Effects on magnetic reconnection of a density asymmetry across the current sheet

André, M.; Khotyaintsev, Y.; Vaivads, A.; Owen, C. J.; Fujimoto, M.; Asano, Y.; Retinò, A.; Bavassano-Cattaneo, M. B.; Shinohara, I.; Buchert, S. C.; Tanaka, K. G.