HR: 1400h
AN: SM53B-01    [Abstracts]
TI: Two Distinct Types of Cusp-Like Regions Observed by POLAR
AU: * Niehof, J T
EM: jniehof@bu.edu
AF: Boston University Center for Space Physics, 725 Commonwealth Avenue, Boston, MA 02215, United States
AU: Fritz, T
EM: fritz@bu.edu
AF: Boston University Center for Space Physics, 725 Commonwealth Avenue, Boston, MA 02215, United States
AU: Friedel, R H
EM: friedel@lanl.gov
AF: Los Alamos National Laboratory, Space and Atmospheric Sciences (ISR-1) MS-D466, Los Alamos, NM 87545, United States
AU: Chen, J
EM: jschen@bu.edu
AF: Boston University Center for Space Physics, 725 Commonwealth Avenue, Boston, MA 02215, United States
AB: We examine POLAR data for several cusp crossings, observing two different types of cusp-like regions. We apply the label "quiet cusp" to the traditional cusp of high-density, stagnant solar wind plasma. "Cusp Diamagnetic Cavities", described previously, are similar but show a strongly depressed and turbulent field and are colocated with "Cusp Energetic Particle" observations. Within the CDC's, field depressions are strongly correlated to enhancements in the local plasma density.
DE: 2706 Cusp
DE: 2720 Energetic particles: trapped
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Joint Assembly