Conductive flux in the chromosphere derived from line linear polarization observation

Details Conductive flux in the chromosphere derived from line linear polarization observation Conductive flux in the chromosphere derived from line linear polarization observation

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...86..115h&link_type=abstract

(Japan Society for the Promotion of Science and National Science Foundation, U.S.-Japan Seminar on the Recent Advances in the Un

Physics

3

Chromosphere, Conductive Heat Transfer, Linear Polarization, Solar Electrons, Solar Flares, Solar Spectra, Electron Impact, Electron Trajectories, H Alpha Line, Plasma Heating, Solar Atmosphere, Solar Temperature

Scientific paper

It is shown that quantitative information on the mechanisms of energy transport which take place in solar flares can be obtained by measurement of impact line polarization. Linear polarization in two chromospheric lines (H-alpha and SI 1437 A) observed in the gradual phase of solar flares was investigated. The polarized electric vector is shown to be directed towards the center of the disk. The relationship between conductive heat flux and linear line polarization is determined using a function which represents the velocity distribution of electrons carrying heat flux. The relationship between linear polarization and heat flux is applied to the observed degree of polarization, which yields the conductive heat flux in the high chromosphere. It is determined that this conductive flux is of the order of magnitude of the total radiation loss in the chromosphere and below, which is also of the order of magnitude of the conductive flux in the transition zone.

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