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arXiv · 1106.4567

Distribution Functions of Sizes and Fluxes Determined from Supra-Arcade Downflows

David E. McKenzie·Sabrina L. Savage
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Abstract

The frequency distributions of sizes and fluxes of supra-arcade downflows (SADs) provide information about the process of their creation. For example, a fractal creation process may be expected to yield a power-law distribution of sizes and/or fluxes. We examine 120 cross-sectional areas and magnetic flux estimates found by Savage & McKenzie for SADs, and find that (1) the areas are consistent with a log-normal distribution and (2) the fluxes are consistent with both a log-normal and an exponential distribution. Neither set of measurements is compatible with a power-law distribution nor a normal distribution. As a demonstration of the applicability of these findings to improved understanding of reconnection, we consider a simple SAD growth scenario with minimal assumptions, capable of producing a log-normal distribution.

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David E. McKenzie, Sabrina L. Savage. 2011-06-22. Distribution Functions of Sizes and Fluxes Determined from Supra-Arcade Downflows. https://doi.org/10.1088/2041-8205%2F735%2F1%2Fl6

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