Formation of the low-latitude boundary layer and cusp under the northward IMF:: Simultaneous observations by Cluster and Double Star - Bogdanova, YV; Owen, CJ; Dunlop, MW; Wild, JA; Davies, JA; Lahiff, AD; Taylor, MGGT; Fazakerley, AN; Dandouras, I; Carr, CM; Lucek, EA; Reme, H (JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2008)