Coronal response to a solar event in a corona evacuated by a prior transient

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Computerized Simulation, Solar Activity Effects, Solar Corona, Solar Wind, Thermodynamics, Magnetic Field Configurations, Magnetohydrodynamics, Solar Flares, Solar Magnetic Field

Scientific paper

The pre-event corona is known to play an important role in determining the geometry and thermodynamics of the coronal response to a solar event. What is more, the disturbed corona after a solar event may be markedly different from the pre-event corona for several hours (or days). In the study described here, the numerically simulated coronal response to a solar event two hours after an identical solar event at the same location is compared to (1) the coronal response to just the first event and (2) the coronal response that would have existed if the second event had not occurred. It is shown that the second solar event does not produce a noticeable mass-ejection coronal transient and that the mass excess contours caused by the second event are similar to those that exist after relaxation of the corona following the first event when the second event does not occur.

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