日冕物质抛射与太阳耀斑的时序关系分析

日冕物质抛射表现为在短时间内快速地由日冕向外抛射出大量等离子体物质,这些物质进入星际空间,特别是日地空间,会对日地空间的磁场分布造成影响。采用自1996年1月3日至2009年7月31日的太阳耀斑和日冕物质抛射的样本,对日冕物质抛射和耀斑的时序关系进行分时间窗口统计研究。结果表明对于耀斑而言,日冕物质抛射与其有密切的时序关系且耀斑级别越大时序关系越密切。而对于日冕物质抛射而言,耀斑与其没有密切的时序关系,这可能是所选取的样本中包含大量太阳背面日冕物质抛射所致。这一结论可以用于日冕物质抛射预报。

The Temporal Relationship between Coronal Mass Ejections and Solar Flares

The Coronal Mass Ejections (CMEs) are defined as ejecting large plasma rapidly from the solar surface in short time and these matter could lead to serials effection when they near to the solar-earth environment especially to the magnetic field of the solar-earth environment. We employ samples from the 3rd, January, 1996 to the 31st, July, 2009 to study the temporal relationship between CME and solar flare. It has been revealed that solar flares are temporally associated with CMEs, especially for major flares, while CMEs are not temporally associated with solar flares due to a large amount of farside CMEs including our statistic samples. Our results are beneficial to CME forecasts.