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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)322-325
Number of pages4
JournalProgress of Theoretical Physics Supplement
Issue number169
DOIs
Publication statusPublished - 01-01-2007
Externally publishedYes

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telescopes
orbits
x rays
modules
alignment
flight characteristics
Crab nebula
attitude control
collimators
flight
causes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Maeda, Y., Ebara, M., Fujimoto, R., Hayashi, T., Inoue, H., Ishisaki, Y., ... Iizuka, R. (2007). On-orbit performance of the X-ray telescopes and thermal wobbling of the Suzaku satellite. Progress of Theoretical Physics Supplement, (169), 322-325. https://doi.org/10.1143/PTPS.169.322
Maeda, Yoshitomo ; Ebara, Masatoshi ; Fujimoto, Ryuichi ; Hayashi, Takayuki ; Inoue, Hirohiko ; Ishisaki, Yoshitaka ; Mori, Hideyuki ; Okada, Shunsaku ; Suzuki, Kensuke ; Uchiyama, Yasunobu ; Serlemitsos, Peter J. ; Soong, Yang ; Chan, Kai Wing ; Okajima, Takashi ; Lehan, John P. ; Itoh, Kei ; Itoh, Akiharu ; Yokoyama, Yushi ; Itoh, Yumi ; Nakamura, Ryoko ; Ishida, Manabu ; Hayakawa, Akira ; Inoue, Chiaki ; Okuma, Satoshi ; Kubota, Ren ; Suzuki, Masaki ; Osawa, Takeyuki ; Yamashita, Koujun ; Kunieda, Hideyo ; Tawara, Yuzuru ; Ogasaka, Yasushi ; Furuzawa, Akihiro ; Tamura, Keisuke ; Shibata, Ryo ; Haba, Yoshito ; Naitou, Masataka ; Misaki, Kazutami ; Iizuka, Ryo. / On-orbit performance of the X-ray telescopes and thermal wobbling of the Suzaku satellite. In: Progress of Theoretical Physics Supplement. 2007 ; No. 169. pp. 322-325.
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Maeda, Y, Ebara, M, Fujimoto, R, Hayashi, T, Inoue, H, Ishisaki, Y, Mori, H, Okada, S, Suzuki, K, Uchiyama, Y, Serlemitsos, PJ, Soong, Y, Chan, KW, Okajima, T, Lehan, JP, Itoh, K, Itoh, A, Yokoyama, Y, Itoh, Y, Nakamura, R, Ishida, M, Hayakawa, A, Inoue, C, Okuma, S, Kubota, R, Suzuki, M, Osawa, T, Yamashita, K, Kunieda, H, Tawara, Y, Ogasaka, Y, Furuzawa, A, Tamura, K, Shibata, R, Haba, Y, Naitou, M, Misaki, K & Iizuka, R 2007, 'On-orbit performance of the X-ray telescopes and thermal wobbling of the Suzaku satellite', Progress of Theoretical Physics Supplement, no. 169, pp. 322-325. https://doi.org/10.1143/PTPS.169.322

On-orbit performance of the X-ray telescopes and thermal wobbling of the Suzaku satellite. / Maeda, Yoshitomo; Ebara, Masatoshi; Fujimoto, Ryuichi; Hayashi, Takayuki; Inoue, Hirohiko; Ishisaki, Yoshitaka; Mori, Hideyuki; Okada, Shunsaku; Suzuki, Kensuke; Uchiyama, Yasunobu; Serlemitsos, Peter J.; Soong, Yang; Chan, Kai Wing; Okajima, Takashi; Lehan, John P.; Itoh, Kei; Itoh, Akiharu; Yokoyama, Yushi; Itoh, Yumi; Nakamura, Ryoko; Ishida, Manabu; Hayakawa, Akira; Inoue, Chiaki; Okuma, Satoshi; Kubota, Ren; Suzuki, Masaki; Osawa, Takeyuki; Yamashita, Koujun; Kunieda, Hideyo; Tawara, Yuzuru; Ogasaka, Yasushi; Furuzawa, Akihiro; Tamura, Keisuke; Shibata, Ryo; Haba, Yoshito; Naitou, Masataka; Misaki, Kazutami; Iizuka, Ryo.

In: Progress of Theoretical Physics Supplement, No. 169, 01.01.2007, p. 322-325.

Research output: Contribution to journalArticle

TY - JOUR

T1 - On-orbit performance of the X-ray telescopes and thermal wobbling of the Suzaku satellite

AU - Maeda, Yoshitomo

AU - Ebara, Masatoshi

AU - Fujimoto, Ryuichi

AU - Hayashi, Takayuki

AU - Inoue, Hirohiko

AU - Ishisaki, Yoshitaka

AU - Mori, Hideyuki

AU - Okada, Shunsaku

AU - Suzuki, Kensuke

AU - Uchiyama, Yasunobu

AU - Serlemitsos, Peter J.

AU - Soong, Yang

AU - Chan, Kai Wing

AU - Okajima, Takashi

AU - Lehan, John P.

AU - Itoh, Kei

AU - Itoh, Akiharu

AU - Yokoyama, Yushi

AU - Itoh, Yumi

AU - Nakamura, Ryoko

AU - Ishida, Manabu

AU - Hayakawa, Akira

AU - Inoue, Chiaki

AU - Okuma, Satoshi

AU - Kubota, Ren

AU - Suzuki, Masaki

AU - Osawa, Takeyuki

AU - Yamashita, Koujun

AU - Kunieda, Hideyo

AU - Tawara, Yuzuru

AU - Ogasaka, Yasushi

AU - Furuzawa, Akihiro

AU - Tamura, Keisuke

AU - Shibata, Ryo

AU - Haba, Yoshito

AU - Naitou, Masataka

AU - Misaki, Kazutami

AU - Iizuka, Ryo

PY - 2007/1/1

Y1 - 2007/1/1

N2 - 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.

AB - 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.

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