Physics – Plasma Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh31a1450d&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH31A-1450
Physics
Plasma Physics
[7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections, [7851] Space Plasma Physics / Shock Waves
Scientific paper
We studied the temporal and spatial evolution of a modeled Coronal Mass Ejection (CME) driven shock and it's post-shock compression. Our goal has been to understand how the shock and the post-shock compression, as a whole with it's typical geometrical features, evolve over real time in different directions. We investigated how θ_Bn (the angle between the shock normal and the upstream magnetic field), Vs (shock velocity), Ms (Sonic Mach number), Ma (Alfven Mach number) evolve in real time at different locations on the shock and the post-shock surface. To do this, we used Rankine-Hugoniot (R-H) shock conditions of a 3D MHD shock and compared it with the other popular shock defining parameters. We also comment on the discrepancies and consequences on our observations. The CME has been initiated and then evolved in the lower solar corona with the help of Space Weather modeling Framework with a Titov- Demoulin (TD) type flux rope.
Das Indrajit
Evans Martin R.
Gombosi Tamas I.
Opher Merav
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