Publications
164 results found
Vigren E, Galand M, Yelle RV, et al., 2014, Ionization balance in Titan's nightside ionosphere, Icarus, Vol: 248, Pages: 539-546, ISSN: 0019-1035
Moore L, O'Donoghue J, Mueller-Wodarg I, et al., 2014, Saturn ring rain: Model estimates of water influx into Saturn's atmosphere, Icarus, Vol: 245, Pages: 355-366, ISSN: 0019-1035
Vigren E, Galand M, Shebanits O, et al., 2014, INCREASING POSITIVE ION NUMBER DENSITIES BELOW THE PEAK OF ION-ELECTRON PAIR PRODUCTION IN TITAN'S IONOSPHERE, ASTROPHYSICAL JOURNAL, Vol: 786, ISSN: 0004-637X
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- Citations: 10
Galand MIF, Coates A, Cravens T, et al., 2014, Titan's Ionosphere, Titan: Interior, Surface, Atmosphere, and Space Environment, Editors: Mueller-Wodarg, Griffith, Lellouch, Cravens, Publisher: Cambridge University Press, Pages: 376-418, ISBN: 9780521199926
Badman SV, Branduardi-Raymont G, Galand M, et al., 2014, Auroral Processes at the Giant Planets: Energy Deposition, Emission Mechanisms, Morphology and Spectra, Space Science Reviews, Vol: 187, Pages: 99-179, ISSN: 1572-9672
The ionospheric response to auroral precipitation at the giant planets is reviewed,using models and observations. The emission processes for aurorae at radio, infrared, visible,ultraviolet, and X-ray wavelengths are described, and exemplified using ground- andspace-based observations. Comparisons between the emissions at different wavelengths are made, where possible, and interpreted in terms of precipitating particle characteristics oratmospheric conditions. Finally, the spatial distributions and dynamics of the various componentsof the aurorae (moon footprints, low-latitude, main oval, polar) are related to magnetosphericprocesses and boundaries, using theory, in situ, and remote observations, withthe aim of distinguishing between those related to internally-driven dynamics, and thoserelated to the solar wind interaction.
Matta M, Galand M, Moore L, et al., 2014, Numerical simulations of ion and electron temperatures in the ionosphere of Mars: Multiple ions and diurnal variations, ICARUS, Vol: 227, Pages: 78-88, ISSN: 0019-1035
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- Citations: 59
Snowden D, Yelle RV, Galand M, et al., 2013, Auroral electron precipitation and flux tube erosion in Titan's upper atmosphere, ICARUS, Vol: 226, Pages: 186-204, ISSN: 0019-1035
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- Citations: 19
Vigren E, Galand M, 2013, PREDICTIONS OF ION PRODUCTION RATES AND ION NUMBER DENSITIES WITHIN THE DIAMAGNETIC CAVITY OF COMET 67P/CHURYUMOV-GERASIMENKO AT PERIHELION, ASTROPHYSICAL JOURNAL, Vol: 772, ISSN: 0004-637X
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- Citations: 43
Ray LC, Galand M, Delamere PA, et al., 2013, Current-voltage relation for the Saturnian system, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 118, Pages: 3214-3222, ISSN: 2169-9380
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- Citations: 15
Vigren E, Galand M, Yelle RV, et al., 2013, On the thermal electron balance in Titan's sunlit upper atmosphere, ICARUS, Vol: 223, Pages: 234-251, ISSN: 0019-1035
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- Citations: 34
Lavvas P, Yelle RV, Koskinen T, et al., 2013, Aerosol growth in Titan's ionosphere, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 110, Pages: 2729-2734, ISSN: 0027-8424
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- Citations: 114
Cui J, Yelle RV, Strobel DF, et al., 2012, The CH<sub>4</sub> structure in Titan's upper atmosphere revisited, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 117, ISSN: 2169-9097
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- Citations: 44
Moore L, Fischer G, Mueller-Wodarg I, et al., 2012, Diurnal variation of electron density in Saturn's ionosphere: Model comparisons with Saturn Electrostatic Discharge (SED) observations, ICARUS, Vol: 221, Pages: 508-516, ISSN: 0019-1035
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- Citations: 11
Tinetti G, Beaulieu JP, Henning T, et al., 2012, EChO, EXPERIMENTAL ASTRONOMY, Vol: 34, Pages: 311-353, ISSN: 0922-6435
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- Citations: 102
Ray LC, Galand M, Moore LE, et al., 2012, Characterizing the limitations to the coupling between Saturn's ionosphere and middle magnetosphere, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 117, ISSN: 2169-9380
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- Citations: 16
Morse AD, Altwegg K, Andrews DJ, et al., 2012, The Rosetta campaign to detect an exosphere at Lutetia, PLANETARY AND SPACE SCIENCE, Vol: 66, Pages: 165-172, ISSN: 0032-0633
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- Citations: 9
Arridge CS, Agnor CB, Andre N, et al., 2012, Uranus Pathfinder: exploring the origins and evolution of Ice Giant planets, EXPERIMENTAL ASTRONOMY, Vol: 33, Pages: 753-791, ISSN: 0922-6435
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- Citations: 42
