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Ellerman bomb
A small, bright structure, also known as a moustache, that appears in a solar active region, most often in an emerging flux region or on the edge of a sunspot where the magnetic field is breaking through the surface. Ellerman bombs usually last less than 5 minutes and are best seen it the wings of H-alpha; they are named after the American astronomer Ferdinand Ellerman (1869-1940).
Related category
• SOLAR TOPICS
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