Results 21 to 30 of about 1,980 (216)

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

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

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

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

Kinetic modeling of sodium in the lunar exosphere

, 2013
Our knowledge about the lunar environment is based on a large volume of ground-based, remote, and in situ observations. These observations have been conducted at different times and sampled different pieces of such a complex system as the surface-bound ...
Combi, Michael R., Tenishev, Valeriy, Sarantos, Menelaos, Tucker, Orenthal J., Rubin, Martin   +4 more
core   +1 more source

The long egress of GJ 436b’s giant exosphere [PDF]

, 2017
The M dwarf GJ 436 hosts a transiting warm Neptune known to experience atmospheric escape. Previous observations revealed the presence of a giant hydrogen exosphere transiting the star for more than 5 h, and absorbing up to 56% of the flux in the blue ...
Delfosse, X., Ehrenreich, D., A. Vidal-Madjar, X. Delfosse, K. Heng, Thomas, N., Thomas, Nicolas, B. Lavie, Bourrier, V., Heng, K., A. Lecavelier des Etangs, D. Ehrenreich, Lavie, Baptiste, Udry, S., Heng, Kevin, Vidal-Madjar, A., A. Gracia Berna, P. J. Wheatley, V. Bourrier, Lavie, B., S. Udry, N. Thomas, Wheatley, P. J., Gracia Berna, A., Lecavelier des Etangs, A.   +24 more
core   +1 more source

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

A DETECTION OF Hα IN AN EXOPLANETARY EXOSPHERE [PDF]

The Astrophysical Journal, 2012
We report on a search for H-alpha absorption in four exoplanets. Strong features at H-alpha are observed in the transmission spectra of both HD 189733b and HD 209458b. We attempt to characterize and remove the effects of stellar variability in HD 189733b, and along with an empirical Monte Carlo test the results imply a statistically significant transit-
Jensen, Adam G., Redfield, Seth, Endl, Michael, Cochran, William D., Koesterke, Lars, Barman, Travis   +5 more
openaire   +3 more sources

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

Three‐Dimensional Modeling of Callisto's Surface Sputtered Exosphere Environment [PDF]

, 2019
We study the release of various elements from Callisto's surface into its exosphere by plasma sputtering. The cold Jovian plasma is simulated with a 3‐D plasma‐planetary interaction hybrid model, which produces 2‐D surface precipitation maps for ...
Wurz, Peter,, Mats Holmström, Herbert I. M. Lichtenegger, Vorburger, Audrey,, Lindkvist, Jesper, Pfleger, Martin, Holmström, Mats,, Martin Pfleger, Lammer, Helmut,, Lindkvist, Jesper,, Holmström, Mats, Lichtenegger, Herbert I. M.,, Audrey Vorburger, Martin Rubin, Vorburger, Audrey Helena, Lammer, Helmut, Pfleger, Martin,, André Galli, Wurz, Peter, Helmut Lammer, Lichtenegger, Herbert I. M., Jesper Lindkvist, Rubin, Martin, Galli, André, Peter Wurz   +24 more
core   +1 more source