Formation of Saturn's ring spokes by lightning-induced electron beams - Jones, GH; Krupp, N; Krueger, H; Roussos, E; Ip, W-H; Mitchell, DG; Krimigis, SM; Woch, J; Lagg, A; Fraenz, M; Dougherty, MK; Arridge, CS; et al. (GEOPHYSICAL RESEARCH LETTERS, 2006)