A5091744047- Astro and Planetary Science
- Planetary Science and Exploration
- Geology and Paleoclimatology Research
- Space Exploration and Technology
- Isotope Analysis in Ecology
- Spacecraft and Cryogenic Technologies
- Stellar, planetary, and galactic studies
- Geomagnetism and Paleomagnetism Studies
- Marine and environmental studies
- Astrophysics and Star Formation Studies
- Space Satellite Systems and Control
- Methane Hydrates and Related Phenomena
- Geological and Geochemical Analysis
- Space Science and Extraterrestrial Life
- Seismology and Earthquake Studies
- Historical Astronomy and Related Studies
- Scientific Computing and Data Management
- Geochemistry and Geologic Mapping
- Spacecraft Dynamics and Control
- Underwater Vehicles and Communication Systems
- Ionosphere and magnetosphere dynamics
- Geophysics and Sensor Technology
- Scientific Research and Discoveries
- Aeolian processes and effects
- Paleontology and Stratigraphy of Fossils
Laboratoire d’études spatiales et d’instrumentation en astrophysique
2013-2025
Space Hellas (Greece)
2024-2025
California Institute of Technology
2015-2023
Sorbonne Université
2011-2022
Université Paris Cité
2011-2022
Observatoire de Paris
2010-2022
Centre National de la Recherche Scientifique
2012-2022
Université de Versailles Saint-Quentin-en-Yvelines
2011-2022
Czech University of Life Sciences Prague
2020-2022
Délégation Paris 7
2012-2022
The entry of the Cassini-Huygens spacecraft into orbit around Saturn in July 2004 marked start a golden era exploration Titan, Saturn's giant moon. During Prime Mission (2004–2008), ground-breaking discoveries were made by Cassini orbiter including equatorial dune fields (flyby T3, 2005), northern lakes and seas (T16, 2006), large positive negative ions (T16 & T18, to name few. In 2005 Huygens probe descended through Titan's atmosphere, taking first close-up pictures surface, networks...
Titan, Saturn's largest satellite, is subject to solid body tides exerted by Saturn on the timescale of its orbital period. The tide-induced internal redistribution mass results in tidal stress variations, which could play a major role for Titan's geologic surface record. We construct models interior that are consistent with satellite's mean density, polar moment-of-inertia factor, obliquity, and potential Love number k2 as derived from Cassini observations low-degree gravity field...
Abstract Thanks to the Cassini–Huygens mission, Titan, pale orange dot of Pioneer and Voyager encounters, has been revealed be a dynamic, hydrologically shaped, organic-rich ocean world offering unparalleled opportunities explore prebiotic chemistry. And while revolutionized our understanding each three “layers” Titan—the atmosphere, surface, interior—we are only beginning hypothesize how these realms interact. In this paper, we summarize current state Titan knowledge discuss future...
Abstract We investigate Titan's low‐latitude and midlatitude surface using spectro‐imaging near‐infrared data from Cassini/Visual Infrared Mapping Spectrometer. use a radiative transfer code to first evaluate atmospheric contributions then extract the haze albedo values of major geomorphological units identified in Cassini Synthetic Aperture Radar data, which exhibit quite similar spectral response Visual Spectrometer data. have three main categories shapes, indicating significant...
Abstract In 13 years, infrared observations from the Visual and Infrared Mapping Spectrometer onboard Cassini provided significant hints about spectral geological diversity of Titan's surface. The analysis (IR) signature units enables constraining surface composition, which is crucial for understanding possible interactions between interior, surface, atmosphere. Here we investigate a selection areas in equatorial regions, imaged by Cassini's instruments, exhibit an apparent transition...
Titan is unique in the solar system: it an ocean world, icy organic and has a dense atmosphere. It geologically active world as well, with ongoing exogenic processes, such rainfall, sediment transportation deposition, erosion, possible endogenic tectonism cryovolcanism. This combination of makes prime target for astrobiological research, biosignatures may be present its surface, impact melt deposits cryovolcanic flows, well deep ice water underneath outer shell. Impact craters are important...
In response to ESA Voyage 2050 announcement of opportunity, we propose an ambitious L-class mission explore one the most exciting bodies in Solar System, Saturn largest moon Titan. Titan, a "world with two oceans", is organic-rich body interior-surface-atmosphere interactions that are comparable complexity Earth. Titan also few places System habitability potential. remarkable nature was only partly revealed by Cassini-Huygens and still holds mysteries requiring complete exploration using...
We investigate the nature and possible formation processes of three areas on Titan's surface which have been suggested as geologically interesting: Hotei Regio, Tui Sotra Patera. also reanalyze spectral characteristics Huygens Landing Site. apply a statistical Principal Component Analysis (PCA) radiative transfer (RT) method Visual Infrared Mapping Spectrometer Datacubes in order to retrieve albedo distinct units near infrared. able exploit only subset currently available Regio data, are,...