The X-ray telescope onboard Suzaku

Peter J. Serlemitsos, Yang Soong, Kai Wing Chan, Takashi Okajima, John P. Lehan, Yoshitomo Maeda, Kei Itoh, Hideyuki Mori, Ryo Iizuka, Akiharu Itoh, Hirohiko Indue, Shunsaku Okada, Yushi Yokoyama, Yumi Itoh, Masatoshi Ebara, Ryoko Nakamura, Kensuke Suzuki, Manabu Ishida, Akira Hayakawa, Chiaki InoueSatoshi 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 Mlsakl

Research output: Contribution to journalArticle

321 Citations (Scopus)

Abstract

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 3.′6, 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 ∼ 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 ∼ 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.

Original languageEnglish
JournalPublications of the Astronomical Society of Japan
Volume59
Issue number1 SPEC. ISS.
Publication statusPublished - 08-04-2007
Externally publishedYes

Fingerprint

telescopes
Crab nebula
crab
x rays
modules
flight
vignetting
flight characteristics
ray tracing
collimators
field of view
power law
radii
parameter

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Serlemitsos, P. J., Soong, Y., Chan, K. W., Okajima, T., Lehan, J. P., Maeda, Y., ... Mlsakl, K. (2007). The X-ray telescope onboard Suzaku. Publications of the Astronomical Society of Japan, 59(1 SPEC. ISS.).
Serlemitsos, Peter J. ; Soong, Yang ; Chan, Kai Wing ; Okajima, Takashi ; Lehan, John P. ; Maeda, Yoshitomo ; Itoh, Kei ; Mori, Hideyuki ; Iizuka, Ryo ; Itoh, Akiharu ; Indue, Hirohiko ; Okada, Shunsaku ; Yokoyama, Yushi ; Itoh, Yumi ; Ebara, Masatoshi ; Nakamura, Ryoko ; Suzuki, Kensuke ; 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 ; Mlsakl, Kazutami. / The X-ray telescope onboard Suzaku. In: Publications of the Astronomical Society of Japan. 2007 ; Vol. 59, No. 1 SPEC. ISS.
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Serlemitsos, PJ, Soong, Y, Chan, KW, Okajima, T, Lehan, JP, Maeda, Y, Itoh, K, Mori, H, Iizuka, R, Itoh, A, Indue, H, Okada, S, Yokoyama, Y, Itoh, Y, Ebara, M, Nakamura, R, Suzuki, K, 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 & Mlsakl, K 2007, 'The X-ray telescope onboard Suzaku', Publications of the Astronomical Society of Japan, vol. 59, no. 1 SPEC. ISS..

The X-ray telescope onboard Suzaku. / Serlemitsos, Peter J.; Soong, Yang; Chan, Kai Wing; Okajima, Takashi; Lehan, John P.; Maeda, Yoshitomo; Itoh, Kei; Mori, Hideyuki; Iizuka, Ryo; Itoh, Akiharu; Indue, Hirohiko; Okada, Shunsaku; Yokoyama, Yushi; Itoh, Yumi; Ebara, Masatoshi; Nakamura, Ryoko; Suzuki, Kensuke; 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; Mlsakl, Kazutami.

In: Publications of the Astronomical Society of Japan, Vol. 59, No. 1 SPEC. ISS., 08.04.2007.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The X-ray telescope onboard Suzaku

AU - Serlemitsos, Peter J.

AU - Soong, Yang

AU - Chan, Kai Wing

AU - Okajima, Takashi

AU - Lehan, John P.

AU - Maeda, Yoshitomo

AU - Itoh, Kei

AU - Mori, Hideyuki

AU - Iizuka, Ryo

AU - Itoh, Akiharu

AU - Indue, Hirohiko

AU - Okada, Shunsaku

AU - Yokoyama, Yushi

AU - Itoh, Yumi

AU - Ebara, Masatoshi

AU - Nakamura, Ryoko

AU - Suzuki, Kensuke

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 - Mlsakl, Kazutami

PY - 2007/4/8

Y1 - 2007/4/8

N2 - 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 3.′6, 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 ∼ 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 ∼ 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.

AB - 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 3.′6, 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 ∼ 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 ∼ 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.

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Serlemitsos PJ, Soong Y, Chan KW, Okajima T, Lehan JP, Maeda Y et al. The X-ray telescope onboard Suzaku. Publications of the Astronomical Society of Japan. 2007 Apr 8;59(1 SPEC. ISS.).