Physics
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3206104y&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 6, CiteID L06104
Physics
3
Ionosphere: Particle Precipitation, Magnetospheric Physics: Energetic Particles: Precipitating, Magnetospheric Physics: Auroral Phenomena (2407), Magnetospheric Physics: Magnetosphere/Ionosphere Interactions (2431), Magnetospheric Physics: Plasma Sheet
Scientific paper
We investigated the characteristics of auroral precipitating particles associated with a brightened arc at a pseudo-substorm, using auroral images of a high-time resolution (0.25 s) all-sky TV camera, particle data from the DMSP F10 spacecraft, and high-latitude magnetograms. The arc brightening occurred at 0407 UT (~20 MLT) on December 30, 1994, at Fort Smith (67 MLAT), Canada, coincident with high-latitude Pi 2 magnetic pulsations. The brightening appeared without expansion (pseudo-breakup), and Fort Smith was located duskside of the main onset region. From the simultaneous DMSP particle data, the brightened arc is found to correspond to an electron inverted-V structure near the equatorward edge of the electron precipitation region, suggesting the pseudo-breakup of the auroral substorm occurred in the inner part of the plasma sheet.
Hayashi Kumiko
Shiokawa Kazuhiko
Yago K.
Yumoto Kiyo
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