Non-radial magnetic field structures in the solar corona

Details Non-radial magnetic field structures in the solar corona Non-radial magnetic field structures in the solar corona

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994soph..150..317g&link_type=abstract

Solar Physics, vol. 150, no. 1-2, p. 317-323

Astronomy and Astrophysics

Astronomy

10

Magnetic Field Configurations, Polarized Electromagnetic Radiation, Radio Astronomy, Radio Spectra, Solar Corona, Solar Electrons, Solar Magnetic Field, Solar Prominences, Type 3 Bursts, Type 4 Bursts, Centroids, Magnetic Signatures, Plasma Dynamics, Plasmas (Physics), Spectroheliographs

Scientific paper

We report on the structure and geometry of coronal magnetic fields inferred from the observations of meter-decimeter type 3 and moving type 4 radio bursts, associated with an H(alpha) flare. This is the first report of type 3 radio bursts from the Nancay 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 4 emission. From the polarization and dispersion characteristics of the type 4 source, we infer that the emission is due to fundamental plasma emission.

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