Towards a precise modelling of transport processes in planetary ionospheres: photoelectrons, magnetospheric electrons and protons - Archive ouverte HAL Access content directly
Conference Papers Year :

Towards a precise modelling of transport processes in planetary ionospheres: photoelectrons, magnetospheric electrons and protons

(1) , (2)
1
2

Abstract

Numerical simulations of planetary ionospheres (Earth, Mars, Venus and Titan) using Boltzmann's kinetic formalism have proved their efficiency in interpreting multi-instrumental data sets. We present now the last evolution of the Trans-* codes family, called Trans4, which takes simultaneously into account photoionisation and electron/proton precipitation effects. The kinetic transport is coupled to a fluid model, which yields electron and ion densities, temperatures, velocities and heating fluxes, directly comparable to incoherent scatter radar measurements. We describe the physics of the model in detail, from chemical inputs to collisions and magnetic mirroring. As an example, a multi-instrumental (ground-based and satellite) data set at high latitudes on Earth is studied, which shows the applicability and the interest of such a code while dealing with complex solar-planetary events. Perspectives on the other planets (Mars, Venus, Titan) are discussed, as well as future extensions (cosmic rays, radiative transfer, polarisation).
Not file

Dates and versions

insu-00366174 , version 1 (06-03-2009)

Identifiers

  • HAL Id : insu-00366174 , version 1

Cite

Cyril Simon, Jean Lilensten. Towards a precise modelling of transport processes in planetary ionospheres: photoelectrons, magnetospheric electrons and protons. 37th COSPAR Scientific Assembly, Jul 2008, Montréal, Canada. ⟨insu-00366174⟩

Collections

INSU UGA CNRS OSUG
22 View
0 Download

Share

Gmail Facebook Twitter LinkedIn More