The formation of a perturbed zone and shock wave excited by a coronal mass ejection

Details The formation of a perturbed zone and shock wave excited by a coronal mass ejection The formation of a perturbed zone and shock wave excited by a coronal mass ejection

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009arep...53..173e&link_type=abstract

Astronomy Reports, Volume 53, Issue 2, pp.173-185

Astronomy and Astrophysics

Astronomy

1

96.60.Ph, 96.50.Ci

Scientific paper

The existence of perturbed zones ahead of coronal mass ejections (CMEs) has been confirmed, and their evolution with increasing CME velocity studied. At CME velocities that are close to or higher than the local Alfvén velocity, a discontinuity forms in the plasma density distribution ahead of the perturbed zone, which can be interpreted as a shock. Estimates testify that, at distances from the solar center of R < (15-20) R &sun;, the width of the observed shock front is probably of the order of the mean free path for proton-proton collisions.

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