用XRT作为多股环模拟活动区瞬态增亮
Modeling Active Region Transient Brightenings Observed with XRT as Multi-Stranded Loops
摘要：
强有力的证据表明，在EUV和软X射线中观察到的日冕环可能不是单一的各向同性结构，但通常可以更准确地建模为独立束。在这个框架内模拟所观察到的活动区瞬态增亮（ARTBs）允许探索这些分层结构的能量分支和特性。在这里，我们提出了一个简单的方法，检测和建模ARTB观察与日野/X射线望远镜（XRT）作为组的0维股，这使我们能够探测参数空间，以更好地了解脉冲加热循环中的股加热的空间和时间依赖性。这种部分自动化的方法可用于分析大量的观测数据，以获得对日冕结构参数的统计洞察，包括给定模型中所需的加热事件数量，以拟合观测数据。在这篇文章中，我们提出的方法，并证明其使用在检测和建模ARTB的样本数据集从Hinode/XRT。这些初步结果表明，在一般情况下，多个加热事件是必要的复制观察到的ARTB，但这些加热事件的空间依赖性还不能建立。
英文摘要：
Strong evidence exists that coronal loops as observed in EUV and soft X-rays may not be monolithic isotropic structures, but can often be more accurately modeled as bundles of independent strands. Modeling the observed active region transient brightenings (ARTBs) within this framework allows exploration of the energetic ramifications and characteristics of these stratified structures. Here we present a simple method of detecting and modeling ARTBs observed with the Hinode/X-Ray Telescope (XRT) as groups of 0-dimensional strands, which allows us to probe parameter space to understand better the spatial and temporal dependence of strand heating in impulsively heated loops. This partially automated method can be used to analyze a large number of observations to gain a statistical insight into the parameters of coronal structures including the number of heating events required in a given model to fit the observations. In this article we present the methodology, and demonstrate its use in detecting and modeling ARTBs in a sample data set from Hinode/XRT. These initial results show that in general, multiple heating events are necessary to reproduce observed ARTBs, but the spatial dependence of these heating events could not yet be established.
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