Observed polarization of the Fe XIV 5303 coronal emission line

Details Observed polarization of the Fe XIV 5303 coronal emission line Observed polarization of the Fe XIV 5303 coronal emission line

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...112..350a&link_type=abstract

Astronomy and Astrophysics, vol. 112, no. 2, Aug. 1982, p. 350-354.

Astronomy and Astrophysics

Astrophysics

21

Emission Spectra, Polarization Characteristics, Solar Corona, Solar Spectra, Coronagraphs, Depolarization, Forbidden Bands, Iron, Polarimetry, Polarized Light, Solar Magnetic Field

Scientific paper

The polarization of the Fe XIV 5303 A line has been observed between 1.1 and 2.0 solar radii from disk center at Pic-du-Midi during 1977-1980. The polarization direction is found to be mainly radial. The average polarization degree is 1.6%. This low polarization may be due to a significant contribution of collisional excitation to the radiation in the denser coronal structures, as well as to magnetic depolarization when the magnetic field is not in the radial direction. The average values of polarization and intensity agree well with a strongly (but realistically) inhomogeneous density model of the corona.

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