Mean properties of the polarization of the Fe XIII 10747 A coronal emission line

Details Mean properties of the polarization of the Fe XIII 10747 A coronal emission line Mean properties of the polarization of the Fe XIII 10747 A coronal emission line

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...178..263a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 178, no. 1-2, May 1987, p. 263-268.

Astronomy and Astrophysics

Astrophysics

26

Emission Spectra, Iron, Line Spectra, Polarization Characteristics, Solar Corona, Density Distribution, Solar Cycles, Solar Magnetic Field, Vertical Distribution

Scientific paper

Several average properties of the Fe XIII 10,747 A line observed with a coronal emission-line polarimeter are summarized and compared with other observations and with theory. The mean polarization direction is found to be radial, while the average polarization rate is below that predicted by standard theoretical models by a factor of about three. This lower value is consistent with models which take into account the depolarization produced by density inhomogeneities and actual fluctuation in magnetic-field direction. The observed large-scale organization of the polarization clearly reveals the existence of the large-scale structure of the coronal magnetic field.

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