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Strongly Beamed, Polarized Radio Emission from CU Virginis

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Abstract

We propose the plasma mechanism of generation of the strongly beamed, fully polarized radio emission from a chemically peculiar star CU Vir observed with VLA at 1.4 GHz in June 2, 6, and 9, 1998. The radio emission arises from the Rayleigh scattering of longitudinal waves excited near the upper-hybrid resonance due to the loss-cone instability on suprathermal electrons in the magnetosphere of CU Vir. It is shown that the nonlinear stimulated scattering of upper-hybrid waves and the regular refraction of radiowaves in the stellar corona are the main factors forming the angular pattern of the radio emission. As the result, the angular pattern of the radiation of CU Vir narrows to 3°-10°.

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  1. Main Astrophysical Observatory of the Russian Academy of Sciences, St.Petersburg, Russia

    E. H. Koupriyanova & A. V. Stepanov

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  1. E. H. Koupriyanova
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  2. A. V. Stepanov
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Koupriyanova, E.H., Stepanov, A.V. Strongly Beamed, Polarized Radio Emission from CU Virginis. Radiophysics and Quantum Electronics 44, 726–732 (2001). https://doi.org/10.1023/A:1013015227126

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