Hans-Herbert Fischer

TL;DR: The precise circumstances of the multiple landings of Philae, including the bouncing trajectory and rebound parameters, are reported, based on engineering data in conjunction with operational instrument data, which provide information on the mechanical properties of the comet surface.

TL;DR: A review of the main physical properties of cometary nuclei can be found in this article, focusing on the thermal, mechanical, structural, and dielectric properties, emphasising the progress made during the Rosetta mission.

TL;DR: A review of the main physical properties of cometary nuclei can be found in this paper, focusing on the thermal, mechanical, structural and dielectric properties of the cometary nucleus.

TL;DR: In this article, the porosity of the first meter below the surface at Abydos was found to be 2.45 ± 0.20, which is consistent with a porosity <50% if the dust phase is analogous to carbonaceous chondrites and <75% in the case of less primitive ordinary chondites.

TL;DR: The Dust Impact Monitor (DIM) was used by the Rosetta lander Philae to detect impacts by submillimeter-and millimeter-sized ice and dust particles that are emitted from the nucleus and transported into the cometary coma as discussed by the authors.