Results 81 to 90 of about 1,980 (216)

Storm-time variability of terrestrial hydrogen exosphere: kinetic simulation results

Frontiers in Astronomy and Space Sciences
Recent studies of TWINS Lyman-α observations have reported an increase in geocoronal column brightness during geomagnetic storms, indicating enhanced exospheric hydrogen atom density (NH).
Hyunju K. Connor, Jaewoong Jung, Jaewoong Jung, Liying Qian, Eric K. Sutton, Gonzalo Cucho-Padin, Gonzalo Cucho-Padin, Morgen Crow, Sang-Yun Lee, Sang-Yun Lee   +9 more
doaj   +1 more source

Long‐Term Variability of Mars' Exosphere Density Based on Precise Orbital Analysis of Mars Reconnaissance Orbiter and Mars Odyssey

Geophysical Research Letters
The variability of Mars exosphere over monthly to solar‐cycle scales at 251 and 412 km altitude is quantified by analysis of 41‐Ls mean densities derived from precise orbit determination of the Mars Reconnaissance Orbiter (MRO) and Mars Odyssey (MO ...
J. M. Forbes, S. L. Bruinsma, X. Zhang, J.‐C. Marty, S. Laurens   +4 more
doaj   +1 more source

Impact of a Coronal Mass Ejection on the Lunar Exosphere as Observed by CHACE‐2 on the Chandrayaan‐2 Orbiter

Geophysical Research Letters
The Moon encountered an extreme space weather event (NOAA G5 class) on 10 May 2024, caused by a series of coronal mass ejections (CMEs). Chandra's Atmospheric Composition Explorer‐2 (CHACE‐2), a neutral gas mass spectrometer on board Chandrayaan‐2 ...
M. B. Dhanya, Chemukula Mathin Yadav, Smitha V. Thampi, Tirtha Pratim Das, R. Satheesh Thampi, Anil Bhardwaj   +5 more
doaj   +1 more source

Two dimensional mapping of the sodium emission in Europa's exosphere [PDF]

, 2007
We present results of the mapping of Europa's sodium exosphere in two dimensions and through a period of time. We base this research on several observations taken in 2001 and 2002 with the McMath-Pierce Solar Telescope at Kitt Peak, Arizona.
Fraga-Encinas, Raquel
core  

Potential relations between Caloris basin and Mercury's sodium exosphere

, 2006
We have developed a 1D thermal model of Mercury's regolith, in order to simulate the heat diffusion in the upper subsurface (first 10 m). We assume in our model that the thermophysical properties of the Hermean regolith are similar to those of the lunar ...
Yan, Nicolas, Leblanc, François, Chassefière, Eric   +2 more
core   +1 more source

Probabilistic Modeling of Lunar Topography for Exosphere Simulations and Implications for Helium, Neon, and Argon

The Planetary Science Journal
We introduce a numerically efficient approach to include lunar surface topography in Monte Carlo exosphere simulations by sampling slope and azimuth angles from latitude-dependent Lunar Orbiter Laser Altimeter distributions and rotating particle release ...
Alexander Peschel, Cesare Grava, Jakob Breternitz, Philipp Reiss   +3 more
doaj   +1 more source

Meteoritic influence on sodium and potassium abundance in the lunar exosphere measured by LADEE

Geophysical Research Letters, 2016
The Lunar Atmosphere and Dust Environment Explorer (LADEE) orbited the Moon for approximately 6 months, taking data with the Lunar Dust Experiment (LDEX), Ultraviolet‐Visible Spectrometer (UVS), and Neutral Mass Spectrometer (NMS).
Jamey R. Szalay, Mihály Horányi, Anthony Colaprete, Menelaos Sarantos   +3 more
doaj   +1 more source

Spectrum of hydromagnetic waves in the exosphere

, 1962
Spectrum of hydromagnetic waves in exosphere due to magnetic ...
Mac Donald, G. J. F.
core  

Titans exosphere and its interaction with Saturns magnetosphere

, 2008
Titan's nitrogen-rich atmosphere is directly bombarded by energetic ions, due to its lack of a significant intrinsic magnetic field. Singly charged energetic ions from Saturn's magnetosphere undergo charge-exchange collisions with neutral atoms in Titan ...
Garnier, Philippe,, Brandt, Pontus C., Krimigis, Stamatios M., Mitchell, Donald G., Mitchell, D. G., Brandt, P. C., Krupp, N., Garnier, P., Krimigis, S. M., Dandouras, Iannis, Krupp, Norbert, Roelof, Edmond C., Dandouras, I., Krimigis, S., Roelof, E. C., Brandt, P., Mitchell, D., Roelof, E.   +17 more
core   +1 more source

Theoretical Calculations on the Effect of Adsorbed Atom Coverage on the Sodium Exospheres of Airless Bodies

The Astrophysical Journal
Our ability to understand the formation of the exospheres of airless bodies such as the Moon and Mercury has been hindered by uncertainties in how surface processes influence exospheric sources.
Liam S. Morrissey, Jesse Lewis, Amanda Ricketts, Deborah Berhanu, Caixia Bu, Chuanfei Dong, Denton S. Ebel, George E. Harlow, Ziyu Huang, Francois Leblanc, Menelaos Sarantos, Sebastien Verkercke   +11 more
doaj   +1 more source