In-Flight Calibration of Hitomi Soft X-Ray Spectrometer. (1) Background
The X-Ray Spectrometer (XRS) instrument of Suzaku provided the first measurement of the non-X-ray background (NXB) of an X-ray calorimeter spectrometer, but the data set was limited. The Soft X-ray Spectrometer (SXS) instrument of Hitomi was able to provide a more detailed picture of X-ray calorimet...
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| Veröffentlicht in: | Publications of the Astronomical Society of Japan 2018-03, Vol.70 (2) |
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| creator | Kilbourne, Caroline A. Sawada, Makoto Tsujimoto, Masahiro Angelini, Lorella Boyce, Kevin R. Eckart, Megan Fujimoto, Ryuichi Ishisaki, Yoshitaka Kelley, Richard Koyama, Shu Leutenegger, Maurice A. Loewenstein, Michael McCammon, Dan Mitsuda, Kazuhisa Nakashima, Shinya Porter, Frederick S. Seta, Hiromi Takei, Yoh Tashiro, Makoto S. Terada, Yukikatsu Yamada, Shinya Yamasaki, Noriko Y. |
| description | The X-Ray Spectrometer (XRS) instrument of Suzaku provided the first measurement of the non-X-ray background (NXB) of an X-ray calorimeter spectrometer, but the data set was limited. The Soft X-ray Spectrometer (SXS) instrument of Hitomi was able to provide a more detailed picture of X-ray calorimeter background, with more than 360 ks of data while pointed at the Earth, and a comparable amount of blank-sky data. These data are important not only for analyzing SXS science data, but also for categorizing the contributions to the NXB in X-ray calorimeters as a class. In this paper, we present the contributions to the SXS NXB, the types and effectiveness of the screening, the interaction of the screening with the broad-band redistribution, and the residual background spectrum as a function of magnetic cut-off rigidity. The orbit-averaged SXS NXB in the range 0.3-12 keV was 4 × 10(exp −2) counts s(exp −1) -sq cm. This very low background in combination with groundbreaking spectral resolution gave SXS unprecedented sensitivity to weak spectral lines. |
| doi_str_mv | 10.1093/pasj/psx139 |
| format | Article |
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| source | Oxford University Press Journals All Titles (1996-Current); Freely Accessible Japanese Titles; NASA Technical Reports Server |
| subjects | Instrumentation And Photography |
| title | In-Flight Calibration of Hitomi Soft X-Ray Spectrometer. (1) Background |
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