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Flare Characteristics and Type III Bursts: A Statistical Approach

Published online by Cambridge University Press:  14 August 2015

C. Zanelli ,
P. Zlobec  and
U. Koren
C. Zanelli
Affiliation:
Osservatorio Astronomico, Trieste, Italy
P. Zlobec
Affiliation:
Osservatorio Astronomico, Trieste, Italy
U. Koren
Affiliation:
Osservatorio Astronomico, Trieste, Italy

Abstract

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An analysis has been carried of the correlation of the occurrence of type III bursts and flares in spotless regions (G-flares) or covering major sunspot umbrae (Z-flares) - i.e. in magnetic conditions presumably opposite - over the past 10 years. A very low correlation of the former flares (8%) and a higher than average value for the latter flares (36% against the normally accepted 25%) shows that the ambient magnetic field of the flaring region is a primary factor for type III burst emission. The presence of a surge and of a rapid brightness rise (“flash-phase”) are recognized to be other important, if secondary, factors for type III burst generation.

Type
Session VII - Solar Bursts - Radio, White Light and X-ray Observations
Information
Symposium - International Astronomical Union , Volume 86: Radio Physics of the Sun , 1980 , pp. 465 - 467
Copyright
Copyright © Reidel 1980 

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