EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR FLARES
A sudden and violent release of matter and energy within a solar activity
region in the form of electromagnetic radiation, energetic particles, shock
waves, lasting a few minutes to hours. Solar flares accelerate charged
particles into interplanetary space.
the Cambridge Encyclopedia of the Sun, The Cambridge University Press,
Cambridge, CB2, 2RU, UK, 2001. (Excerpted)