Journal article
Astronomical Telescopes + Instrumentation, 2024
APA
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Mori, K., Tomida, H., Nakajima, H., Okajima, T., Noda, H., Uchida, H., … Hayashida, K. (2024). Status of Xtend telescope onboard X-Ray Imaging and Spectroscopy Mission (XRISM). Astronomical Telescopes + Instrumentation.
Chicago/Turabian
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Mori, K., H. Tomida, H. Nakajima, T. Okajima, H. Noda, H. Uchida, Hiromasa Suzuki, et al. “Status of Xtend Telescope Onboard X-Ray Imaging and Spectroscopy Mission (XRISM).” Astronomical Telescopes + Instrumentation (2024).
MLA
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Mori, K., et al. “Status of Xtend Telescope Onboard X-Ray Imaging and Spectroscopy Mission (XRISM).” Astronomical Telescopes + Instrumentation, 2024.
BibTeX Click to copy
@article{k2024a,
title = {Status of Xtend telescope onboard X-Ray Imaging and Spectroscopy Mission (XRISM)},
year = {2024},
journal = {Astronomical Telescopes + Instrumentation},
author = {Mori, K. and Tomida, H. and Nakajima, H. and Okajima, T. and Noda, H. and Uchida, H. and Suzuki, Hiromasa and Kobayashi, S. and Yoneyama, T. and Hagino, Kouichi and Nobukawa, K. and Tanaka, Takaaki and Murakami, Hiroshi and Uchiyama, H. and Nobukawa, M. and Matsumoto, Hironori and Tsuru, T. and Yamauchi, M. and Hatsukade, I. and Odaka, H. and Kohmura, T. and Yamaoka, K. and Ishida, Manabu and Maeda, Y. and Hayashi, T. and Tamura, Keisuke and Boissay-Malaquin, R. and Sato, Toshiki and Yoshida, Tessei and Kanemaru, Y. and Hiraga, J. and Dotani, T. and Ozaki, M. and Tsunemi, H. and Inoue, Shun and Azuma, Ryuishi and Asahina, Yoh and Nakamura, S. and Kamei, Takamitsu and Fukuda, Masahiro and Asakura, K. and Yoshimoto, M. and Ode, Yuichi and Hakamata, T. and Aoyagi, M. and Shima, Kohei and Aoki, Y. and Ito, Yamato and Aoki, Daiki and Fujisawa, Kaito and Shimizu, Yasuyuki and Higuchi, Mayu and Miyazaki, Keitaro and Kusunoki, Kohei and Otsuka, Yoshinori and Yokosu, Haruhiko and Yonemaru, Wakana and Ichikawa, Kazuhiro and Nakano, Hanako and Takemoto, Reo and Matsushima, Tsukasa and Hayashida, K.}
}
Xtend is one of the two telescopes onboard the X-ray imaging and spectroscopy mission (XRISM), which was launched on September 7th, 2023. Xtend comprises the Soft X-ray Imager (SXI), an X-ray CCD camera, and the X-ray Mirror Assembly (XMA), a thin-foil-nested conically approximated Wolter-I optics. A large field of view of 38′ × 38′ over the energy range from 0.4 to 13 keV is realized by the combination of the SXI and XMA with a focal length of 5.6 m. The SXI employs four P-channel, back-illuminated type CCDs with a thick depletion layer of 200 μm. The four CCD chips are arranged in a 2×2 grid and cooled down to −110°C with a single-stage Stirling cooler. Before the launch of XRISM, we conducted a month-long spacecraft thermal vacuum test. The performance verification of the SXI was successfully carried out in a course of multiple thermal cycles of the spacecraft. About a month after the launch of XRISM, the SXI was carefully activated and the soundness of its functionality was checked by a step-by-step process. Commissioning observations followed the initial operation. We here present pre- and post-launch results verifying the Xtend performance. All the in-orbit performances are consistent with those measured on ground and satisfy the mission requirement. Extensive calibration studies are ongoing.