Development of Coronal Mass Ejections: Radio Shock Signatures

Details Development of Coronal Mass Ejections: Radio Shock Signatures Development of Coronal Mass Ejections: Radio Shock Signatures

Jan 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...528l..49m&link_type=abstract

The Astrophysical Journal, Volume 528, Issue 1, pp. L49-L51.

Astronomy and Astrophysics

Astronomy

36

Sun: Activity, Sun: Corona, Sun: Radio Radiation

Scientific paper

We present observational imaging evidence for the existence of metric radio bursts closely associated with the front edge of coronal mass ejections (CMEs). These radio bursts drift in frequency similarly to type II bursts. They are weak and usually go undetected on spectrograph data. We find the same measured projected velocity for the displacement of, respectively, the radio source (when observed at two or more frequencies) and the CME leading edge. The position of the emitting source coincides with the CME leading edge. Among the events analyzed, the fastest of them, with a velocity over 1400 km s-1, was associated with interplanetary type II bursts.

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