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Historical Auroras in the 990s: Evidence for Great Magnetic Storms

机译:九十年代的历史极光:大磁暴的证据

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摘要

Recently, a significant carbon-14 enhancement in the year 994 in tree ringshas been found, suggesting an extremely large cosmic ray flux event during ashort period. The origin of this particular cosmic ray event has not beenconfirmed, but one possibility is that it is of solar origin. Contemporaryhistorical records of low latitude auroras can be used as supporting evidencefor intense solar activity around that time. We investigated the previouslyreported as well as the new records found in contemporary observations from the990s to determine potential auroras. Records of potential red auroras in thelate 992 and early 993 were found around the world, i.e. in the KoreanPeninsula, Germany, and the Island of Ireland, suggesting the occurrence of anintense geomagnetic storm driven by solar activity.
机译:最近,在树铃树中的994年发现了碳14的显着增加,表明在短时间内发生了极大的宇宙射线通量事件。这个特殊的宇宙射线事件的起源尚未得到证实,但一种可能性是它是太阳起源的。低纬度极光的当代历史记录可作为当时强烈太阳活动的佐证。我们调查了从990年代现代观测中发现的先前报道的以及新的记录,以确定潜在的极光。在世界范围内(即在朝鲜半岛,德国和爱尔兰岛)发现了992年代末和993年代初潜在的红色极光的记录,这表明发生了由太阳活动驱动的强烈地磁风暴。

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