Dust density around 67P originating from a homogeneous surface emission. (a) Equirectangular projection of the dust density at 3 km from the center of the nucleus. Darker spots indicate higher dust densities within primary jets. The dashed line marks a secondary dust belt encircling the neck area. (b) Map of the primary jets traced back to the surface. Blue and red surface areas contribute to primary jets. The yellow track indicates the line of sight from Rosetta on 2015 April 12, 12:12 along the highest observed intensity. Surface areas connected to the 13 primary jets intersecting the line of sight are marked in red.