arXiv 0809.36652008-09-22astro-ph

朱雀X射线成像光谱仪在轨电荷注入能标标定

Energy-Scale Calibration of the Suzaku X-Ray Imaging Spectrometer Using the Checker Flag Charge Injection Technique in Orbit

Midori Ozawa, Hideki Uchiyama, Hironori Matsumoto, Hiroshi Nakajima, Katsuji Koyama, Takeshi Go Tsuru, Masahiro Uchino, Hiroyuki Uchida, Kiyoshi Hayashida, Hiro… 展开作者

Midori Ozawa, Hideki Uchiyama, Hironori Matsumoto, Hiroshi Nakajima, Katsuji Koyama, Takeshi Go Tsuru, Masahiro Uchino, Hiroyuki Uchida, Kiyoshi Hayashida, Hiroshi Tsunemi, Hideyuki Mori, Aya Bamba, Masanobu Ozaki, Tadayasu Dotani, Takayoshi Kohmura, Yoshitaka Ishisaki, Hiroshi Murakami, Takeshi Kato, Takeshi Kitazono, Yuki Kimura, Kazuki Ogawa, Shunsuke Kawai, Koji Mori, Gregory Prigozhin, Steve Kissel, Eric Miller, Beverly LaMarr, Marshall Bautz

备注：: 8 pages, 10 figures, accepted for publication in PASJ (Suzaku 3rd special issue)

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摘要：

朱雀卫星搭载的X射线成像光谱仪（XIS）是一种X射线CCD相机系统，具有低本底、高量子效率和0.2-12 keV波段能量分辨率好等优越性能。然而，由于轨道辐射损伤，电荷转移效率（CTI）增加，因此XIS的能量规模和分辨率自2005年7月发射以来已经下降。CCD具有电荷注入结构，并且通过检查器标志电荷注入（CFCI）技术精确地测量每列的CTI和CTI的脉冲高度依赖性。我们精确的CTI校正提高了能量分辨率从230 eV到190 eV在5.9 keV在2006年12月。本文报道了CFCI在轨实验的CTI测量结果。使用CFCI结果，我们已经实现了与时间相关的能量尺度和分辨率的朱雀校准数据库。

英文摘要：

The X-ray Imaging Spectrometer (XIS) on board the Suzaku satellite is an X-ray CCD camera system that has superior performance such as a low background, high quantum efficiency, and good energy resolution in the 0.2-12 keV band. Because of the radiation damage in orbit, however, the charge transfer inefficiency (CTI) has increased, and hence the energy scale and resolution of the XIS has been degraded since the launch of July 2005. The CCD has a charge injection structure, and the CTI of each column and the pulse-height dependence of the CTI are precisely measured by a checker flag charge injection (CFCI) technique. Our precise CTI correction improved the energy resolution from 230 eV to 190 eV at 5.9 keV in December 2006. This paper reports the CTI measurements with the CFCI experiments in orbit. Using the CFCI results, we have implemented the time-dependent energy scale and resolution to the Suzaku calibration database.

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