Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh22a..03s&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH22A-03
Physics
[2101] Interplanetary Physics / Coronal Mass Ejections, [2139] Interplanetary Physics / Interplanetary Shocks, [2154] Interplanetary Physics / Planetary Bow Shocks
Scientific paper
Our understanding of the evolving morphology of coronal mass ejections (CMEs) has advanced significantly after remote-sensing observations became available from the wide fields-of-view from STEREO/SECCHI. However, the most practical way to relate the shock parameters up and downstream to the CME morphology remains with the numerical MHD models. We present 2.5-D numerical investigations of fast CMEs and its associated shock between 10Rs and 250Rs. We display the axis-symmetric results of the CMEs from different speeds and magnetic field strength along the axis of the flux rope structure. We discuss the relationship between the Mach number and density ratio over the shock to the aspect ratio of CMEs. The sheath distance and the size of the CME perpendicular to the spacecraft direction of travel are related to those values estimated from Earth's magnetosphere.
Kusano Kanya
Lugaz Noé
Savani Neel P.
Shiota Daikou
Vourlidas Angelos
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