Solar Physics

, Volume 111, Issue 2, pp 347–363 | Cite as

Imaging observations of the evolution of meter-decameter burst emission during a major flare

  • N. Gopalswamy
  • M. R. Kundu


We present the results of a study of the evolution of 3 February, 1986 flare at meter-decameter wavelengths using the two dimensional imaging observations made with the Clark Lake multifrequency radioheliograph. The flare was complex and produced various types of meter-decameter bursts. The preflare activity was observed in the form of type III bursts some tens of minutes prior to the impulsive onset. From the positional analysis of the preflare and impulsive phase type III bursts and other measured characteristics we discuss the characteristics of energy release and possible magnetic field configurations in the vicinity of energy release region. From positional and temporal studies of the flare continuum and type II burst in relation to the microwave and hard X-ray emissions, we discuss the possible magnetic field structures in which the accelerated particles are confined or along which they propagate. We develop a schematic model of the flaring region based upon our study.


Flare Energy Release Release Region Field Configuration Dimensional Imaging 
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Copyright information

© D. Reidel Publishing Company 1987

Authors and Affiliations

  • N. Gopalswamy
    • 1
  • M. R. Kundu
    • 1
  1. 1.Astronomy Program, University of MarylandCollege ParkUSA

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