Simulation of energetic particle injections associated with a substorm on August 27, 2001

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Abstract
Discrete injections of energetic electrons and ions and their subsequent drift echoes were observed shortly after 0410 UT on August 27, 2001 by three geosynchronous satellites which were arrayed on the dayside. The GOES‐8 spacecraft at geosynchronous orbit near local midnight, the four‐satellite CLUSTER constellation also near local midnight. Concurrent and POLAR was at two hours after midnight. The observations from this suite of satellites provide the basis of information and constraints for us to model the particle injections. The simulations with test‐particle simulations, reproduce both the observed electron and ion injections and subsequent drift echoes. Our simulation results support the idea that the energetic particle injections into the inner magnetosphere are a consequence of near‐Earth magnetic reconnection.

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