Thermal and nonthermal emissions during a coronal mass ejection

Details Thermal and nonthermal emissions during a coronal mass ejection Thermal and nonthermal emissions during a coronal mass ejection

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993soph..143..327g&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 143, no. 2, p. 327-343.

Physics

20

Solar Corona, Solar Flares, Solar Physics, Solar Radio Emission, Stellar Mass Ejection, Thermal Emission, Particle Acceleration, Type 3 Bursts

Scientific paper

Observations were made of thermal and nonthermal radio emissions from a coronal mass ejection (CME) at meter-decameter wavelengths. The speed of the CME was found to be approximately 450 km/sec. It was possible to observe the thermal structure of the CME in radio due to the absence of nonthermal radio emission in the beginning of the event, and the weakness of the following event. Several minutes after the onset of the CME, type III bursts and a nonthermal continuum began. Radio and optical observations are used to show that the CME was not driven by the flare. The thermal structure and geometry of the mass ejection in radio is investigated and compared with the optical evidence. Lastly, a schematic model of the event is developed to show that particle acceleration high in the corona is possible.

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