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arXiv 1106.4567astro-ph.SR
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由超拱廊下流确定的尺度和通量分布函数

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

David E. McKenzie, Sabrina L. Savage

摘要:

超拱廊下行流(SAD)的大小和通量的频率分布提供了有关其创建过程的信息。例如,可以预期分形创建过程产生尺寸和/或通量的幂律分布。我们检查了Savage和McKenzie对SAD的120个横截面积和磁通量估计,发现(1)面积符合对数正态分布,(2)磁通量符合对数正态分布和指数分布。这两组测量值都不符合幂律分布或正态分布。作为这些研究结果的适用性,以提高对重连的理解的演示,我们考虑一个简单的SAD增长的情况下,最小的假设,能够产生一个对数正态分布。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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