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Slow Magnetosonic Solitons Detected by the Cluster Spacecraft

Lavraud, B.; Buchert, S.; Gustafsson, G. +4 more

Experimental evidence is provided for the existence of slow-mode magnetosonic solitons in the col­lisionless plasma at the magnetopause boundary layer. The solitons were detected by the fleet of Cluster spacecraft at the dusk flank of the magnetosphere as magnetic field depressions (up to 85%) accom­panied with enhancement of the plasma density an…

Density-Transition Scale at Quasiperpendicular Collisionless Shocks

Bale, S. D.; Horbury, T. S.; Mozer, F. S.

Measurements of a spacecraft floating potential, on the four Cluster spacecraft, are used as a proxy for electron plasma density to study, for the first time, the macroscopic density transition scale at 98crossings of the quasiperpendicular terrestrial bow shock. A timing analysis gives shock speeds and normals; the shock speed is used to convert …