Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh23b1843s&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SH23B-1843
Astronomy and Astrophysics
Astrophysics
[7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields, [7959] Space Weather / Models
Scientific paper
We study the 25 July 2004 event. By analyzing SOHO EIT images we establish a basic understanding of the large-scale interaction going on during this event. Magnetic reconnection between the expanding CME and the Southern hemispheric active regions (AR) will connect the leading polarities of the two ARs, lead to brightening in the ARs and transport CME field line foot points to distant ARs (observable as dimming at the foot points).We reproduce the large scale interactions during this event using three-dimensional magneto-hydrodynamic (MHD) simulations. We superimpose a magnetic source region that resembles the SOHO MDI images on a basic wind model. By emerging new flux at the centre of this region we initiate a Coronal Mass Ejection (CME). We monitor the evolution of this CME and study its interaction with the source region.
Jacobs Carla
Lapenta Giovanni
Poedts Stefaan
Soenen Alexander
Torok Tibor
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