Observational Characteristics of Multi-Wavelength Radio Emissions Associated with Different Velocities of Solar Coronal Mass Ejection

Details Observational Characteristics of Multi-Wavelength Radio Emissions Associated with Different Velocities of Solar Coronal Mass Ejection Observational Characteristics of Multi-Wavelength Radio Emissions Associated with Different Velocities of Solar Coronal Mass Ejection

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pnaoc...5...13x&link_type=abstract

Astronomical Research and Technology. Publications of National Astronomical Observatories of China (ISSN 1672-7673), Vol. 5, No.

Astronomy and Astrophysics

Astronomy

Solar Coronal Mass Ejections, Sun, Radio Bursts, Magnetic Structures

Scientific paper

12 Solar Coronal Mass Ejection (CME) events are compared. It is found that 6, out of 12 events, are fast ( > 1000 km/s) CMEs and 6 are slow (<= 800 km/s) CMEs. In particular, it is found that the two types of CMEs are corresponding to the different types of multi-wavelength radio emissions, and to the different coronal magnetic configurations, respectively. In this paper, the producing processes of radio bursts with different types are analyzed qualitatively. The multi-polar and bi-polar magnetic structures are indicated, and they are likely to be the causes producing the two types of CMEs and the different types of multi-wavelength radio burst, respectively. The correlation between the "magnetic breakout" model for CME initiation/flare triggering and the multi-polar magnetic structure is concerned. The different velocities of CMEs may be the key factor causing different types of multi-wavelength radio bursts, and the fast or slow CMEs may be attributed to the multi-polar or bi-polar coronal magnetic structures.

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