Altitude extension of auroral potential structures by event-based and statistical studies

Details Altitude extension of auroral potential structures by event-based and statistical studies Altitude extension of auroral potential structures by event-based and statistical studies

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001adspr..28.1575j&link_type=abstract

Advances in Space Research, Volume 28, Issue 11, p. 1575-1580.

Computer Science

Scientific paper

Lots of observations below about 13000 km altitude favour the U-shaped potential model above auroral arcs. Recent observational findings above 20000 km indicate, however, that the U-shaped potential related to stable auroral arcs does not usually extend to that altitude. To resolve the dilemma, we have suggested an O-shaped potential model. Here we show how an O-shaped potential can form self-consistently by assuming plasma waves that energise ~50-400 eV electrons in the parallel direction. The obtained ``cooperative'' model invokes both waves and O-shaped potential structures in a nontrivial manner to produce inverted-V spectra and auroral arcs, and it is compatible with satellite observations at both low and high altitude.

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