Energy-Scale Calibration of the Suzaku X-Ray Imaging Spectrometer Using the Checker Flag Charge-Injection Technique in Orbit
| Autor: | Koji Mori, Hiroyuki Uchida, Kazuki Ogawa, Yoshitaka Ishisaki, Beverly LaMarr, Hideki Uchiyama, Takayoshi Kohmura, Hideyuki Mori, Masahiro Uchino, Marshall W. Bautz, Tadayasu Dotani, Kiyoshi Hayashida, Takeshi Go Tsuru, Hiroshi Nakajima, Katsuji Koyama, Yuki Kimura, Hiroshi Murakami, Hiroshi Tsunemi, Gregory Y. Prigozhin, Aya Bamba, Steve Kissel, Eric D. Miller, Masanobu Ozaki, Midori Ozawa, Hironori Matsumoto, Shunsuke Kawai, Takeshi Kato, Takeshi Kitazono |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Physics
X-ray CCDs instrumentation: detectors Physics::Instrumentation and Detectors business.industry Astrophysics::High Energy Astrophysical Phenomena Resolution (electron density) Astrophysics::Instrumentation and Methods for Astrophysics Imaging spectrometer X-ray Astronomy and Astrophysics Optics Space and Planetary Science Orbit (dynamics) Calibration Quantum efficiency Satellite business techniques: spectroscopic Energy (signal processing) |
| Zdroj: | Publications of the Astronomical Society of Japan. 61:S1-S7 |
| ISSN: | 2053-051X 0004-6264 |
| DOI: | 10.1093/pasj/61.sp1.s1 |
| Popis: | The X-ray Imaging Spectrometer (XIS) aboard 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 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 in 2005 July. 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 2006 December. This paper reports on 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|