An MHD Simulation of an Emerging Bipole in the Presence of the Solar Wind

Details An MHD Simulation of an Emerging Bipole in the Presence of the Solar Wind An MHD Simulation of an Emerging Bipole in the Presence of the Solar Wind

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh33b0409a&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH33B-0409

Physics

7509 Corona, 7511 Coronal Holes, 7524 Magnetic Fields

Scientific paper

We report on an MHD simulation of a bipole emerging from the solar surface in the presence of the solar wind. The initial field configuration is obtained from a source surface model, with the field at the solar surface defined by a dipole and a bipolar region near the polar axis. We use a 2.5 dimensional MHD code to model the evolution of the bipole in the presence of the solar wind and show that the emerging bipole creates an embedded coronal hole at the location of the spine of the patch of opposite polarity of the emerged bipole. This result is in contrast to source surface models which predict an X-point along the spine. We study the size and properties of the new coronal hole.

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