Naslov
Understanding the Physical Nature of Coronal "EIT Waves"

Autori
Long, David M. ; Bloomfield, D. Shaun ; Chen, P. F. ; Downs, Cooper ; Gallagher, Peter T. ; Kwon, Ryun Young ; Vanninathan, Kamalam ; Veronig, Astrid M. ; Vourlidas, Angelos ; Vršnak, Bojan ; Warmuth, Alexander ; Žic, Tomislav

Izvornik
Solar physics (0038-0938) 292 (2017), 1; UNSP 7-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Coronal mass ejections ; low coronal signatures ; Waves ; magnetohydrodynamic ; Waves ; propagation ; Waves ; shock

Sažetak
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 agree 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 data with higher spatial and temporal resolution 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 the so-called EIT waves are best described as fast-mode large-amplitude waves or shocks that are initially driven by the impulsive expansion of an erupting coronal mass ejection in the low corona.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA