Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh51c1695l&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SH51C-1695
Astronomy and Astrophysics
Astrophysics
[2111] Interplanetary Physics / Ejecta, Driver Gases, And Magnetic Clouds, [7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections
Scientific paper
The properties of coronal mass ejections (CMEs) as they leave the corona (around 5-15 Rsun), are an important indication of their potential geo-effectiveness. It is, for example, the case for their speed, direction and orientation. However, during the heliosopheric propagation, these properties can change dramatically. Here, we present cases, when a CME expected geo-effectivness is significantly modified during its propagation and when the speed, direction and orientation of a CME at 1 AU can not simply be predicted directly from the properties in the corona. We focus on 3-D MHD simulations of CMEs as well as the analysis of heliospheric observations by STEREO/SECCHI. We present instances of shock-shock interaction, shock-CME interaction as well as cases when a CME is deflected in the heliosphere.
Gombosi Tamas I.
Lugaz Noé
Roussev Ilia I.
Vourlidas Angelos
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