Results 91 to 100 of about 1,980 (216)
Seasonal Effects of the Changing Photon Scattering Rates on Mercury’s Exospheric Structure
The Planetary Science JournalEmission in Mercury’s exosphere observed from the ground and by spacecraft is produced by resonant scattering of sunlight. The process of resonant scattering changes the structure of the exosphere owing to the transfer of momentum between the incident ...
Matthew H. Burger +5 more
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Search for spectroscopical signatures of transiting HD 209458b's exosphere
, 2001 Following recent attempts to detect the exosphere of the extra-solar planet 51 Pegb in the infrared (Coustenis et al. [CITE], [CITE]; Rauer et al. [CITE]), we discuss here a search for optical spectroscopic signatures from a gaseous extended envelope (
A. Kaufer +6 more
core +1 more source
The Planetary Science JournalTo better assess the role that electrons play in exosphere production on icy bodies, we measured the total and O _2 sputtering yields from H _2 O ice for electrons with energies between 0.75 and 10 keV and temperatures between 15 and 124.5 K.
Rebecca A. Carmack, Mark J. Loeffler
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Modeling Results on the Seasonal Influence at the Martian Exosphere
, 2015 International audienceAnalysis of HST ACS/SBC images of Mars in the far-ultraviolet taken in Oct-Nov 2007 and May-November 2014 indicate seasonal influence as a driving factor of the hydrogen corona, as has been reported earlier. To derive the changes in
Mayyasi, Majd +4 more
core
Surface Response of Mercury’s Sulfides under Solar Wind Ion Irradiation
The Planetary Science JournalThe MESSENGER mission revealed unexpectedly high sulfur content within Mercury’s surface, deviating from the lunar regolith, which was until recently considered a good Mercury analog.
Noah Jäggi, Catherine A. Dukes
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Observations of Mercury's Exosphere: Composition and Structure
, 2018 Mercury is surrounded by a tenuous exosphere in which particles travel on ballistic trajectories under the influence of a combination of gravity and solar radiation pressure.
Cassidy, Timothy A. +5 more
core
Geophysical Research LettersMercury is surrounded by a tenuous neutral exosphere composed primarily of sodium atoms, which can be continuously ionized. The production of sodium ions is concentrated on the dayside, and these ions can subsequently be transported to the magnetotail ...
Yuxi Chen, Chuanfei Dong, Weijie Sun
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Frontiers in Astronomy and Space SciencesHighly charged ions in the solar wind undergo charge exchange with neutral atoms in the Earth’s exosphere, particularly within the magnetosheath and cusps.
Jaewoong Jung +5 more
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A New Mechanism for Early-Time Plasmaspheric Refilling: The Role of Charge Exchange Reactions in the Transport of Energy and Mass Throughout the Ring Current-Plasmasphere System. [PDF]
J Geophys Res Space Phys, 2022 Liu J, Ilie R, Borovsky JE, Liemohn MW.
europepmc +1 more source
Thermally Driven Atmospheric Escape: Transition from Diffusion-limited to Drag-off Escape
The Planetary Science JournalWe examine the transition from diffusion-limited to drag-off escape using a direct simulation Monte Carlo (DSMC) model developed to simulate planetary atmospheres, referred to as Harrah.
Jack C. Evans +3 more
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