Diagnostic of coronal magnetic fields from microwave polarization reversal

Details Diagnostic of coronal magnetic fields from microwave polarization reversal Diagnostic of coronal magnetic fields from microwave polarization reversal

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...112...52b&link_type=abstract

Astronomy and Astrophysics, vol. 112, no. 1, Aug. 1982, p. 52-60.

Astronomy and Astrophysics

Astronomy

39

Microwave Emission, Polarized Radiation, Solar Corona, Solar Magnetic Field, Astronomical Maps, Magnetic Dipoles, Photosphere, Propagation Modes, Radio Astronomy, Wave Propagation

Scientific paper

A method is proposed to determine constraints on magnetic fields (and densities) in coronal layers above solar active regions. The method is based on the interpretation of the radio emission as due to the interaction between wave modes (coupling). The first part of this paper is devoted to the study of mode coupling effects on the wave polarization. Then a theory is presented, that allows to deduce intrinsic physical quantities directly from radio maps during an observation of a polarization inversion. Unlike the standard methods, no assumption is needed on the emission mechanisms, and the information is 'local', i.e. not integrated along the line of sight.

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