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Solar Physics

, Volume 150, Issue 1–2, pp 317–323 | Cite as

Non-radial magnetic field structures in the solar corona

  • N. Gopalswamy
  • M. R. Kundu
  • A. Raoult
  • M. Pick
Article

Abstract

We report on the structure and geometry of coronal magnetic fields inferred from the observations of meter-decimeter type III and moving type IV radio bursts, associated with a Hα flare. This is the first report of type III radio bursts from the Nançay radioheliograph after it acquired the two-dimensional multifrequency capability. Dispersion of the radio source positions with frequency suggests that open and closed field lines are considerably inclined to the radial direction which is consistent with the connectivity observed in the magnetogram. We suggest that multiple arch systems are involved in the type IV emission. From the polarization and dispersion characteristics of the type IV source, we infer that the emission is due to fundamental plasma emission.

Keywords

Flare Solar Phys Solar Corona Radio Burst Coronal Magnetic Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • N. Gopalswamy
    • 1
  • M. R. Kundu
    • 1
  • A. Raoult
    • 2
  • M. Pick
    • 2
  1. 1.Department of AstronomyUniversity of MarylandCollege ParkUSA
  2. 2.Observatoire de Paris, Section de MeudonMeudon Principal CedexFrance

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