Design study of X-ray telescope onboard NeXT

Akihiro Furuzawa, Takashi Okajima, Yasushi Ogasaka, Keisuke Tamura, Yuzuru Tawara, Koujun Yamashita

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)


Our previous balloon borne experiment, named InFOCμS, proved the imaging capability of the hard X-ray telescope in the energy band above 20 keV. The hard X-ray telescope onboard InFOCμS is the multi-nested thin foil optics using the platinum-carbon depth graded multilayers. Based on the experience of InFOCμS project, we are planing to develop the extremely broad-band X-ray telescope covering the energy range from 0.1 to 80 keV for the future Japanese X-ray astronomical satellite, NeXT (New X-ray Telescope), proposed to launch in 2010. We present here the scientific objectives for X-ray observations in that energy band and the investigation of the requirements for the NeXT X-ray telescope. In order to search the non-thermal emission from the rich clusters of galaxies with cluster-scale radio halo, the required effective area is at least 1000 cm2 at 40 keV and the field of view should be larger than 10 arcmin × 10 arcmin. From the effective area estimated from the current design of multilayer parameters, it can be achieved with 4 telescopes with focal length of 12 m and diameter of 60 cm.

Original languageEnglish
Pages (from-to)708-715
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue number1
Publication statusPublished - 01-12-2002
Externally publishedYes
EventX-ray and Gamma-Ray telescopes and Instruments for Astronomy - Waikoloa, HI, United States
Duration: 24-08-200228-08-2002

All Science Journal Classification (ASJC) codes

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


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