Radiation background and dose estimates for future X-ray observations in the Jovian magnetosphere

S. Kasahara, Y. Ezoe, T. Kimura, Y. Miyoshi

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The Jovian magnetosphere is the most luminous system at soft X-ray wave lengths in our solar system, and hence X-ray observations can provide significant information on the Jovian magnetospheric dynamics. During X-ray observations in the Jovian magnetosphere, however, penetrating particles can hit the detector, resulting in the background noise and radiation damage. Here we consider an X-ray telescope instrument (0.3-2 keV) on board a future Jovian magnetospheric spacecraft and estimate the count rates and dose rates by the high-energy particles for the design of the instrument. Based on Monte-Carlo simulations with Geant4 codes, we confirmed that good signal-to-noise ratio (0.5-500) and negligible dose rate (<0.1krad/year) can be accomplished during observations in the lobe (i.e.; the region where magnetic field lines are open), which would be achieved by the high-inclination orbit of the spacecraft.

本文言語English
ページ(範囲)129-135
ページ数7
ジャーナルPlanetary and Space Science
75
1
DOI
出版ステータスPublished - 2013 1
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 宇宙惑星科学

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