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On the polarization and anisotropy of solar X-radiation during flares

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Abstract

Starting from the idea that the electrons accelerated during a solar flare have originally a preferred direction, the angular distribution and the polarization of bremsstrahlung below 10 Å is calculated taking into account the influence of the magnetic field. The energy distribution of the nonthermal electrons is based on X-ray spectra measured by the Leicester group during flares in 1962 and 1967. In addition to the case of a fixed angle α between the electron velocity and the magnetic field, an angular distribution of the form sinnα is considered. The results may be used to test flare models. Recent measurements of the polarization of solar X-radiation yield the expected order of magnitude.

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Authors and Affiliations

  1. Lehrstuhl für Theoretische Astrophysik der Universität Tübingen, Tübingen, Germany

    Gerhard Elwert & Eberhard Haug

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  1. Gerhard Elwert
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  2. Eberhard Haug
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Paper presented to the Int. Symp. on Solar-Terr. Phys., Leningrad, May 1970.

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Elwert, G., Haug, E. On the polarization and anisotropy of solar X-radiation during flares. Sol Phys 15, 234–248 (1970). https://doi.org/10.1007/BF00149488

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  • DOI: https://doi.org/10.1007/BF00149488

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