Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm41a1682g&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SM41A-1682
Physics
[2704] Magnetospheric Physics / Auroral Phenomena, [2716] Magnetospheric Physics / Energetic Particles: Precipitating, [2740] Magnetospheric Physics / Magnetospheric Configuration And Dynamics, [2790] Magnetospheric Physics / Substorms
Scientific paper
Recent THEMIS studies have demonstrated that auroral activity poleward of the visible auroral onset at the equatorward edge of the auroral oval occurs at frequencies other than those studied in the white-light band, such as 630.0 nm. These auroral forms may be ionospheric footpoints of earthward-traveling flow bursts due to near-earth reconnection. To better constrain the generation mechanism and interpretation models of these phenomena, we use an event-specific magnetic model to compute the precipitating energy flux of electrons scattered into the loss cone due to two processes: the energy-dependent non-adiabaticity of the particles and waves scattering all of the trapped electrons into the loss cone. Using THEMIS in-situ measurements, we determine if and where enough flux exists in order to be detected by ground instrumentation and compare our results with ground observations on the event.
Angelopoulos Vassilis
Donovan Eric
Frey Harald U.
Gabrielse C. E.
Glassmeier K.-
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