题目：Post Flare Giant Arches and Run-Away Reconnection

　　报告人：Matthew WEST, Daniel SEATON, Sabrina SAVAGE, Paul BRYANS

        　　Royal Observatory of Belgium

　　摘要：The nature of post-flare giant arches and their relation to regular post flare loops has long been debated, especially in the context of how post-flare giant arches can sustain their growth for such long periods. In this presentation we discuss how magnetic reconnection can be sustained to such great heights, and the role the background corona plays in maintaining this growth. We use observations from 14 October 2014, when the SWAP EUV solar telescope on-board the PROBA2 spacecraft observed an eruption that led to the formation of perhaps the largest post-eruptive loop system seen in the solar corona in solar cycle 24. These loops grew to a height of approximately 400000 km (>0.5 solar-radii). We provide evidence of on-going reconnection, through observations spanning from the chromosphere to the middle corona, and discuss how only certain conditions can maintain prolonged growth.

　　报告时间：2016年8月9日（星期二）上午10：30

　　报告地点：紫台办公大楼517会议室

欢迎大家积极参加！

　　                                              紫金山天文台学术委员会