A new technique for the photospheric driving of non-potential solar coronal magnetic field simulations
Date
23/05/2016Funder
Grant ID
RPG-305
PO: 4070103637
ST/K000950/1
AH/F018398/1
ST/N000609/1
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Show full item recordAbstract
In this paper, we develop a new technique for driving global non-potential simulations of the Sun's coronal magnetic field solely from sequences of radial magnetic maps of the solar photosphere. A primary challenge to driving such global simulations is that the required horizontal electric field cannot be uniquely determined from such maps. We show that an "inductive" electric field solution similar to that used by previous authors successfully reproduces specific features of the coronal field evolution in both single and multiple bipole simulations. For these cases, the true solution is known because the electric field was generated from a surface flux-transport model. The match for these cases is further improved by including the non-inductive electric field contribution from surface differential rotation. Then, using this reconstruction method for the electric field, we show that a coronal non-potential simulation can be successfully driven from a sequence of ADAPT maps of the photospheric radial field, without including additional physical observations which are not routinely available.
Citation
Weinzierl , M , Yeates , A , Mackay , D H , Henney , C & Arge , C N 2016 , ' A new technique for the photospheric driving of non-potential solar coronal magnetic field simulations ' , Astrophysical Journal , vol. 823 , no. 1 , 55 . https://doi.org/10.3847/0004-637X/823/1/55
Publication
Astrophysical Journal
Status
Peer reviewed
ISSN
0004-637XType
Journal article
Rights
© 2016, The American Astronomical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at iopscience.iop.org / https://dx.doi.org/10.3847/0004-637X/823/1/55
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