Kinematical evidence for physically different classes of large-scale coronal EUV waves

E-ISSN： 1432-0746|532|issue|A151-A151

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.532, Iss.issue, 2011-08, pp. : A151-A151

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Abstract

Context. Large-scale wavelike disturbances have been observed in the solar corona in the EUV range since more than a decade. The physical nature of these so-called “EIT waves” is still being debated controversially. The two main contenders are on the one hand MHD waves and/or shocks, and on the other hand magnetic reconfiguration in the framework of an expanding CME. There is a lot of observational evidence backing either one or the other scenario, and no single model has been able to reproduce all observational constraints, which are partly even contradictory. This suggests that there may actually exist different classes of coronal waves that are caused by distinct physical processes. Then, the problems in interpreting coronal waves would be mainly caused by mixing together different physical processes.