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Simulating the ''sliding doors'' effect through magnetic flux emergence View all abstracts by submitter

David MacTaggart   Submitted: 2010-05-28 06:42

Recent Hinode photospheric vector magnetogram observations (Okamoto et al. 2008, 2009) have shown the opposite polarities of a long arcade structure move apart and then come together. In addition to this ''sliding doors'' effect, orientations of horizontal magnetic fields along the polarity inversion line (PIL) on the photosphere evolve from a normal-polarity configuration to an inverse one. To explain this behaviour, a simple cartoon model suggested that it is the result of the emergence of a twisted flux rope. Here we model this scenario using a 3D MHD simulation of a twisted flux rope emerging into a pre-existing overlying arcade. We construct magnetograms from the simulation and compare them with the observations. The model produces the two signatures mentioned above. However, the cause of the ''sliding doors'' effect differs from the previous cartoon model.

Authors: David MacTaggart, Alan Hood
Projects: None

Publication Status: Accepted by ApJ Letters
Last Modified: 2010-05-29 05:26
Go to main E-Print page  Multiwavelength Study of M8.9/3B Solar Flare from AR NOAA 10960  Anatomy of a solar flare: Part I. The solar quake measurements of the December 14, 2006 X-class flare with GONG, Hinode and RHE  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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