%0 Journal Article
%T Properties of the 67P/Churyumov-Gerasimenko interior revealed by CONSERT radar
%+ Institut de Planétologie et d'Astrophysique de Grenoble (IPAG )
%+ Institut méditerranéen d'océanologie (MIO)
%+ Géopôle du Pacifique Sud (GePaSUD)
%+ PLANETO - LATMOS
%+ Lunar and Planetary Institute [Houston] (LPI)
%+ Department of Electrical Engineering Information Technology [Bochum]
%+ Jet Propulsion Laboratory (JPL)
%+ HIPE (HIPE)
%+ Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS)
%+ University of Southern California (USC)
%+ USC Viterbi School of Engineering
%+ Laboratoire d'Astrophysique de Marseille (LAM)
%+ Institut de recherche en astrophysique et planétologie (IRAP)
%+ Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research (MPS)
%+ DLR Institute of Planetary Research
%+ Technische Universität Dresden = Dresden University of Technology (TU Dresden)
%+ European Space Research and Technology Centre (ESTEC)
%+ Queen Mary University of London (QMUL)
%A Kofman, Wlodek
%A Herique, Alain
%A Barbin, Yves
%A Barriot, Jean-Pierre
%A Ciarletti, Valérie
%A Clifford, Stephen
%A Edenhofer, Peter
%A Elachi, Charles
%A Eyraud, Christelle
%A Goutail, Jean-Pierre
%A Heggy, Essam
%A Jorda, Laurent
%A Lasue, Jérémie
%A Levasseur-Regourd, Anny Chantal
%A Nielsen, Erling
%A Pasquero, Pierre
%A Preusker, Frank
%A Puget, Pascal
%A Plettemeier, Dirk
%A Rogez, Yves
%A Sierks, Holger
%A Statz, Christoph
%A Svedhem, Hakan
%A Williams, Iwan
%A Zine, Sonia
%A van Zyl, Jakob
%< avec comité de lecture
%@ 0036-8075
%J Science
%I American Association for the Advancement of Science (AAAS)
%V 349
%N 6247
%P aab0639
%8 2015
%D 2015
%R 10.1126/science.aab0639
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]Journal articles
%X The Philae lander provides a unique opportunity to investigate the internal structure of a comet nucleus, providing information about its formation and evolution in the early solar system. We present Comet Nucleus Sounding Experiment by Radiowave Transmission (CONSERT) measurements of the interior of Comet 67P/Churyumov-Gerasimenko. From the propagation time and form of the signals, the upper part of the “head” of 67P is fairly homogeneous on a spatial scale of tens of meters. CONSERT also reduced the size of the uncertainty of Philae’s final landing site down to approximately 21 by 34 square meters. The average permittivity is about 1.27, suggesting that this region has a volumetric dust/ice ratio of 0.4 to 2.6 and a porosity of 75 to 85%. The dust component may be comparable to that of carbonaceous chondrites.
%G English
%2 https://insu.hal.science/insu-01182590/document
%2 https://insu.hal.science/insu-01182590/file/aab0639.full.pdf
%L insu-01182590
%U https://insu.hal.science/insu-01182590
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