The SDO/EVE Solar Irradiance Coronal Dimming Index Catalog. I. Methods and Algorithms
The SDO/EVE Solar Irradiance Coronal Dimming Index Catalog. I. Methods and Algorithms
复制标题
DOI：
10.3847/1538-4365/ab380e
复制
发表时间：
2019-09
期刊：
影响因子：
--
通讯作者：
J. Mason;R. Attié;C. Arge;B. Thompson;T. Woods
中科院分区：
文献类型：
--
作者：
J. Mason;R. Attié;C. Arge;B. Thompson;T. Woods
当日冕物质抛射离开时，它会留下一个暂时的空白。这种空洞被称为日冕变暗，它包含了导致它的物质喷射的信息。其他物理过程也可能导致日冕的部分区域出现短暂的变暗，但物质喷射特别有趣，因为它们会影响太空天气。先前的工作已经确定，即使在盘集成辐照度观测中也可以检测到暗化，即，太阳作为恒星的测量。目前的工作评估了四年的连续太阳动力学天文台极紫外线实验（EVE）观测，大大扩大了我们可以检测和表征的调光的数量，并将这些信息收集到詹姆斯的EVE调光指数目录中。本文详细介绍了用于生成目录的算法，提供了统计数据，并将其与以前的工作进行了比较。该目录包含5051个潜在事件（行），对应于这段时间内由> C1耀斑定义的所有稳健检测到的太阳爆发事件。每一行都有对应的27，349个元数据和参数化元素（列）。总的来说，这个目录是分析760万个太阳紫外光曲线的结果。
When a coronal mass ejection departs, it leaves behind a temporary void. That void is known as coronal dimming, and it contains information about the mass ejection that caused it. Other physical processes can cause parts of the corona to have transient dimmings, but mass ejections are particularly interesting because of their influence in space weather. Prior work has established that dimmings are detectable even in disk-integrated irradiance observations, i.e., Sun-as-a-star measurements. The present work evaluates four years of continuous Solar Dynamics Observatory Extreme Ultraviolet Experiment (EVE) observations to greatly expand the number of dimmings we may detect and characterize, and collects that information into James’s EVE Dimming Index catalog. This paper details the algorithms used to produce the catalog, provides statistics on it, and compares it with prior work. The catalog contains 5051 potential events (rows), which correspond to all robustly detected solar eruptive events in this time period as defined by >C1 flares. Each row has a corresponding 27,349 elements of metadata and parameterizations (columns). In total, this catalog is the result of analyzing 7.6 million solar ultraviolet light curves.