Results 141 to 150 of about 319 (179)

Modification of the Martian ionosphere by the solar wind

Journal of Geophysical Research, 1969
Dynamic model for Martian ionosphere modification by solar wind, assuming negligible Mars magnetic moment and neutral ...
P. A. Cloutier, M. B. McElroy, F. C. Michel   +2 more
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The Martian ionosphere in light of the Viking observations

Journal of Geophysical Research: Space Physics, 1978
A theoretical model has been constructed in which the ion density and the ion and electron temperature distributions are calculated by solving the coupled continuity‐momentum equations and the coupled energy equations. The latest experimental results from the Viking 1 and 2 landers are used to vary some of the parameters in the model in order to obtain
R. H. Chen, T. E. Cravens, A. F. Nagy
openaire   +1 more source

Ionospheric Plasma Transported into the Martian Magnetosheath

2021
<p>How the heavy ionospheric ions escape the Martian atmosphere is still not solved. Missions such as the Mars Express (MEX) satellite have observed significant heavy ions (O<sub>2<sup>+</sup></sub> and Co<sub>2<sup>+</sup></sub>
Laila Andersson, Scott Thaller, Christopher Fowler, Gina DiBraccio, Kai Poh   +4 more
openaire   +1 more source

Martian Ionospheric Observation and Modelling

2020
Abstract The Martian ionosphere is a plasma embedded within the neutral upper atmosphere of the planet. Its main source is the ionization of the CO2-dominated Martian mesosphere and thermosphere by energetic EUV solar radiation. The ionosphere of Mars is subject to an important variability induced by changes in its forcing mechanisms (
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The Martian thermosphere/ionosphere at high and low solar activities

Advances in Space Research, 1996
Abstract We compare here models of the thermosphere/ionosphere of Mars at low and high solar activities, and we present heating rates and efficiencies due to the absorption of solar radiation in the 18 to 2000 A range. Using neutral model densities from the NCAR Mars Thermospheric General Circulation Model (MTGCM) of Bougher and co-workers, and solar
Fox, Jane L., Bougher, Stephen W., Zhou, P.   +2 more
openaire   +4 more sources

The Structure of the Martian Ionosphere

After multiple Martian years and almost one full solar cycle in orbit, measurements from the MAVEN mission can now allow us to study the ionosphere. The statistical structure of the Martian ionosphere is assessed and presented here as a step towards a new empirical Martian Ionospheric Model for electron density and ...
Laila Andersson, Marcin Pilinski, Duncan Bark, Skylar Shaver, Troy Hesse, Sergey Shuvalov, David Andrews   +6 more
openaire   +1 more source

On the Gravity Wave‐Seeded Ionospheric Irregularities in the Martian Ionosphere

Journal of Geophysical Research: Planets
Abstract For the past few decades, it has been demonstrated that gravity waves (GWs) and neutral winds can drive ionospheric irregularities on Earth. Still, as far as we know, the formation of ionospheric irregularities on Mars due to GWs has not been well studied.
Rong Tian, Chunhua Jiang, Beatriz Sánchez‐Cano, Wenjie Yin, Guobin Yang, Tongxin Liu, Yaogai Hu   +6 more
openaire   +1 more source

Three-Dimensional Martian Ionosphere Model: I. The Photochemical Ionosphere Below 180 km [PDF]

Journal of Geophysical Research E: Planets, 2013
We describe the Mars ionosphere with unprecedented detail in 3‐D, as simulated by a Mars general circulation model (the Laboratoire de Météorologie Dynamique Mars GCM), and compare it with recent measurements. The model includes a number of recent extensions and improvements. Different simulations for a full Martian year have been performed.
Ronan Modolo, Sebastien Hess, Francisco González-Galindo   +2 more
exaly   +5 more sources

Ion-neutral reactions in the martian ionosphere

Planetary and Space Science, 1966
Abstract A number of reactions that might be important in the martian ionosphere have been studied and their rate coefficients have been measured with a pulsed flowing afterglow system. One of the most important of these is O+ + CO2 → O2+ + CO, which has a rate coefficient of about 10−9 cm+3 sec−1.
R.B. Norton, E.E. Ferguson, F.C. Fehsenfeld, A.L. Schmeltekopf   +3 more
openaire   +1 more source

Electron impact ionization in the Martian ionosphere

AIP Conference Proceedings, 2007
A number of distinct hot plasma flux tubes are detected in the Martian ionosphere, primarily formed when the magnetospheric plasma is magnetically connected to the upper ionosphere. The electron reflectometer measurements have shown that magnetospheric electrons are sometimes observed not only close to the ionopause, but at low altitudes (
K. Dialynas, G. Babasides, N. Sergis, X. Moussas   +3 more
openaire   +1 more source