Model of dust jets for 08 Sep. 2008 and 22 Oct. 2008. The left panels show Laplace-filtered images of 67P. the right panels show the same images with simulations overlaid. The agreement between model and detection suggests that some of detected structures are real and not artifacts created by the image enhancement technique. Other patterns present in the filtered images, in the sunward direction for all images and antisolar for Sep. 2008, cannot be reproduced by the model. We interpret them as the front edge of the dust coma, or the signature of the dust tail. The dotted line traces the orbital plane of the comet.