Polar cap arcs Cusp Reconnection Kelvin Helmholtz Instability Velocity shear Field aligned current
Y. Zhang, Paxton, L. J., Zhang, Q., and Xing, Z.,
“Polar cap arcs: Sun-aligned or cusp-aligned?”,
Journal of Atmospheric and Solar-Terrestrial Physics, vol. 146, pp. 123 - 128, 2016.