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Radial propagation velocity of energetic particle injections according to measurements onboard the Cluster satellites

Nakamura, R.; Sergeev, V. A.; Baumjohann, W. +4 more

Injections of energetic electrons with a dispersion over energies were observed during the February 23, 2004 (at about 03:20 UT) substorm onboard the Cluster satellites in the vicinity of perigee near the midnight meridian. The delays in the particle observation caused by the energy dependence of the magnetic drift velocities made it possible to d…