We present the results of a search for stellar flares from stars neighbouring the target sources in the Kepler short cadence data. These flares have been discarded as contaminants in previous surveys and therefore provide an unexplored resource of flare events, in particular high-energy events from faint stars. We have measured M dwarf flare energies up to 1.5 × 1035 erg, pushing the limit for flare energies measured using Kepler data. We have used our sample to study the flaring activity of wide binaries, finding that the lower mass counterpart in a wide binary flares more often at a given energy. Of the 4430 flares detected in our original search, 298 came from a neighbouring star, a rate of 6.7 ± 0.4 per cent for the Kepler short cadence light curves. We have used our sample to estimate a 5.8 ± 0.1 per cent rate of false positive flare events in studies using Transiting Exoplanet Survey Satellite short cadence data.

中文翻译：

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开普勒短节奏观测中来自混合恒星和相邻恒星的恒星耀斑

我们展示了在开普勒短节奏数据中从邻近目标源的恒星中搜索恒星耀斑的结果。这些耀斑在之前的调查中作为污染物被丢弃，因此提供了未开发的耀斑事件资源，特别是来自微弱恒星的高能事件。我们测量了高达 1.5 × 1035 erg 的 M 矮星耀斑能量，推动了使用开普勒数据测量的耀斑能量的极限。我们使用我们的样本来研究宽双星的耀斑活动，发现宽双星中质量较低的对应物在给定能量下更频繁地耀斑。在我们最初的搜索中检测到的 4430 个耀斑中，有 298 个来自邻近的恒星，开普勒短节奏光曲线的比率为 6.7 ± 0.4%。我们使用我们的样本来估计 5.8 ± 0。