Imaging the Global Distribution of Plasmaspheric Oxygen

DOI Web Site Web Site 被引用文献2件
  • J. Goldstein
    Space Science and Engineering Division Southwest Research Institute San Antonio TX USA
  • C. R. Chappell
    Vanderbilt Dyer Observatory, Department of Physics and Astronomy Vanderbilt University Nashville TN USA
  • M. W. Davis
    Space Science and Engineering Division Southwest Research Institute San Antonio TX USA
  • M. H. Denton
    Space Science Institute Boulder CO USA
  • R. E. Denton
    Department of Physics and Astronomy Dartmouth College Hanover NH USA
  • D. L. Gallagher
    NASA Marshall Space Flight Center Huntsville AL USA
  • G. R. Gladstone
    Space Science and Engineering Division Southwest Research Institute San Antonio TX USA
  • M. B. Lecocke
    Space Science and Engineering Division Southwest Research Institute San Antonio TX USA
  • B. R. Sandel
    Lunar and Planetary Laboratory University of Arizona Tucson AZ USA
  • D. L. Windt
    Reflective X‐ray Optics LLC New York NY USA

書誌事項

公開日
2018-03
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/2017ja024531
公開者
American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>This paper investigates the potential for 83.4 nm imaging of the plasmaspheric dense oxygen torus, using simple models for core plasma density and composition to constrain a simulated image code. We derive the requirements for plasmaspheric O<jats:sup>+</jats:sup> imaging, and the expected performance of an imager based on a slightly modified version of the IMAGE extreme ultraviolet camera. We find that such an imager can achieve a sensitivity of 0.69(s R pixel)<jats:sup>−1</jats:sup>, sufficient to capture the dense torus 83.4 nm signal with 25 min integration time. The background rejection ratios for this design are 1.5 × 10<jats:sup>−4</jats:sup> at 58.4 nm and 7.4 × 10<jats:sup>−8</jats:sup> for Lyman‐<jats:italic>α</jats:italic>. We discuss the effects of ion temperature and motion, and O<jats:sup>++</jats:sup> glow. We compute simulated O<jats:sup>+</jats:sup> images of the formation and global distribution of the dense torus. We also examine the possibility of direct observation of oxygen outflow from the ionosphere.</jats:p>

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