Hard X-ray focusing optics up to 80 keV for the future missions

T. Okajima, Y. Tawara, Y. Ogasaka, K. Tamura, Akihiro Furuzawa, K. Yamashita, H. Kunieda

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

X-ray telescopes have been providing high sensitivity X-ray observations in numerous missions. For X-ray telescopes in the future, one of the key technologies is to expand the energy band beyond 10 keV. We designed depth-graded multilayer, so-called supermirrors, for a hard X-ray telescope in the energy band up to 40 keV using lightweight thin-foil optics. They were successfully flown in a balloon flight and obtained a hard X-ray image of Cyg X-1 in the 20-40 keV band. Now supermirrors are promising to realize a hard X-ray telescope. We have estimated the performance of a hard X-ray telescope using a platinum-carbon supermirror for future satellite missions, such as NeXT (Japan) and XEUS (Europe). According to calculations, they will have a significant effective area up to 80 keV, and their effective areas will be more than 280 cm 2 even at 60 keV. Limiting sensitivity will be down to 1.7 × 10 -13 erg cm -2 s -1 in the 10-80 keV band at a 100 ks observation. In this paper, we present the results of the balloon experiment with the first supermirror flown and projected effective areas of hard X-ray telescopes and action items for future missions.

Original languageEnglish
Pages (from-to)2682-2687
Number of pages6
JournalAdvances in Space Research
Volume34
Issue number12 SPEC.ISS.
DOIs
Publication statusPublished - 01-01-2004

Fingerprint

Optics
Telescopes
optics
X rays
telescopes
x rays
Balloons
Band structure
energy bands
balloon flight
satellite mission
sensitivity
balloons
platinum
erg
Metal foil
energy
Platinum
foils
Japan

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)

Cite this

Okajima, T., Tawara, Y., Ogasaka, Y., Tamura, K., Furuzawa, A., Yamashita, K., & Kunieda, H. (2004). Hard X-ray focusing optics up to 80 keV for the future missions. Advances in Space Research, 34(12 SPEC.ISS.), 2682-2687. https://doi.org/10.1016/j.asr.2003.03.057
Okajima, T. ; Tawara, Y. ; Ogasaka, Y. ; Tamura, K. ; Furuzawa, Akihiro ; Yamashita, K. ; Kunieda, H. / Hard X-ray focusing optics up to 80 keV for the future missions. In: Advances in Space Research. 2004 ; Vol. 34, No. 12 SPEC.ISS. pp. 2682-2687.
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Okajima, T, Tawara, Y, Ogasaka, Y, Tamura, K, Furuzawa, A, Yamashita, K & Kunieda, H 2004, 'Hard X-ray focusing optics up to 80 keV for the future missions', Advances in Space Research, vol. 34, no. 12 SPEC.ISS., pp. 2682-2687. https://doi.org/10.1016/j.asr.2003.03.057

Hard X-ray focusing optics up to 80 keV for the future missions. / Okajima, T.; Tawara, Y.; Ogasaka, Y.; Tamura, K.; Furuzawa, Akihiro; Yamashita, K.; Kunieda, H.

In: Advances in Space Research, Vol. 34, No. 12 SPEC.ISS., 01.01.2004, p. 2682-2687.

Research output: Contribution to journalArticle

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AU - Yamashita, K.

AU - Kunieda, H.

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Okajima T, Tawara Y, Ogasaka Y, Tamura K, Furuzawa A, Yamashita K et al. Hard X-ray focusing optics up to 80 keV for the future missions. Advances in Space Research. 2004 Jan 1;34(12 SPEC.ISS.):2682-2687. https://doi.org/10.1016/j.asr.2003.03.057