Results 91 to 100 of about 475 (211)

Arbitrary amplitude ion-acoustic solitary and shock waves in an unmagnetized electron–proton–ion nonthermal plasma [PDF]

AIP Advances
This study thoroughly examines the features of arbitrary amplitude ion-acoustic nonlinear structures, including both solitary and shock waves (double layers), in an unmagnetized electron–proton–ion plasma where electrons follow Cairns distributions and ...
Weaam Alhejaili, Muhammad Khalid, Sahibzada I. H. Bacha, Alim Alim, Samir A. El-Tantawy   +4 more
doaj   +1 more source

Planetary Waves in the Thermosphere-Ionosphere System.

Journal of geomagnetism and geoelectricity, 1996
In the limit of an isothermal atmosphere without dissipation, the equations governing atmospheric motions admit solutions corresponding to “free” (unforced) oscillations for discrete zonal wavenumbers and periods. Global oscillations belonging to the rotational subclass are referred to as free Rossby waves or Rossby normal modes.
openaire   +2 more sources

Growth and Damping of Oxygen Ion Cyclotron Harmonics in the Plasma Regions of Venus

The Astrophysical Journal
As altitude decreases in the Venusian plasma environment, the plasma density increases sharply, the magnetic field strength changes, ion temperatures decrease, and the number density of heavier ions increases.
Amrutha, S. V. Singh, K. C. Barik, G. S. Lakhina   +3 more
doaj   +1 more source

Stellar Ablation of Planetary Atmospheres [PDF]

, 2007
We review observations and theories of the solar ablation of planetary atmospheres, focusing on the terrestrial case where a large magnetosphere holds off the solar wind, so that there is little direct atmospheric impact, but also couples the solar wind ...
Moore, Thomas E., Horwitz, J. L., J. L. Horwitz, T. E. Moore   +3 more
core  

Advancing CO2++ Modeling in the Martian Dayside Ionosphere: Insights from Natural Lifetime Analysis

The Astrophysical Journal
The molecular dication CO _2 ^++ has, as previously reported, been detected in the Martian ionosphere by the Neutral Gas and Ion Mass Spectrometer on the Mars Atmosphere and Volatile Evolution (MAVEN) mission.
Long Cheng, Erik Vigren, Moa Persson, Hao Gu, Jun Cui   +4 more
doaj   +1 more source

A Massively Parallel Hybrid Dusty-Gasdynamics and Kinetic Direct Simulation Monte Carlo Model for Planetary Applications [PDF]

, 2004
In order to understand the global structure, dynamics, and physical and chemical processes occurring in the upper atmospheres, exospheres, and ionospheres of the Earth, the other planets, comets and planetary satellites and their interactions with their ...
Combi, Michael R.
core  

Heating of the Atmospheres of Short-orbit Exoplanets by Their Rapid Orbital Motion through an Extreme Space Environment

The Astrophysical Journal
Exoplanets with short orbit periods reside very close to their host stars. They transition very rapidly between different sectors of the circumstellar space environment along their orbit, leading to large variations of the magnetic field in the vicinity ...
Ofer Cohen, Alex Glocer, Cecilia Garraffo, Julián D. Alvarado-Gómez, Jeremy J. Drake, Kristina Monsch, Farah Fauth Puigdomenech   +6 more
doaj   +1 more source

Statistical properties of hot flow anomalies around Mars

Earth and Planetary Physics
Hot flow anomalies (HFAs) are not only a terrestrial phenomenon, but also a solar-system-wide phenomenon, one that can cause significant perturbations in planetary magnetospheres and ionospheres.
MingYu Wu, HeYin Wang, Lei Wang, GuoQiang Wang, SuDong Xiao, YangJun Chen, Qi Lü, Peng E, AiMin Du, TieLong Zhang   +9 more
doaj   +1 more source

The electric wind of Venus: A global and persistent “polar wind”‐like ambipolar electric field sufficient for the direct escape of heavy ionospheric ions

Geophysical Research Letters, 2016
Understanding what processes govern atmospheric escape and the loss of planetary water is of paramount importance for understanding how life in the universe can exist.
Glyn A. Collinson, Rudy A. Frahm, Alex Glocer, Andrew J. Coates, Joseph M. Grebowsky, Stas Barabash, Shawn D. Domagal‐Goldman, Andrei Fedorov, Yoshifumi Futaana, Lin K. Gilbert, George Khazanov, Tom A. Nordheim, David Mitchell, Thomas E. Moore, William K. Peterson, John D. Winningham, Tielong L. Zhang   +16 more
doaj   +1 more source

Bridging Model–Data Discrepancies in Mars’ Dayside Ionosphere: Exploring Varying Reaction Rate Coefficients

The Astrophysical Journal
Measurements of concentrations of neutral and ion species in the upper atmosphere of Mars by the Neutral Gas and Ion Mass Spectrometer (NGIMS) on board the Mars Atmosphere and Volatile EvolutioN mission have served as model input and/or for comparison ...
M. Persson, E. Vigren
doaj   +1 more source