Rapid magnetic reconnection caused by finite amplitude fluctuations
作者:
W. H. Matthaeus,
S. L. Lamkin,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1985)
卷期:
Volume 28,
issue 1
页码: 303-307
ISSN:0031-9171
年代: 1985
DOI:10.1063/1.865147
出版商: AIP
数据来源: AIP
摘要:
The nonlinear dynamics of the magnetohydrodynamic sheet pinch have been investigated as an unforced initial value problem for large scale Reynolds numbers up to 1000. Reconnection is triggered by adding to the sheet pinch a small but finite level of broadband random perturbations. Effects of turbulence in the solutions include the production of reconnected magnetic islands at rates that are insensitive to resistivity at early times. This is explained by noting that electric field fluctuations near the X point produce irregularities in the vector potential, sometimes taking the form of ‘‘magnetic bubbles,’’ which allow rapid change of field topology.
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