How do emerging magnetic fields affect the solar coronal field configuration?

Details How do emerging magnetic fields affect the solar coronal field configuration? How do emerging magnetic fields affect the solar coronal field configuration?

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh11c0719l&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH11C-0719

Physics

7509 Corona, 7511 Coronal Holes, 7524 Magnetic Fields, 7529 Photosphere

Scientific paper

Experiments are carried out to study the coronal field response to an emerging active region into a simple background global magnetic field using potential field source surface models. The emerging active region used is the radial component of the magnetic field of an emerging flux rope from an ANMHD simulation. When the active region is emerging into a dipole field, it introduces polar coronal hole extensions, warps the source surface neutral lines, and changes the field line connections. The active region internal field line connections are also changed to be different from an isolated active region. The relative strength of the background and active region affect the extent of the changes that occur. The field distribution of the background global field is important, and different background with the same emerging active region may result in different coronal features. A few examples of different background fields with the emerging active region will be presented and compared. A global MHD simulation is also in preparation using the same global magnetic field with the emerging active region as the boundary condition.

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