Study of the ionosphere of Mars: application and limitations of the Chapman-layer model

Details Study of the ionosphere of Mars: application and limitations of the Chapman-layer model Study of the ionosphere of Mars: application and limitations of the Chapman-layer model

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011hsa6.conf..601s&link_type=abstract

Highlights of Spanish Astrophysics VI, Proceedings of the IX Scientific Meeting of the Spanish Astronomical Society (SEA), held

Astronomy and Astrophysics

Astrophysics

Scientific paper

The study of data from Viking, Mars Global Surveyor and Mars Express missions is enabling a rapid progress in the knowledge of ionosphere of Mars. Although the Earth's ionosphere is a reference is necessary to note that Mars doesn't have a global magnetic field to form a magnetosphere and the composition of his atmosphere is very different from the case of the Earth. Therefore, the effect of solar wind on the atmosphere, chemical reactions and ionization processes are very different in the two planets. For this reason there may be doubts about the applicability of terrestrial ionospheric models to the ionosphere of Mars. In a first step in this line of study we have applied the Chapman layer model to a significant number of radio-occultation data obtained by the Mars Global Surveyor mission to check the validity range for the fit of the electron density profiles. We also analyze the status of the ionosphere under different conditions of latitude, longitude, time of observation, Martian seasons and solar activity to compare these results with the characteristics and variations in the Earth's ionosphere.

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