期刊
ASTROPHYSICAL JOURNAL
卷 544, 期 2, 页码 L157-L161出版社
IOP PUBLISHING LTD
DOI: 10.1086/317310
关键词
Sun : activity; Sun : atmosphere; Sun : UV radiation
We present the first high-cadence time profiles of Ellerman bombs (EBs) at two wavelengths, 1.3 Angstrom in the blue wing of the Hot line and the UV continuum at 1600 Angstrom, and study their temporal correlation. Our results demonstrate that 46 out of 75 EBs exhibit a good correlation at the two wavelengths with a correlation coefficient greater than 50%, suggesting that a common energy release produces emission at the two wavelengths. We also find that the EBs with strong Hot emission tend to show a good H alpha -UV correlation but that the weakly correlated or noncorrelated EBs are usually weak in Hot emission. More than half of the H alpha -UV well-correlated EBs are located at the boundaries of unipolar magnetic areas; the others are located at, or close to, the magnetic inversion lines. However, the majority of the weakly or noncorrelated EBs are located at the magnetic inversion lines. Our results suggest that the physical mechanisms and the energy distributions are quite different in different types of EBs and that heating in the photosphere and temperature minimum region is very important for producing EBs. The high-cadence observations of EBs also confirm unambiguously that the light curves of EBs generally demonstrate a fast rise and a fast decay, with an average e-fold rising/decaying time of about 1 minute, which distinguishes EBs from the flare phenomenon.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据