Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm53d..06s&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SM53D-06
Physics
[2704] Magnetospheric Physics / Auroral Phenomena, [2716] Magnetospheric Physics / Energetic Particles: Precipitating, [2740] Magnetospheric Physics / Magnetospheric Configuration And Dynamics, [2764] Magnetospheric Physics / Plasma Sheet
Scientific paper
The aurora is often interpreted as a projection of large scale dynamics occurring in the central plasma sheet. This is only one mechanism for driving changes in auroral structure and luminosity and we do not know when (and to what extent) magnetotail processes determine auroral morphology. What specific auroral features are directly driven by and/or related to individual magnetospheric processes? Using data from the THEMIS white light and NORSTAR multi-spectral imagers we investigate the relationship between plasma sheet flow and the motion of auroral features. We use data from a twenty day period, starting in late March 2009, when the NORSTAR imagers operated in a high resolution mode capturing the red-line aurora at a six second cadence (synchronized with the THEMIS ASI array). Concurrent THEMIS spacecraft observations are used as a measure of local plasma sheet flow. We present results from the survey of optical and spacecraft data and discuss the possible connection between auroral and magnetospheric motion.
Donovan Eric F.
Kepko Larry E.
Liang Jian-Jie
Liu Wende
Lui Alberto
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