Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa21a0283n&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SA21A-0283
Physics
2716 Energetic Particles: Precipitating, 2730 Magnetosphere: Inner, 2736 Magnetosphere/Ionosphere Interactions (2431), 2788 Magnetic Storms And Substorms (7954)
Scientific paper
Broadband electrons represent remarkable flux enhancements of precipitating electrons over a broad energy range of 30eV-30keV near the equatorward edge of the aurora oval during geomagnetic storms. These flux enhancements were initially reported using particle data of the DMSP satellites, which did not measure pitch angle distribution of precipitating electrons. Here, we investigate broadband electrons using data from the FAST satellite. Sixteen events of broadband electrons were identified from the electron energy spectra for large geomagnetic storms between September 1996 and March 2004. We analyzed in detail energy, pitch angle distribution, and wave spectra during the broadband electron event of July 15, 2000, observed at an altitude of ~2000 km. This event was observed at ~ 10 minutes after the onset of a substorm during the main phase of a storm. The broadband electrons were not observed in one orbit (~ 133 min.) before and after the event at the same local time. These results suggest rapid particle acceleration occurring in the inner magnetosphere associated with a storm-time substorm. During this event, electron flux parallel to the local magnetic field tends to be higher than the perpendicular flux at a low energy range below 1 keV, suggesting parallel acceleration of low energy electrons at low altitudes near the satellite. At a high energy range above 1 keV, electron fluxes show isotropic or double loss-cone features. In the presentation, we show further details of the distribution function of broadband electrons and field characteristics.
Carlson Carl W.
McFadden James P.
Nakajima Aki
Seki Kazuhiko
Shiokawa Kazuhiko
No associations
LandOfFree
Particle and field characteristics of broadband electrons observed by the FAST satellite during geomagnetic storms does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Particle and field characteristics of broadband electrons observed by the FAST satellite during geomagnetic storms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particle and field characteristics of broadband electrons observed by the FAST satellite during geomagnetic storms will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-752573