Time and Space Distribution of Discrete Energetic Releases in Millimeter-Wave Solar Bursts

Details Time and Space Distribution of Discrete Energetic Releases in Millimeter-Wave Solar Bursts Time and Space Distribution of Discrete Energetic Releases in Millimeter-Wave Solar Bursts

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...498l.173r&link_type=abstract

Astrophysical Journal Letters v.498, p.L173

Astronomy and Astrophysics

Astronomy

14

Sun: Flares, Sun: Radio Radiation

Scientific paper

Observations of solar bursts using the multiple-beam technique define unambiguously the fast time structures present in the flux time profiles, providing, at the same time, their spatial positions. A method was developed to identify these structures and was used in the analysis of two solar events observed at 48 GHz. The bursts' energy content at different time intervals was found to be directly proportional to the number of structures in the same intervals, confirming earlier findings that the microwave burst emission is quantized in energy. The discrete structures are found to be spatially scattered, exhibiting angular separations of up to 25". The results favor models of plasma instabilities that produce multiple discrete elementary energy injections scattered in space and time.

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