Understanding the physical nature of coronal "EIT waves"

Long, David, Bloomfield, Shaun, Chen, P. F., Downs, Cooper, Gallagher, Peter, Kwon, Ryun, Vanninathan, K., Veronig, A. M., Vourlidas, Angelos, Vršnak, Bojan, Warmuth, A. and Žic, T. (2017) Understanding the physical nature of coronal "EIT waves". Solar Physics, 292 (1). p. 7. ISSN 0038-0938

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Official URL: http://dx.doi.org/10.1007/s11207-016-1030-y

Abstract

For almost 20 years the physical nature of globally propagating waves in the solar corona (commonly called "EIT waves") has been controversial and subject to debate. Additional theories have been proposed over the years to explain observations that did not fit with the originally proposed fast-mode wave interpretation. However, the incompatibility of observations made using the Extreme-ultraviolet Imaging Telescope (EIT) onboard the Solar and Heliospheric Observatory with the fast-mode wave interpretation was challenged by differing viewpoints from the twin Solar Terrestrial Relations Observatory spacecraft and higher spatial/temporal resolution data from the Solar Dynamics Observatory.
In this article, we reexamine the theories proposed to explain "EIT waves" to identify measurable properties and behaviours that can be compared to current and future observations. Most of us conclude that "EIT waves" are best described as fast-mode large-amplitude waves/shocks that are initially driven by the impulsive expansion of an erupting coronal mass ejection in the low corona.

Item Type: Article
Uncontrolled Keywords: coronal mass ejections, low coronal signatures, waves, magnetohydrodynamic Waves, Propagation; Waves, Shock
Subjects: F300 Physics
F500 Astronomy
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 06 Dec 2016 10:04
Last Modified: 11 Dec 2017 09:50
URI: http://nrl.northumbria.ac.uk/id/eprint/28790

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