The Lyman-alpha (Lyα) line of neutral hydrogen at 121.6 nm is by far the brightest emission line in the vacuum ultraviolet spectral range of the Sun. The emission at this line could be a major energy input to the upper layers of the Earth’s atmosphere, strongly impacting the geospace environment. The Geostationary Operational Environmental Satellite (GOES) series, starting with GOES-13, began to carry a multichannel Extreme UltraViolet Sensor (EUVS) with one channel (E-channel) targeting the Lyα line. In the present work, we produce a Lyα flare catalog from the GOES-15/EUVS-E data between 2010 April 8 and 2016 June 6 with an automatic flare detection algorithm. This algorithm is designed to search events at various scales and find their real start and end times. Based on the obtained flare list, statistics on the temporal behavior such as the duration, rise, and decay times, and the event asymmetries of Lyα flares is presented. On average (defined by the median of the distributions), the duration, rise and decay times of the flares were estimated to be 20.8 minutes, 5.6 minutes, and 14.2 minutes, respectively. We also discuss the frequency distributions of the peak flux and the fluence of Lyα flares, both of which reveal power-law behaviors with power-law indices of 2.71 0.06 and 2.42 0.06, respectively, implying that more flares are accumulated at small scales and these small-scale events play an important role in explaining the violent solar energy release.

121.6 nm 处的中性氢的 Lyman-alpha (Ly α ) 谱线是迄今为止太阳真空紫外光谱范围内最亮的发射谱线。这条线上的发射可能是地球大气层上层的主要能量输入，对地球空间环境产生强烈影响。地球同步运行环境卫星（GOES）系列，从 GOES-13 开始，开始搭载多通道极紫外传感器（EUVS），单通道（E 通道）瞄准 Ly α线。在目前的工作中，我们产生了一个 Ly α使用自动耀斑检测算法从 2010 年 4 月 8 日至 2016 年 6 月 6 日期间 GOES-15/EUVS-E 数据的耀斑目录。该算法旨在搜索各种规模的事件并找到它们的真实开始和结束时间。基于所获得的耀斑列表上，例如持续时间，上升，和衰减时间，和Ly的事件不对称上的时间行为统计α耀斑被呈现。平均而言（由分布的中位数定义），耀斑的持续时间、上升时间和衰减时间分别估计为 20.8 分钟、5.6 分钟和 14.2 分钟。我们还讨论了峰值通量的频率分布和 Ly α的注量 耀斑的幂律指数分别为 2.71 0.06 和 2.42 0.06，表明更多的耀斑在小尺度上积累，这些小尺度事件在解释剧烈的太阳能释放方面起着重要作用.