The Effect of Resistivity on the Periodicity of Oscillatory Reconnection

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 solv...

Full description

Saved in:
Bibliographic Details
Published inarXiv.org
Main Authors Talbot, Jordan, McLaughlin, James A, Botha, Gert J J, Hancock, Mark
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 24.03.2024
Subjects
Current density
Decay rate
Electrical resistivity
Fourier transforms
Wavelet analysis
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:2331-8422