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Recurrent flux emergence from dynamo-generated fields

Published online by Cambridge University Press:  12 August 2011

Jörn Warnecke  and
Axel Brandenburg
Jörn Warnecke
Affiliation:
Nordita, AlbaNova University Center, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden email: joern@nordita.org Department of Astronomy, AlbaNova University Center, Stockholm University, SE 10691 Stockholm, Sweden
Axel Brandenburg
Affiliation:
Nordita, AlbaNova University Center, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden email: joern@nordita.org Department of Astronomy, AlbaNova University Center, Stockholm University, SE 10691 Stockholm, Sweden
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Abstract

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we investigate the emergence of a large-scale magnetic field. This field is dynamo-generated by turbulence driven with a helical forcing function. Twisted arcade-like field structures are found to emerge in the exterior above the turbulence zone. Time series of the magnetic field structure show recurrent plasmoid ejections.

Keywords

Sun: magnetic fieldsSun: coronal mass ejections (CMEs)

References

Parker, E. N. 1979 Cosmical magnetic fields (Clarendon Press, Oxford)Google Scholar
Valori, G., Kliem, B., & Keppens, R. 2005, A&A, 433, 335Google Scholar
Warnecke, J. & Brandenburg, A. 2010, A&A, DOI: 10.1051/0004-6361/201014287CrossRefGoogle Scholar