Abstract
Auroral arcs are a visible manifestation of space weather. A common dynamic observed during geomagnetically disturbed periods is the breakup of auroral arcs into a multitude of small‐scale filaments less than 1 kilometer across. These filaments can move rapidly upward along the geomagnetic field lines. Dahlgren et al. observed such “auroral flames” during a breakup event on 1 March 2011 using an advanced high‐speed optical system with sensitive low‐light detectors. The data provide new insight into the energy and flux of electrons in individual auroral flames and could help scientists better understand the dynamic processes involved in auroral breakup.
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