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Modeling atmospheric escape from exoplanets [PDF]
Atmospheric escape, where exoplanets lose their atmospheres to space, plays a critical role in planetary evolution, potentially stripping gaseous planets of a large portion of their envelopes, or eroding rocky planets' atmospheres, affecting their ...
Linssen, D.C.
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THERMALLY DRIVEN ATMOSPHERIC ESCAPE [PDF]
The Astrophysical Journal, 2010 Accurately determining escape rates from a planet's atmosphere is critical for determining its evolution. Escape can be driven by upward thermal conduction of energy deposited well below the exobase, as well as by non-thermal processes produced by energy deposited in the exobase region. Recent applications of a model for escape driven by upward thermal
openaire +2 more sources
The Escape of Planetary Atmospheres [PDF]
Symposium - International Astronomical Union, 1974 The problem of escape of atmospheres from the Moon and planets has roots deep in ancient history. Many of the great philosophers of the past regarded the Earth's atmosphere as a medium extending to infinity, with a stationary Earth imbedded at the center.
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Earth and Planetary Physics, 2022 Tailward ion outflows in the Martian-induced magnetotail are known to be one of the major channels for Martian atmospheric escape. On the basis of nearly 6.5 years of observations from the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission, we ...
HengLe Du +7 more
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Non-thermal escape on Triton driven by atmospheric and ionospheric chemistry
, 2021 Context. Jeans escape is believed to dominate atmospheric escape for most outer Solar System bodies. However, non-thermal mechanisms, particularly atmospheric and ionospheric chemistry, are likely to contribute substantially to neutral escape on Triton ...
Y. Wei, D.-D. Niu, F. He, X.-S. Wu
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Detection of Atmospheric Escape from Four Young Mini-Neptunes
The Astronomical Journal, 2023 We use Keck/NIRSPEC to survey a sample of of young (
Michael Zhang +7 more
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Observing Atmospheric Escape in Sub-Jovian Worlds with JWST
The Astronomical Journal, 2023 Hydrodynamic atmospheric escape is considered an important process that shapes the evolution of sub-Jovian exoplanets, particularly those with short orbital periods.
Leonardo A. Dos Santos +3 more
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THERMALLY DRIVEN ATMOSPHERIC ESCAPE: TRANSITION FROM HYDRODYNAMIC TO JEANS ESCAPE [PDF]
The Astrophysical Journal, 2011 Thermally-driven atmospheric escape evolves from an organized outflow (hydrodynamic escape) to escape on a molecule by molecules basis (Jeans escape) with increasing Jeans parameter, the ratio of the gravitational to thermal energy of molecules in a planet's atmosphere.
Volkov, Alexey N. +3 more
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The Influence of Planetary and Stellar Characteristics on Atmospheric Escape and Habitability
, 2023 International audienceAtmospheric escape occurs at planets everywhere, and influences the evolution of planetary atmospheres and surface habitability. We argue for developing a common understanding of atmospheric escape that accounts for different star ...
Dave Brain +27 more
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Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy
Advanced Engineering Materials, EarlyView.A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang +10 more
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