Anomalous foreshock field-aligned beams observed by Cluster

We report occasional observations of two simultaneously distinct ion foreshock components recorded by the Cluster spacecraft upstream of the Earth's bow shock. In most occurrences, the lower-energy population originates as a field-aligned beam (FAB) associated with quasi-perpendicular regio...

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Bibliographic Details
Main Authors: K. Meziane, A. M. Hamza, M. Wilber, C. Mazelle, M. A. Lee
Format: Article
Language:English
Published: Copernicus Publications 2011-10-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/29/1967/2011/angeo-29-1967-2011.pdf