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Proceedings Paper

Broadband x-ray imaging mission NeXT
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Paper Abstract

One of the major fields to be explored in the 21st century is the hard X-ray sky up to 50 keV or 100 keV. Above 10 keV, thermal components start to decay rapidly and then non-thermal power law continua become dominant. For example, some of SNR and Cluster of Galaxies exhibit substantial non-thermal components, which suggest high energy electrons. We would like to investigate acceleration mechanisms of such high energy particles by observing hard X-ray images and their spectra. In order to perform imaging observations in hard X-ray range up to 50 keV, supermirror hard X-ray telescopes are most promising. We have studied to put Pt/C supermirror on the mirror shells of a high throughput X-ray telescope. The first satellite mission proposed with the supermirror hard X-ray telescope is our New X-ray Telescope mission (NeXT) in Japan to be launched 2010. 6-7 supermirror telescopes will be installed at the top of an extensible optical bench. The hybrid X-ray imager will be placed on the focal plane to observe hard X-ray images up to 50 keV with CdTe pixel detector underneath a thin CCD for soft X-ray imaging. For high resolution spectroscopy, TES type calorimeters are considered without cryogen. Non-imaging hard X-ray and soft gamma ray detector is studied to achieve unprecedented sensitivity between 50 and 300 keV. NeXT will be a sort of pathfinder of hard X-ray astronomy not only technically but also scientifically.

Paper Details

Date Published: 11 March 2003
PDF: 7 pages
Proc. SPIE 4851, X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy, (11 March 2003); doi: 10.1117/12.461508
Show Author Affiliations
Yuzuru Tawara, Nagoya Univ. (Japan)
Hideyo Kunieda, Institute of Space and Astronautical Science (Japan)
Hajime Inoue, Institute of Space and Astronautical Science (Japan)
Kazuhisa Mitsuda, Institute of Space and Astronautical Science (Japan)
Yasushi Ogasaka, Nagoya Univ. (Japan)
Tadayuki Takahashi, Institute of Space and Astronautical Science (Japan)

Published in SPIE Proceedings Vol. 4851:
X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy
Joachim E. Truemper; Harvey D. Tananbaum, Editor(s)

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