Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh51c1696a&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SH51C-1696
Physics
[2101] Interplanetary Physics / Coronal Mass Ejections, [2194] Interplanetary Physics / Instruments And Techniques
Scientific paper
Magnetic clouds make up about one third of interplanetary coronal mass ejections (iCMEs) and are an essential driver of our space weather. They are characterized by the smooth rotation of the magnetic field inside them, among other properties. This has resulted in the current paradigm of associating magnetic clouds with twisted flux ropes. In this poster, we test this assumption by using a new model of solar eruption. Using results from a 3-D MHD simulation with the SWMF, we perform a “blind” reconstruction of the magnetic structure of the iCME using simulated satellite data and the Grad-Shafranov (GS) code. The 2-D reconstruction from the GS code is in relatively good agreement with the simulations. However, the 3-D structure of the iCME, in the simulation, does not exhibit much magnetic twist but when reconstructed from synthetic satellite data, it appears to have typical characteristics of a magnetic cloud, due in particular to a writhe in the magnetic field lines.
Al-haddad N. A.
Jacobs Carla
Lugaz Noé
Moestl C.
Roussev Ilia I.
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