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Generation of Quasi-periodic Waves and Flows in the Solar Atmosphere by Oscillatory Reconnection View all abstracts by submitter

James McLaughlin   Submitted: 2012-04-03 03:57

We investigate the long-term evolution of an initially buoyant magnetic flux tube emerging into a gravitationally stratified coronal hole environment and report on the resulting oscillations and outflows. We perform 2.5-dimensional nonlinear numerical simulations, generalizing the models of McLaughlin et al. (2009) and Murray et al. (2009). We find that the physical mechanism of oscillatory reconnection naturally generates quasi-periodic vertical outflows, with a transverse/swaying aspect. The vertical outflows consist of both a periodic aspect and evidence of a positively directed flow. The speed of the vertical outflow (20-60 km s-1) is comparable to those reported in the observational literature. We also perform a parametric study varying the magnetic strength of the buoyant flux tube and find a range of associated periodicities: 1.75-3.5 minutes. Thus, the mechanism of oscillatory reconnection may provide a physical explanation to some of the high-speed, quasi-periodic, transverse outflows/jets recently reported by a multitude of authors and instruments.

Authors: McLaughlin, J. A., Verth, G., Fedun, V., Erdélyi, R.
Projects: None

Publication Status: ApJ (2012) 749, 30
Last Modified: 2012-04-04 08:13
Go to main E-Print page  Effect of Solar Wind Drag on the Determination of the Properties of Coronal Mass Ejections from Heliospheric Images  Energetic Particle Diffusion In Structured Turbulence  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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