Chakrabarti S, Jokiaho O-P, Baumgardner J, et al., 2012, High-throughput and multislit imaging spectrograph for extended sources, OPTICAL ENGINEERING, Vol: 51, ISSN: 0091-3286
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- Citations: 9
Mueller-Wodarg ICFM, Moore L, Galand M, et al., 2012, Magnetosphere-atmosphere coupling at Saturn: 1: Response of thermosphere and ionosphere to steady state polar forcing, Icarus, Vol: 221, Pages: 481 - 494-481 - 494, ISSN: 0019-1035
Cui J, Yelle RV, Mueller-Wodarg ICF, et al., 2011, The implications of the H<sub>2</sub> variability in Titan's exosphere, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 116, ISSN: 2169-9380
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- Citations: 26
Lanchester B, Jokiaho O-P, Galand M, et al., 2011, Separating and quantifying ionospheric responses to proton and electron precipitation over Svalbard, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 116, ISSN: 2169-9380
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- Citations: 3
Galand M, Moore L, Mueller-Wodarg I, et al., 2011, Response of Saturn's auroral ionosphere to electron precipitation: Electron density, electron temperature, and electrical conductivity, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 116, ISSN: 2169-9380
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- Citations: 50
Melin H, Stallard T, Miller S, et al., 2011, Simultaneous Cassini VIMS and UVIS observations of Saturn's southern aurora: Comparing emissions from H, H<sub>2</sub> and H<sub>3</sub><SUP>+</SUP> at a high spatial resolution, GEOPHYSICAL RESEARCH LETTERS, Vol: 38, ISSN: 0094-8276
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- Citations: 43
Ghail RC, Wilson C, Galand M, et al., 2011, EnVision: taking the pulse of our twin planet, Experimental Astronomy: an international journal on astronomical instrumentation and data analysis
EnVision is an ambitious but low-risk response to ESA’s call for a medium-size mission opportunity for a launch in 2022. Venus is the planet most similar to Earth in mass, bulk properties and orbital distance, but has evolved to become extremely hostile to life. EnVision’s 5-year mission objectives are to determine the nature of and rate of change caused by geological and atmospheric processes, to distinguish between competing theories about its evolution and to help predict the habitability of extrasolar planets. Three instrument suites will address specific surface, atmosphere and ionosphere science goals. The Surface Science Suite consists of a 2.2 m2 radar antenna with Interferometer, Radiometer and Altimeter operating modes, supported by a complementary IR surface emissivity mapper and an advanced accelerometer for orbit control and gravity mapping. This suite will determine topographic changes caused by volcanic, tectonic and atmospheric processes at rates as low as 1 mm a − 1. The Atmosphere Science Suite consists of a Doppler LIDAR for cloud top altitude, wind speed and mesospheric structure mapping, complemented by IR and UV spectrometers and a spectrophotopolarimeter, all designed to map the dynamic features and compositions of the clouds and middle atmosphere to identify the effects of volcanic and solar processes. The Ionosphere Science Suite uses a double Langmiur probe and vector magnetometer to understand the behaviour and long-term evolution of the ionosphere and induced magnetosphere. The suite also includes an interplanetary particle analyser to determine the delivery rate of water and other components to the atmosphere.
Lavvas P, Galand M, Yelle RV, et al., 2011, Energy deposition and primary chemical products in Titan's upper atmosphere, ICARUS, Vol: 213, Pages: 233-251, ISSN: 0019-1035
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- Citations: 110
Cui J, Galand M, Coates AJ, et al., 2011, Suprathermal electron spectra in the Venus ionosphere, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 116, ISSN: 2169-9380
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- Citations: 28
Tinetti G, Cho JY-K, Griffith CA, et al., 2011, The science of EChO, ASTROPHYSICS OF PLANETARY SYSTEMS: FORMATION, STRUCTURE, AND DYNAMICAL EVOLUTION, Pages: 359-370, ISSN: 1743-9213
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- Citations: 5
Moore L, Mueller-Wodarg I, Galand M, et al., 2010, Latitudinal variations in Saturn's ionosphere: Cassini measurements and model comparisons, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 115, ISSN: 2169-9380
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- Citations: 22
Galand M, Yelle R, Cui J, et al., 2010, Ionization sources in Titan's deep ionosphere, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 115, ISSN: 2169-9380
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- Citations: 42
Cui J, Galand M, Yelle RV, et al., 2010, Ion transport in Titan's upper atmosphere, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 115, ISSN: 2169-9380
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- Citations: 45
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