Imaging Observations of a Very High Frequency Type II Burst

Details Imaging Observations of a Very High Frequency Type II Burst Imaging Observations of a Very High Frequency Type II Burst

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsh24a..05w&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH24A-05

Physics

7534 Radio Emissions

Scientific paper

A remarkable Type II burst was detected by the high-frequency system of the Green Bank Solar Radio Burst Spectrometer on 2005 November 14. The harmonic branch of the Type II extended up to 800 MHz, making it one of the highest frequency Type II bursts ever detected, but it failed to propagate to heights corresponding to frequencies below 100 MHz. At such high frequencies, it implies the formation of a shock relatively low in the corona. No coronal mass ejection was evident in the LASCO data for this east limb event. It is one of the few Type II bursts to be observable at every frequency of observation of the Nancay Radio Heliograph (164-432 MHz). Here we present analysis of images of the event, including simultaneous imaging of the fundamental and harmonic branches.

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