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Proceedings Paper

The Hitomi (ASTRO-H) Soft X-ray Telescope (SXT): current status of calibration
Author(s): Yoshitomo Maeda; Naomichi Kikuchi; Sho Kurashima; Manabu Ishida; Ryo Iizuka; Takayuki Hayashi; Takashi Okajima; Hironori Matsumoto; Ikuyuki Mitsuishi; Shigetaka Saji; Toshiki Sato; Sasagu Tachibana; Hideyuki Mori; Finn Christensen; Nicolai Brejnholt; Kiyofumi Nitta; Tomoya Uruga
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Paper Abstract

We report the atomic scattering factor in the 11.2–15.4 keV for the ASTRO-H Soft X-ray Telescope (SXT)9 obtained in the ground based measurements. The large effective area of the SXT covers above 10 keV. In fact, the flight data show the spectra of the celestical objects in the hard X-ray band. In order to model the area, the reflectivity measurements in the 11.2–15.4 keV band with the energy pitch of 0.4 – 0.7 eV were made in the synchrotron beamline Spring-8 BL01B1. We obtained atomic scattering factors f1 and f2 by the curve fitting to the reflectivities of our witness sample. The edges associated with the gold′ s L-I, II, and III transitions are identified, of which the depths are found to be roughly 60% shallower than those expected from the Henke’s atomic scattering factor.

Paper Details

Date Published: 29 August 2017
PDF: 8 pages
Proc. SPIE 10399, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII, 103990Q (29 August 2017); doi: 10.1117/12.2275605
Show Author Affiliations
Yoshitomo Maeda, Institute of Space and Astronautical Science (Japan)
Graduate Univ. of Advanced Studies (Japan)
Naomichi Kikuchi, Graduate Univ. of Advanced Studies (Japan)
Tokyo Metropolitan Univ. (Japan)
Sho Kurashima, Graduate Univ. of Advanced Studies (Japan)
Tokyo Metropolitan Univ. (Japan)
Manabu Ishida, Institute of Space and Astronautical Science (Japan)
Ryo Iizuka, Institute of Space and Astronautical Science (Japan)
Graduate Univ. of Advanced Studies (Japan)
Takayuki Hayashi, NASA Goddard Space Flight Ctr. (United States)
Nagoya Univ. (Japan)
Takashi Okajima, NASA Goddard Space Flight Ctr. (United States)
Hironori Matsumoto, Nagoya Univ. (Japan)
Ikuyuki Mitsuishi, Nagoya Univ. (Japan)
Shigetaka Saji, Nagoya Univ. (Japan)
Toshiki Sato, Graduate Univ. of Advanced Studies (Japan)
Tokyo Metropolitan Univ. (Japan)
Sasagu Tachibana, Nagoya Univ. (Japan)
Hideyuki Mori, NASA Goddard Space Flight Ctr. (United States)
Finn Christensen, DTU Space (Denmark)
Nicolai Brejnholt, Lawrence Livermore National Lab. (United States)
Kiyofumi Nitta, Japan Synchrotron Radiation Research Institute (JASRI) (Japan)
Tomoya Uruga, Japan Synchrotron Radiation Research Institute (JASRI) (Japan)


Published in SPIE Proceedings Vol. 10399:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII
Stephen L. O'Dell; Giovanni Pareschi, Editor(s)

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