The Effect of Resistivity on the Periodicity of Oscillatory Reconnection

Jordan Talbot*, James A. McLaughlin, Gert J. J. Botha, Mark Hancock

*Corresponding author for this work

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    Abstract

    The oscillatory reconnection mechanism is investigated for a parameter study of eight orders of magnitude of resistivity, with a particular interest in the evolution of the oscillating current density at the null point and its associated periodicity. The resistive, nonlinear MHD simulations are solved in 2.5D for different levels of resistivity. Three methods (wavelet analysis, Fourier transform, and ANOVA) are used to investigate the effect of resistivity versus resultant period. It is found that there is an independence between the level of background resistivity and the period of the oscillatory reconnection mechanism. Conversely, it is found that resistivity has a significant effect on the maximum amplitude of the current density and the nature of its decay rate, as well as the magnitude of ohmic heating at the null.
    Original languageEnglish
    Article number133
    Pages (from-to)1-13
    Number of pages13
    JournalThe Astrophysical Journal
    Volume965
    Issue number2
    DOIs
    Publication statusPublished - 15 Apr 2024

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