Connolly, C.,
Co-Authors: S. G. Kanekal, D. N. Baker, J. B. Blake, B. Klecker, G. M. Mason, and R. A. Mewaldt,
Title: The Aug-Sep 1998 Geomagnetic Storms: Relativistic Electron Responses in the Outer Zone as Seen by SAMPEX and POLAR,
Reference: Paper SM32A-14 EOS, 1999 Spring AGU Meeting supplement, S285, 1999.
Reference Type: Contributed Talk
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Abstract:
we report on the measurements of relativistic electron enhancement events in the outer zone during the months of august and september 1998. In particular we wish to characterize electron acceleration times, spectral and pitch angle changes during these geomagnetic storms. Charged particle detectors onboard POLAR and SAMPEX satellites are used to measure electrons ranging in energy from tens of keV to MeV. These events are compared and contrasted with earlier events that occured during january 1997 and may 1998. The august 1998 event especially, is seen to have a rather hard electron spectrum. It is well known that high energy electrons are implicated in spacecraft anomalies via the process of deep dielectric charging. The low earth orbit of SAMPEX and the high altitude (2-9 Re) POLAR orbit ensure very broad L-shell, pitch angle and spatial coverage of energetic electron measurements. Information about the interplanetary conditions is provided by sensors on WIND.
