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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kofman, Wlodek W.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2017 Interior of 67P/C-G comet as seen by CONSERT bistatic radar on Rosetta
- 2016Cosmochemical implications of CONSERT permittivity characterization of 67P/CG
- 2016An interpretation of the CONSERT and SESAME-PP results based on new permittivity measurements of porous water ice and ice-basaltic/organic dust mixtures suggests an increase of porosity with depth in 67P
- 2016Looking at Comet 67P Sub-surface in the Vicinity of Abydos
- 2016Characterizing the interior of 67P in the vicinity of Abydos
- 2016Cosmochemical implications of CONSERT permittivity characterization of 67P/C-G
- 2016Heterogeneities of 67P nucleus seen by CONSERT in the vicinity of Abydos
- 2016Mineralogical Implications of CONSERT Permittivity Characterization of 67P
- 2016Effect of meter-scale heterogeneities inside 67P nucleus on CONSERT data
- 2015Insights gained from Data Measured by the CONSERT Instrument during Philae's Descent onto 67P/C-G's surface
- 2015Broadband permittivity measurements on porous planetary regoliths simulants, in relation with the Rosetta mission to 67P/C-G
- 2015CONSERT Radar Investigations of the Shallow Subsurface of Comet 67P, in the Vicinity of the Philae Lander
- 2015Broadband Permittivity Measurements on Porous Planetary Soil Simulants, in Relation with the Rosetta Mission
- 2015The CONSERT Instrument during Philae's Descent onto 67P/C-G’s surface: Insights on Philae’s Attitude and the Surface Permittivity Measurements at the Agilkia-Landing-Site
- 2015Revealing the Possible Existence of a Near-Surface Gradient in Local Properties of 67P/Churyumov-Gerasimenko Nucleus Through CONSERT Measurements
- 2015The interior of 67P/C-G nucleus revealed by CONSERT measurements and simulations
- 2014Revealing the properties of Chuyurmov-Gerasimenko's shallow sub-surface through CONSERT's measurements at grazing angles
- 2009Comet nuclei primordial aggregation effects on their internal structure
- 2008Imaging of the Internal Structure of Comet 67P/Churyumov-Gerasimenko from Radiotomography CONSERT Data (Rosetta Mission) through spectral techniques
- 2008Comet nuclei aggregation and thermal simulations to prepare the Rosetta mission
- 2007Imaging of the Internal Structure of Comet 67P/Churyumov-Gerasimenko from Radiotomography CONSERT Data by Using Grid Computing Techniques (Rosetta Mission).
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document
Looking at Comet 67P Sub-surface in the Vicinity of Abydos
Abstract
While amazing surface features of comet 67P have been observed and revealed since the beginning of the Rosetta mission by a number of cameras onboard Rosetta’s main spacecraft (OSIRIS and NAVCAM) and Philae lander (CIVA and ROLIS), information below the surface has also been collected by the CONSERT (Comet Nucleus Sounding Experiment by Radiowave Transmission) experiment that can help constrain the nucleus formation and evolution. CONSERT is a bistatic radar with receivers and transmitters on-board both Rosetta’s main spacecraft and Philae lander. It has been successfully operating during the descent and First Science Sequence (FSS) right after Philae’s final landing at Abydos. The nucleus in the vicinity of Abydos has been actually sounded by CONSERT’s electromagnetic waves at 90 MHz with a spatial resolution around 10m (over lengths ranging from approximately 200 to 800 m and maximum depths of about one hundred of meters). The data collected provide information about the permittivity values inside the sounded volume and allows us to retrieve some constraints about the internal structures of the nucleus inside the sounded volume. In this paper, we specifically focus on local variations in the nucleus subsurface permittivity simulated over spatial scales ranging from tens to hundreds of meters. A number of propagation simulations corresponding to the CONSERT operations have been performed for a variety of subsurface permittivity models. The effect of local vertical and horizontal variations of the permittivity values around the landing site as well as comparison with CONSERT’s experimental data collected in the same configurations will be presented and discussed. Possible interpretations of the results will be presented as well as potential consequences for the nucleus structure in connection with observations instruments.