Scientists used the Very Large Array (VLA) to study
bursts of radio waves that accompanied a solar flare in
2012. Solar flares are bright bursts of energy sometimes
accompanied by coronal mass ejections (CMEs), which
are eruptions of charged material from the Sun’s surface.
Scientists had theories about how flares could
accelerate the material from a CME, but supporting evidence
was scarce. The VLA revealed that the location of
radio bursts matches a predicted shock region where
electrons are whipped into speeds high enough to
cause the powerful energy release of a CME, matching
computer simulations.
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