On-orbit performance of the X-ray telescopes and thermal wobbling of the Suzaku satellite

Yoshitomo Maeda, Masatoshi Ebara, Ryuichi Fujimoto, Takayuki Hayashi, Hirohiko Inoue, Yoshitaka Ishisaki, Hideyuki Mori, Shunsaku Okada, Kensuke Suzuki, Yasunobu Uchiyama, Peter J. Serlemitsos, Yang Soong, Kai Wing Chan, Takashi Okajima, John P. Lehan, Kei Itoh, Akiharu Itoh, Yushi Yokoyama, Yumi Itoh, Ryoko NakamuraManabu Ishida, Akira Hayakawa, Chiaki Inoue, Satoshi Okuma, Ren Kubota, Masaki Suzuki, Takeyuki Osawa, Koujun Yamashita, Hideyo Kunieda, Yuzuru Tawara, Yasushi Ogasaka, Akihiro Furuzawa, Keisuke Tamura, Ryo Shibata, Yoshito Haba, Masataka Naitou, Kazutami Misaki, Ryo Iizuka

研究成果: Article査読

抄録

We present the in-flight performance of the X-ray telescopes (XRTs) onboard Suzaku. The imaging capability is significantly improved over the ASCA XRT, which had half-power diameters of 3′.6, to 1′.8-2′.3 for all four XRT-I modules. Contemporaneous fits of a power law to all 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 & Seward (1974) to within ∼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. We also present the thermal wobbling of the satellite. The wobbling causes the alignment error between the XRT-XIS system and the attitude and orbit control system. The wobbling of the alignment is as large as ∼ larcmin. In the currently processed data, the absolute coordinate also has systematic uncertainty of up to ∼ larcmin.

本文言語English
ページ(範囲)322-325
ページ数4
ジャーナルProgress of Theoretical Physics Supplement
169
DOI
出版ステータスPublished - 2007
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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