Dissemin is shutting down on January 1st, 2025

Published in

American Geophysical Union, Geophysical Research Letters, 21(42), p. 9095-9102, 2015

DOI: 10.1002/2015gl065304

Links

Tools

Export citation

Search in Google Scholar

Response of Mars O + pickup ions to the 8 March 2015 ICME: Inferences from MAVEN data-based models : RESPONSE OF MARS PICKUP IONS TO AN ICME

This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Orange circle
Published version: archiving restricted
Data provided by SHERPA/RoMEO

Abstract

We simulate and compare three phases of the Mars-solar wind interaction with the 8 March interplanetary coronal mass ejection (ICME) event using Mars Atmosphere and Volatile EvolutioN (MAVEN) mission observations in order to derive heavy ion precipitation and escape rates. The MAVEN observations provide the initial conditions for three steady state MHD model cases, which reproduce the observed features in the solar wind density, velocity, and magnetic field seen along the MAVEN orbit. Applying the MHD results to a kinetic test particle model, we simulate global precipitation and escape maps of O+ during the (1) pre-ICME phase, (2) sheath phase, and (3) ejecta phase. We find that the Case 1 had the lowest precipitation and escape rates of 9.5 × 10^25 and 4.1 × 10^25 s^-1, Case 2 had the highest rates of 9.5 × 10^25 and 4.1 × 10^25 s^-1, and Case 3 had rates of 3.2 × 1025 and 1.3 × 1025 s^-1, respectively. Additionally, Case 2 produced a high-energy escaping plume >10 keV, which mirrored corresponding STATIC observations.