论文标题
Power Law的通用性在太阳光球和过渡区域中观察到了HMI和Iris的过渡区域
The Universality of Power Law Slopes in the Solar Photosphere and Transition Region Observed with HMI and IRIS
论文作者
论文摘要
我们使用来自Helioseissic和磁成像仪（HMI）和界面区域成像光谱仪（IRIS）}数据的磁力图数据比较了太阳光球和过渡区域中自组织临界（SOC）系统的大小分布。对于每个数据集，我们符合高斯和功率定律尺寸分布函数的组合，该功能可提供有关四个不同物理过程的信息：（i）虹膜数据中的高斯随机噪声； （ii）过渡区域框架中的细微事件（由虹膜数据中的幂律大小分布描述）； （iii）盐和辣椒小规模的磁性结构（由HMI磁图中的随机噪声描述）； （iv）耀斑和纳米插曲中的磁重新连接过程（用HMI数据中的功率定律尺寸分布描述）。我们发现IRIS和HMI数据之间存在很高的相关性（CCC = 0.90）。通常发现具有磁通量平衡的数据集与SOC预测的功率定律斜率A_F = 1.80（对于平均通量F）相匹配，但是由于HMI视野的任意选择，出现了例外。匹配案例证实了SOC-助力通量尺寸分布的普遍性，并与Parnell等人（2009），A_F = 1.85 +/- 0.14的结果一致。
We compare the size distributions of self-organized criticality (SOC) systems in the solar photosphere and the transition region, using magnetogram data from Helioseismic and Magnetic Imager (HMI) and Interface Region Imaging Spectrograph (IRIS)} data. For each dataset we fit a combination of a Gaussian and a power law size distribution function, which yields information on four different physical processes: (i) Gaussian random noise in IRIS data; (ii) spicular events in the plages of the transition region (described by power law size distribution in IRIS data); (iii) salt-and-pepper small-scale magnetic structures (described by the random noise in HMI magnetograms); and (iv) magnetic reconnection processes in flares and nanoflares (described by power law size distributions in HMI data). We find a high correlation (CCC=0.90) between IRIS and HMI data. Datasets with magnetic flux balance are generally found to match the SOC-predicted power law slope a_F=1.80 (for mean fluxes F), but exceptions occur due to arbitrary choices of the HMI field-of-view. The matching cases confirm the universality of SOC-inferred flux size distributions, and agree with the results of Parnell et al.~(2009), a_F=1.85 +/- 0.14.
