arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.4245astro-ph.SR
收藏

耀斑带分离和能量释放的自动测定技术

A Technique for Automated Determination of Flare-ribbon Separation and Energy Release

R. A. Maurya, A. Ambastha

摘要:

本文介绍了一种自动测定耀斑带分离和双带耀斑过程中释放能量的方法。我们用色球H $α$滤波图和光球视线磁图分别分析了耀斑带分离和磁场结构。首先对耀斑带进行增强处理,然后采用“区域生长”技术提取耀斑带,一个形态学算子来帮助解决耀斑带。然后,使用在交互式数据语言(IDL \tm)平台上实现的自动技术,从磁极性反转线估计耀斑带的分离。最后,利用光球磁场数据和色球H $α$耀斑带的相应分离计算了耀斑能量释放率。该方法可以应用于测量任何感兴趣特征的运动(例如,强度、磁场、多普勒)。

英文摘要:

We present a technique for automatic determination of flare-ribbon separation and the energy released during the course of two-ribbon flares. We have used chromospheric H$α$ filtergrams and photospheric line-of-sight magnetograms to analyse flare-ribbon separation and magnetic-field structures, respectively. Flare-ribbons were first enhanced and then extracted by the technique of "region growing", i.e., a morphological operator to help resolve the flare-ribbons. Separation of flare-ribbons was then estimated from magnetic polarity reversal line using an automatic technique implemented into Interactive Data Language (IDL\tm) platform. Finally, the rate of flare-energy release was calculated using photospheric magnetic-field data and the corresponding separation of the chromospheric H$α$ flare-ribbons. This method could be applied to measure the motion of any feature of interest (e.g., intensity, magnetic, Doppler) from a given point of reference.

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。

↑