Effect of polarized radiative transfer on the Hanle magnetic field determination in prominences: Analysis of hydrogen H alpha line observations at Pic-du-Midi

Details Effect of polarized radiative transfer on the Hanle magnetic field determination in prominences: Analysis of hydrogen H alpha line observations at Pic-du-Midi Effect of polarized radiative transfer on the Hanle magnetic field determination in prominences: Analysis of hydrogen H alpha line observations at Pic-du-Midi

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985svmf.nasa..335b&link_type=abstract

In NASA. Marshall Space Flight Center Meas. of Solar Vector Magnetic Fields p 335-340 (SEE N85-29869 18-92)

Mathematics

3

Alpha Particles, Hydrogen, Line Spectra, Polarized Radiation, Radiative Transfer, Solar Magnetic Field, Coronagraphs, Polarimeters, Solar Prominences, Vectors (Mathematics)

Scientific paper

The linear polarization of the Hydrogen H alpha line of prominences has been computed, taking into account the effect of a magnetic field (Hanle effect), of the radiative transfer in the prominence, and of the depolarization due to collisions with the surrounding electrons and protons. The corresponding formalisms are developed in a forthcoming series of papers. In this paper, the main features of the computation method are summarized. The results of computation have been used for interpretation in terms of magnetic field vector measurements from H alpha polarimetric observations in prominences performed at Pic-du-Midi coronagraph-polarimeter. Simultaneous observations in one optically thin line (He I D(3)) and one optically thick line (H alpha) give an opportunity for solving the ambiguity on the field vector determination.

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