Simultaneous observations of the proton ring current and stable auroral red arcs

Details Simultaneous observations of the proton ring current and stable auroral red arcs Simultaneous observations of the proton ring current and stable auroral red arcs

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81..608w&link_type=abstract

Journal of Geophysical Research, vol. 81, Feb. 1, 1976, p. 608-616.

Astronomy and Astrophysics

Astronomy

6

Auroral Arcs, Plasmapause, Proton Energy, Red Arcs, Ring Currents, Astronomical Photometry, Birefringence, Energy Dissipation, Explorer Satellites, Ion Cyclotron Radiation, Ionospheric Currents, Magnetic Storms, Satellite Observation

Scientific paper

Explorer 45 observed the equatorial proton ring current in the plasmapause region and Fritz Peak Observatory observed stable auroral red (SAR) arcs on Dec. 17, 1971 during a geomagnetic storm. An estimate of energy lost from the ring current was obtained by using Explorer 45 observations of pitch angle distribution transitions which are probably due to pitch angle diffusion-driven resonant interactions with ion cyclotron waves. Estimates of the equatorial loss rate yield values greater than the required SAR arc energy input rate, and the location of the peaks in these loss rates agrees with the observed location of the arcs. It is thus concluded that this energy loss is sufficient to sustain the SAR arcs.

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