Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2011-04-18
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
30 pages, 15 figures. Solar Physics, published online. The final publication is available at http://www.springerlink.com
Scientific paper
10.1007/s11207-011-9780-z
We show examples of excitation of coronal waves by flare-related abrupt eruptions of magnetic rope structures. The waves presumably rapidly steepened into shocks and freely propagated afterwards like decelerating blast waves that showed up as Moreton waves and EUV waves. We propose a simple quantitative description for such shock waves to reconcile their observed propagation with drift rates of metric type II bursts and kinematics of leading edges of coronal mass ejections (CMEs). Taking account of different plasma density falloffs for propagation of a wave up and along the solar surface, we demonstrate a close correspondence between drift rates of type II bursts and speeds of EUV waves, Moreton waves, and CMEs observed in a few known events.
Afanasyev An. N.
Chertok I. M.
Grechnev Victor V.
Kalashnikov S. S.
Kubo Yoshio
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