The Hitomi (ASTRO-H) hard X-ray telescope (HXT): Current status of calibration

Hisamitsu Awaki; Hironori Matsumoto; Manabu Ishida; Akihiro Furuzawa; Shigeo Yamauchi; Yoshitomo Maeda; Hideyo Kunieda; Yoshito Haba; Takayuki Hayashi; Ryo Iizuka; Kazunori Ishibashi; Ikuyuki Mitsuishi; Takuya Miyazawa; Hideyuki Mori; Takashi Okajima; Satoshi Sugita; Keisuke Tamura; Yuzuru Tawara; Tessei Yoshida

doi:10.1117/12.2272844

The Hitomi (ASTRO-H) hard X-ray telescope (HXT): Current status of calibration

Hisamitsu Awaki, Hironori Matsumoto, Manabu Ishida, Akihiro Furuzawa, Shigeo Yamauchi, Yoshitomo Maeda, Hideyo Kunieda, Yoshito Haba, Takayuki Hayashi, Ryo Iizuka, Kazunori Ishibashi, Ikuyuki Mitsuishi, Takuya Miyazawa, Hideyuki Mori, Takashi Okajima, Satoshi Sugita, Keisuke Tamura, Yuzuru Tawara, Tessei Yoshida

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

The Japanese X-ray Astronomy Satellite, Hitomi (ASTRO-H) carried two hard X-ray telescopes (HXT), covering the energy band from 5 keV to 80 keV. In the initial functional verification phase of the onboard instruments, G21.5-0.9 and Crab nebula were observed with HXT. The data of G21.5-0.9 observation indicated that the hard X-ray imaging system worked well. Detail calibration of the Hitomi HXTs was performed with the observation data of Crab nebula. We extracted X-ray images of the Crab pulsar excluding the nebular emission, and confirmed that the imaging performance in orbit was satisfied with the requirement of the HXT. The 8-80 keV Crab spectrum was well fitted with a power-law model with the absorbed column of N^H=3×10²¹ cm^-2. The estimated photon index of 2.122±0.003 was consistent with previous results of Crab observation, while the observed 2-10 keV flux of 2.3×10^-8 erg s^-1 cm^-2 was slightly larger than the previous observation. We note that there was discrepancy between the simulated and the measured effective area on ground. Thus, we introduced a fudge factor to reproduce the effective area obtained in the ground calibration. The fudge factor of HXTs are included in the latest calibration database of Hitomi.

Original language	English
Title of host publication	Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII
Editors	Stephen L. O'Dell, Giovanni Pareschi
Publisher	SPIE
ISBN (Electronic)	9781510612556
DOIs	https://doi.org/10.1117/12.2272844
Publication status	Published - 2017
Externally published	Yes
Event	Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII 2017 - San Diego, United States Duration: 08-08-2017 → 10-08-2017

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10399
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII 2017
Country/Territory	United States
City	San Diego
Period	08-08-17 → 10-08-17

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2272844

Cite this

Awaki, H., Matsumoto, H., Ishida, M., Furuzawa, A., Yamauchi, S., Maeda, Y., Kunieda, H., Haba, Y., Hayashi, T., Iizuka, R., Ishibashi, K., Mitsuishi, I., Miyazawa, T., Mori, H., Okajima, T., Sugita, S., Tamura, K., Tawara, Y., & Yoshida, T. (2017). The Hitomi (ASTRO-H) hard X-ray telescope (HXT): Current status of calibration. In S. L. O'Dell, & G. Pareschi (Eds.), Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII Article 103990R (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10399). SPIE. https://doi.org/10.1117/12.2272844

@inproceedings{8b88519875c44801afe594b8bfd115b5,

title = "The Hitomi (ASTRO-H) hard X-ray telescope (HXT): Current status of calibration",

abstract = "The Japanese X-ray Astronomy Satellite, Hitomi (ASTRO-H) carried two hard X-ray telescopes (HXT), covering the energy band from 5 keV to 80 keV. In the initial functional verification phase of the onboard instruments, G21.5-0.9 and Crab nebula were observed with HXT. The data of G21.5-0.9 observation indicated that the hard X-ray imaging system worked well. Detail calibration of the Hitomi HXTs was performed with the observation data of Crab nebula. We extracted X-ray images of the Crab pulsar excluding the nebular emission, and confirmed that the imaging performance in orbit was satisfied with the requirement of the HXT. The 8-80 keV Crab spectrum was well fitted with a power-law model with the absorbed column of NH=3×1021 cm-2. The estimated photon index of 2.122±0.003 was consistent with previous results of Crab observation, while the observed 2-10 keV flux of 2.3×10-8 erg s-1 cm-2 was slightly larger than the previous observation. We note that there was discrepancy between the simulated and the measured effective area on ground. Thus, we introduced a fudge factor to reproduce the effective area obtained in the ground calibration. The fudge factor of HXTs are included in the latest calibration database of Hitomi.",

keywords = "ASTRO-H, HXT, Hard X-rays, depth-graded multilayer, hard X-ray telescope, multilayer",

author = "Hisamitsu Awaki and Hironori Matsumoto and Manabu Ishida and Akihiro Furuzawa and Shigeo Yamauchi and Yoshitomo Maeda and Hideyo Kunieda and Yoshito Haba and Takayuki Hayashi and Ryo Iizuka and Kazunori Ishibashi and Ikuyuki Mitsuishi and Takuya Miyazawa and Hideyuki Mori and Takashi Okajima and Satoshi Sugita and Keisuke Tamura and Yuzuru Tawara and Tessei Yoshida",

note = "Publisher Copyright: {\textcopyright} 2017 SPIE.; Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII 2017 ; Conference date: 08-08-2017 Through 10-08-2017",

year = "2017",

doi = "10.1117/12.2272844",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "O'Dell, {Stephen L.} and Giovanni Pareschi",

booktitle = "Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII",

address = "United States",

}

Awaki, H, Matsumoto, H, Ishida, M, Furuzawa, A, Yamauchi, S, Maeda, Y, Kunieda, H, Haba, Y, Hayashi, T, Iizuka, R, Ishibashi, K, Mitsuishi, I, Miyazawa, T, Mori, H, Okajima, T, Sugita, S, Tamura, K, Tawara, Y & Yoshida, T 2017, The Hitomi (ASTRO-H) hard X-ray telescope (HXT): Current status of calibration. in SL O'Dell & G Pareschi (eds), Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII., 103990R, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10399, SPIE, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII 2017, San Diego, United States, 08-08-17. https://doi.org/10.1117/12.2272844

The Hitomi (ASTRO-H) hard X-ray telescope (HXT): Current status of calibration. / Awaki, Hisamitsu; Matsumoto, Hironori; Ishida, Manabu et al.
Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII. ed. / Stephen L. O'Dell; Giovanni Pareschi. SPIE, 2017. 103990R (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10399).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - The Hitomi (ASTRO-H) hard X-ray telescope (HXT)

T2 - Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII 2017

AU - Awaki, Hisamitsu

AU - Matsumoto, Hironori

AU - Ishida, Manabu

AU - Furuzawa, Akihiro

AU - Yamauchi, Shigeo

AU - Maeda, Yoshitomo

AU - Kunieda, Hideyo

AU - Haba, Yoshito

AU - Hayashi, Takayuki

AU - Iizuka, Ryo

AU - Ishibashi, Kazunori

AU - Mitsuishi, Ikuyuki

AU - Miyazawa, Takuya

AU - Mori, Hideyuki

AU - Okajima, Takashi

AU - Sugita, Satoshi

AU - Tamura, Keisuke

AU - Tawara, Yuzuru

AU - Yoshida, Tessei

PY - 2017

Y1 - 2017

N2 - The Japanese X-ray Astronomy Satellite, Hitomi (ASTRO-H) carried two hard X-ray telescopes (HXT), covering the energy band from 5 keV to 80 keV. In the initial functional verification phase of the onboard instruments, G21.5-0.9 and Crab nebula were observed with HXT. The data of G21.5-0.9 observation indicated that the hard X-ray imaging system worked well. Detail calibration of the Hitomi HXTs was performed with the observation data of Crab nebula. We extracted X-ray images of the Crab pulsar excluding the nebular emission, and confirmed that the imaging performance in orbit was satisfied with the requirement of the HXT. The 8-80 keV Crab spectrum was well fitted with a power-law model with the absorbed column of NH=3×1021 cm-2. The estimated photon index of 2.122±0.003 was consistent with previous results of Crab observation, while the observed 2-10 keV flux of 2.3×10-8 erg s-1 cm-2 was slightly larger than the previous observation. We note that there was discrepancy between the simulated and the measured effective area on ground. Thus, we introduced a fudge factor to reproduce the effective area obtained in the ground calibration. The fudge factor of HXTs are included in the latest calibration database of Hitomi.

AB - The Japanese X-ray Astronomy Satellite, Hitomi (ASTRO-H) carried two hard X-ray telescopes (HXT), covering the energy band from 5 keV to 80 keV. In the initial functional verification phase of the onboard instruments, G21.5-0.9 and Crab nebula were observed with HXT. The data of G21.5-0.9 observation indicated that the hard X-ray imaging system worked well. Detail calibration of the Hitomi HXTs was performed with the observation data of Crab nebula. We extracted X-ray images of the Crab pulsar excluding the nebular emission, and confirmed that the imaging performance in orbit was satisfied with the requirement of the HXT. The 8-80 keV Crab spectrum was well fitted with a power-law model with the absorbed column of NH=3×1021 cm-2. The estimated photon index of 2.122±0.003 was consistent with previous results of Crab observation, while the observed 2-10 keV flux of 2.3×10-8 erg s-1 cm-2 was slightly larger than the previous observation. We note that there was discrepancy between the simulated and the measured effective area on ground. Thus, we introduced a fudge factor to reproduce the effective area obtained in the ground calibration. The fudge factor of HXTs are included in the latest calibration database of Hitomi.

KW - ASTRO-H

KW - HXT

KW - Hard X-rays

KW - depth-graded multilayer

KW - hard X-ray telescope

KW - multilayer

UR - http://www.scopus.com/inward/record.url?scp=85033494056&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85033494056&partnerID=8YFLogxK

U2 - 10.1117/12.2272844

DO - 10.1117/12.2272844

M3 - Conference contribution

AN - SCOPUS:85033494056

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII

A2 - O'Dell, Stephen L.

A2 - Pareschi, Giovanni

PB - SPIE

Y2 - 8 August 2017 through 10 August 2017

ER -

The Hitomi (ASTRO-H) hard X-ray telescope (HXT): Current status of calibration

Abstract

Publication series

Other

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this