Results 41 to 50 of about 6,063 (251)

Self-consistent modelling of Mercury’s exosphere by sputtering, micro-meteorite impact and photon-stimulated desorption [PDF]

, 2010
A Monte-Carlo model of exospheres (Wurz and Lammer, 2003) was extended by treating the ion-induced sputtering process, photon-stimulated desorption, and micro-meteorite impact vaporisationquantitatively in a self-consistent way starting with the actual ...
Whitby, J.A., J.A. Martín-Fernández, Rohner, U., P. Wurz, Martín-Fernández, J.A., U. Rohner, C. Kolb, Kolb, C., H. Lammer, Wurz, P., Lammer, H., J.A. Whitby   +11 more
core   +1 more source

Synodic and semiannual oscillations of argon‐40 in the lunar exosphere

Geophysical Research Letters, 2016
The neutral mass spectrometer on the Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft collected a trove of exospheric data, including a set of high‐quality measurements of radiogenic 40Ar over a period of 142 days. Data synthesis studies,
R. Richard Hodges Jr., Paul R. Mahaffy
doaj   +1 more source

Solar Wind Implantation Into the Lunar Regolith: Monte Carlo Simulations of H Retention in a Surface With Defects and the H2 Exosphere

Journal of Geophysical Research - Planets, 2019
The solar wind implants protons into the top 20–30 nm of lunar regolith grains, and the implanted hydrogen will diffuse out of the regolith but also interact with oxygen in the regolith oxides. We apply a statistical approach to estimate the diffusion of
O. Tucker, W. Farrell, R. Killen, D. Hurley   +3 more
semanticscholar   +1 more source

Recent investigations of the near-Mars space environment by the planetary aeronomy and space physics community in China

Earth and Planetary Physics, 2020
The present issue of Earth and Planetary Physics is dedicated to the near-space neutral and plasma environments of Mars. The issue includes nine papers that present new results on the properties of the Martian exosphere, ionosphere, and magnetosphere ...
Jun Cui, ZhaoJin Rong, Yong Wei, YuMing Wang   +3 more
doaj   +1 more source

The Hubble PanCET program: an extensive search for metallic ions in the exosphere of GJ 436 b [PDF]

Astronomy & Astrophysics, 2019
Context. The quiet M2.5 star GJ 436 hosts a warm Neptune that displays an extended atmosphere that dwarfs its own host star. Predictions of atmospheric escape in such planets state that H atoms escape from the upper atmosphere in a collisional regime and
L. D. Santos, D. Ehrenreich, V. Bourrier, A. D. Étangs, M. López-Morales, D. Sing, G. Ballester, L. Ben-Jaffel, L. Buchhave, A. G. Muñoz, G. Henry, T. Kataria, B. Lavie, P. Lavvas, N. Lewis, T. Mikal-Evans, J. Sanz-Forcada, H. Wakeford   +17 more
semanticscholar   +1 more source

Mercury’s Sodium Exosphere: Anab initioCalculation to InterpretMASCS/UVVS Observations from MESSENGER [PDF]

, 2018
The optical spectroscopy measurements of sodium in Mercury’s exosphere by MESSENGER MASCS/UVVS have been interpreted before with a model employing two exospheric components of different temperatures. Here we use an updated version of the Monte Carlo (MC)
Gamborino, Diana, Wurz, Peter, Vorburger, Audrey   +2 more
core   +1 more source

Neutralized solar wind ahead of the Earth's magnetopause as contribution to non-thermal exospheric hydrogen [PDF]

Annales Geophysicae, 2018
In a most recent paper by Qin and Waldrop (2016), it had been found that the scale height of hydrogen in the upper exosphere of the Earth, especially during solar minimum conditions, appears to be surprisingly large. This indicates that during minimum
H. J. Fahr, U. Nass, R. Dutta-Roy, J. H. Zoennchen   +3 more
doaj   +1 more source

Influence of subsurface diffusion on Mercury's Sodium exosphere [PDF]

, 2023
International audienceIn the 1970's, Mariner 10 preformed the first measurement of the surface bounded exosphere, composed of hydrogen, helium and oxygen of Mercury.
Verkercke, Sébastien, Leblanc, François, Chaufray, Jean-Yves   +2 more
core   +2 more sources

Europa’s Lyman-α emissions from HST/STIS observations

Astronomy & Astrophysics
Context. An image of Lyman-α (Lyα) emission from Europa obtained with the Hubble Space Telescope’s Space Telescope Imaging Spectrograph (HST/STIS) has provided the first evidence of localized water vapor (H2O) aurora, potentially originating from ...
Roth L., Retherford K. D., Saur J., Strobel D. F., Becker T., Bergman S., Blöcker A., Carberry Mogan S. R., Grava C., Ivchenko M., Joshi S., McGrath M. A., Nimmo F., Paganini L., Pryor W., Spencer J. R.   +15 more
doaj   +1 more source

Effect of the Tiger Stripes on the water vapor distribution in Enceladus' exosphere [PDF]

, 2014
The jet activity emanating from Enceladus' exosphere south pole region observed by Cassini is a subject of intensive study. The in situ and remote sensing observations performed since 2005 triggered an active modeling campaign. Such modeling is essential
Öztürk, Doğa Can Su, Combi, Michael R., Tenishev, Valeriy, Martin Rubin, Waite, Jack Hunter, Doğa Can Su Öztürk, Mark Perry, Perry, Mark, Valeriy Tenishev, Rubin, Martin, Jack Hunter Waite, Michael R. Combi   +11 more
core   +1 more source