing position. The vignetting over the XIS field of view predicted via ray-tracing coincides with that measured for observations of the Crab Nebula to within similar to 10%. Contemporaneous fits of a power law to all of the XIS spectra of the Crab Nebula taken at the two standard observing positions (XIS/HXD-default positions) gives a flux consistent with that obtained by Toor and Seward (1974, AJ, 79, 995) to within similar to 2%. The pre-collimator on the top of each XRT module successfully reduces the intensity of the stray light from the 20' and 50'-off directions down to the level of pre-flight expectations.
机译：我们将介绍朱雀号X射线望远镜（XRT）的设计参数，生产过程和飞行中的性能。成像能力比ASCA XRT显着提高，后者的半功率直径为36，对于所有四个XRT-I模块而言，均达到了1'8-2'3。发现光轴分布在1'3的半径内，这使得所有XRT在XIS默认观察位置的观察效率均超过97％。通过射线跟踪预测的XIS视场上的渐晕与对蟹状星云的观测所测得的相近，相差在10％之内。同时对两个标准观测位置（XIS / HXD默认位置）拍摄的蟹状星云的所有XIS谱进行幂律同时拟合，得出的通量与Toor和Seward（1974，AJ，79，995）获得的通量一致）到2％以内。每个XRT模块顶部的预准直仪成功地将来自20'和50'偏离方向的杂散光强度降低到飞行前期望水平。

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