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On the Origins of Solar Metric Type II Bursts
Edward W. Cliver
Various possibilities have been raised for the root cause of coronal type
II bursts. One long-standing suggestion is that metric type IIs are
flare blast waves resulting from explosive heating of the corona.
Candidate driver gases for metric IIs include coronal mass ejections (CMEs)
or the higher density cores of CMEs such as prominence eruptions or sprays.
A related question concerns the relationship of interplanetary/kilometric
type II shocks (generally thought to be driven by CMEs) to the coronal/metric
type II shocks. Within the past year several papers have addressed
these issues. I review these studies and present an analysis of type
II bursts and CMEs observed during the first 18 months of the SOHO mission.
Organization: Air Force Research Laboratory
Address: Hanscom AFB, MA 01731-3010
Above is background material for archival reference only.