Other
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995angeo..13..505d&link_type=abstract
Annales Geophysicae (ISSN 0992-7689), vol. 13, no. 5, pp. 505-516
Other
21
Charge Exchange, Earth Magnetosphere, High Temperature Plasmas, Magnetic Storms, Neutral Atoms, Flux (Rate), Imaging Techniques, Ions, Spacecraft Instruments, Spacecraft Orbits
Scientific paper
The in situ observations of the Earth magnetosphere performed over the past decades of space research have provided a rather good understanding of many partial localized processes of the magnetospheric substorm. This paper presents briefly a promising technique of global observations, namely the imaging of charge exchange neutral atoms, or neutral atom imaging (NAI) of the magnetosphere. Model and theoretical estimates of charge-exchange neutral atom fluxes, as well as appropriate spacecraft orbit and instrumentation requirements are presented and discussed for specific regions of interest and vantage points. The potential merits of NAI for substorm research are presented along with posssible combinations with other types of observational methods. Substorm issues that would benefit from NAI should include among others the assessment of the ionospheric contribution to the hot magnetoshpheric plasma, the relative importance of various ionospheric ion source regions, the resolution of spatial and temporal characteristics of substorrm ion injections, NAI observations can be precious complements to local observations and lead to the understanding of how local processes, many of which are resolved quite well today, combine to form the global process of the magnetosphereic substorm.
Daglis Ioannis A.
Livi Stefano S.
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