On the source conditions for herringbone structure in type II solar radio bursts

✍ Scribed by H. V. Cane; S. M. White

• Publisher: Springer
• Year: 1989
• Tongue: English
• Weight: 520 KB
• Volume: 120
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00148539

✦ Synopsis

We investigate the correlation of the occurrence of the herringbone phenomenon in type II solar radio bursts with various flare properties. We show that herringbone is strongly correlated with the intensity of the type II burst: whereas about 21% of all type II bursts show herringbone, about 60% of the most intense bursts contain herringbone. This fact can explain most of the correlations between herringbone and other properties such as intense type III bursts, type IV emission, and high type II starting frequencies. We also show that when this is taken into account, there is no need to postulate two classes of type II burst in order to explain why there appears to be a difference in herringbone occurrence between the set of type II bursts associated with the leading edges of coronal mass ejections, and those not so associated. We argue that the data are consistent with the idea that all coronal type II bursts are due to blast waves from flares.