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Large-scale Globally Propagating Coronal Waves View all abstracts by submitter

Alexander Warmuth   Submitted: 2015-10-01 01:01

Large-scale, globally propagating wave-like disturbances have been observed in the solar chromosphere and by inference in the corona since the 1960s. However, detailed analysis of these phenomena has only been conducted since the late 1990s. This was prompted by the availability of high-cadence coronal imaging data from numerous spaced-based instruments, which routinely show spectacular globally propagating bright fronts. Coronal waves, as these perturbations are usually referred to, have now been observed in a wide range of spectral channels, yielding a wealth of information. Many findings have supported the "classical" interpretation of the disturbances: fast-mode MHD waves or shocks that are propagating in the solar corona. However, observations that seemed inconsistent with this picture have stimulated the development of alternative models in which "pseudo waves" are generated by magnetic reconfiguration in the framework of an expanding coronal mass ejection. This has resulted in a vigorous debate on the physical nature of these disturbances. This review focuses on demonstrating how the numerous observational findings of the last one and a half decades can be used to constrain our models of large-scale coronal waves, and how a coherent physical understanding of these disturbances is finally emerging.

Authors: Alexander Warmuth
Projects: None

Publication Status: Living Reviews in Solar Physics, vol. 12, no. 3
Last Modified: 2015-10-07 12:57
Go to main E-Print page  2D MHD and 1D HD models of a solar flare - a comprehensive comparison of the results  The appearance, motion, and disappearance of three-dimensional magnetic null points  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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