In-flight calibration of the Hitomi Soft X-ray Spectrometer. (2) Point spread function

被引：7

作者：

Maeda, Yoshitomo ^{[1
,2
]}

Sato, Toshiki ^{[3
]}

Hayashi, Takayuki ^{[4
,5
]}

Iizuka, Ryo ^{[1
]}

Angelini, Lorella ^{[4
]}

Asai, Ryota ^{[3
]}

Furuzawa, Akihiro ^{[6
]}

Kelley, Richard ^{[4
,7
]}

Koyama, Shu ^{[1
]}

Kurashima, Sho ^{[3
]}

Ishida, Manabu ^{[1
,2
]}

Mori, Hideyuki ^{[4
]}

Nakaniwa, Nozomi ^{[3
]}

Okajima, Takashi ^{[4
]}

Serlemitsos, Peter J. ^{[4
]}

Tsujimoto, Masahiro ^{[1
]}

Yaqoob, Tahir ^{[4
,7
]}

机构：

[1] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan

[2] Grad Univ Adv Studies, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan

[3] Tokyo Metropolitan Univ, 1-1 Minami Osawa, Hachioji, Tokyo 1920397, Japan

[4] NASA, Goddard Space Flight Ctr, Code 916, Greenbelt, MD 20771 USA

[5] Nagoya Univ, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648602, Japan

[6] Fujita Hlth Univ, 1-98 Dengakugakubo,Kutsukake Cho, Toyoake, Aichi 4701192, Japan

[7] Univ Maryland Baltimore Cty, Dept Phys, 1000 Hilltop Circle, Baltimore, MD 21250 USA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2018年 / 70卷 / 02期

关键词：

space vehicles: instruments; techniques: imaging spectroscopy; telescopes;

D O I：

10.1093/pasj/psx146

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results of inflight calibration of the point spread function of the Soft X-ray Telescope that focuses X-rays onto the pixel array of the Soft X-ray Spectrometer system. We make a full array image of a point-like source by extracting a pulsed component of the Crab nebula emission. Within the limited statistics afforded by an exposure time of only 6.9 ks and limited knowledge of the systematic uncertainties, we find that the raytracing model of 1.'2 half-power-diameter is consistent with an image of the observed event distributions across pixels. The ratio between the Crab pulsar image and the raytracing shows scatter from pixel to pixel that is 40% or less in all except one pixel. The pixel-to-pixel ratio has a spread of 20%, on average, for the 15 edge pixels, with an averaged statistical error of 17% (1 sigma). In the central 16 pixels, the corresponding ratio is 15% with an error of 6%.

引用

页数：14

共 50 条

[1] In-flight calibration of Hitomi Soft X-ray Spectrometer. (1) Background
Kilbourne, Caroline A.
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PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2018, 70 (02)
[2] In-flight calibration of Hitomi Soft X-ray Spectrometer. (3) Effective area
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