HR: 0800h
AN: SM31B-0411    [Abstracts]
TI: A Survey of Reconnection Signatures in Auroral Oval Ion Precipitation
AU: * Sotirelis, T
EM: tom.sotirelis@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd., Laurel, MD 20723 United States
AU: Newell, P T
EM: patrick.newell@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd., Laurel, MD 20723 United States
AU: Meng, C
EM: ching.meng@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd., Laurel, MD 20723 United States
AB: The distribution function of precipitating ions on recently reconnected field lines in the auroral oval can exhibit a cutoff toward low energy due to time-of-flight effects. The cutoff energy in such signatures is usually disbursed in latitude and can be suppressed by an accelerating potential. The frequency of occurrence on the nightside is not strongly impacted by proximity to substorms. An automated procedure detects such signatures in DMSP SSJ/4 observations. A survey indicating their occurrence rate throughout the portion of the oval covered by DMSP is presented.
DE: 2716 Energetic particles: precipitating
DE: 2723 Magnetic reconnection (7526, 7835)
DE: 2736 Magnetosphere/ionosphere interactions (2431)
DE: 2748 Magnetotail boundary layers
DE: 2764 Plasma sheet
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005