Results 91 to 100 of about 2,351 (233)

Statistical properties of hot flow anomalies around Mars

open access: yesEarth 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   +9 more
doaj   +1 more source

Development of a computational model for predicting solar wind flows past nonmagnetic terrestrial planets [PDF]

open access: yes
A computational model for the determination of the detailed plasma and magnetic field properties of the global interaction of the solar wind with nonmagnetic terrestrial planetary obstacles is described.
Spreiter, J. R., Stahara, S. S.
core   +1 more source

Asymmetrically Distributed Kelvin‐Helmholtz Instability at Venusian Magnetosphere

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The asymmetric distribution of Kelvin‐Helmholtz (KH) instability at Venusian ionopause is investigated using a multifluid model. Results show that KH instability distributes asymmetrically, preferentially developing in the −E (anti‐parallel to the interplanetary electric field) hemisphere.
Maodong Yan   +7 more
wiley   +1 more source

Radio propagation through solar and other extraterrestrial ionized media [PDF]

open access: yes
The present S- and X-band communications needs in deep space are addressed to illustrate the aspects which are affected by propagation through extraterrestrial plasmas. The magnitude, critical threshold, and frequency dependence of some eight propagation
Edelson, R. E., Smith, E. K.
core   +1 more source

Observations and Simulation of Thermospheric Composition Changes During the 14 October 2023 Solar Eclipse

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract This study presents a full‐period imaging of the thermospheric composition response to the 14 October 2023 annular solar eclipse, combining GOLD (Global‐scale Observations of the Limb and Disk) far‐ultraviolet observations with solar‐irradiance‐driven WACCM‐X (Whole Atmosphere Community Climate Model with thermosphere–ionosphere extension ...
Yu Jiao   +4 more
wiley   +1 more source

Revealing the CME Impact on the Martian Nightside Ionosphere Based on MAVEN and Tianwen-1 Observations

open access: yesThe Astrophysical Journal
Due to the absence of an Earth-like dipole magnetic field, the impact of coronal mass ejections (CMEs) on the Martian nightside ionosphere differs from that on Earth and is still not well understood.
Longhui Liu   +8 more
doaj   +1 more source

Studies of the role of metastables and doubly ionized species in the chemical and thermal structure of the Venusian and Martian ionospheres [PDF]

open access: yes
Models of the upper atmospheres of Mars and Venus were constructed using Viking and Pioneer Venus data. The neutral densities, with the exception of NO, N(4S), N(2D) and N(2P) were taken from the measured values, along with the neutral, ion, and electron
Fox, J. L.
core   +1 more source

Daytime Ionospheric Density Enhancement Driven by Poleward Neutral Wind Shear Associated With Gravity Waves During the November 2025 Geomagnetic Storm

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The threefold daytime electron density increases, along with strong poleward meridional winds exceeding 200 m/s were captured by Sanya Incoherent Scatter Radar (SYISR) during the geomagnetic storm of 12 November 2025. The great ionospheric enhancements were extending to mid‐latitudes over 40° observed by total electron content (TEC) from ...
Qi Jiang   +7 more
wiley   +1 more source

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

open access: yesThe 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

Calculation of solar wind flows about terrestrial planets [PDF]

open access: yes
A computational model was developed for the determination of the plasma and magnetic field properties of the global interaction of the solar wind with terrestrial planetary magneto/ionospheres.
Spreiter, J. R., Stahara, S. S.
core   +1 more source

Home - About - Disclaimer - Privacy