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Slowly Varying Component of Radio Emission from TVLM 513-46546 and Continuous Sources of High Energy Electrons in the Coronae of UltraCool Stars

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Abstract

It is shown that a source generating a slowly varying or quiet component of radio emission from ultracool stars such as the brown dwarf TVLM 513-46546 can be the gyrosynchroton radiation from the magnetic loops system distributed quasi-uniformly over the star’s surface. Such a model explains the low modulation of the flux and makes it possible to understand the pumping mechanism of magnetic loops by high energy electrons. The main parameters of magnetic loops and which part of the star’s surface is the emission source are determined using the information on microwave radiation from the brown dwarf TVLM 513-46546.

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ACKNOWLEDGMENTS

The work was supported by the Russian Academy of Sciences, program no. 28, “Space: Fundamental Processes and their Interconnections,” by the Russian Science Foundation, project no. 16-12-10448 (chapters 1, 2), no. 16-12-10528 (chapter 3), by the Russian Foundation for Basic Research, project no. 17-02-00091a (chapter 4), and by a state contract, project no. 0035-2014-0029.

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Authors and Affiliations

  1. Institute of Applied Physics, Russian Academy of Sciences, Nizhniy Novgorod, Russia

    V. V. Zaitsev

  2. Central Astronomical Observatory, Russian Academy of Sciences, Pulkovo, St. Petersburg, Russia

    A. V. Stepanov

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  1. V. V. Zaitsev
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  2. A. V. Stepanov
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Correspondence to V. V. Zaitsev or A. V. Stepanov.

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Translated by Yu. Zikeeva

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Zaitsev, V.V., Stepanov, A.V. Slowly Varying Component of Radio Emission from TVLM 513-46546 and Continuous Sources of High Energy Electrons in the Coronae of UltraCool Stars. Geomagn. Aeron. 58, 1144–1148 (2018). https://doi.org/10.1134/S0016793218080212

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  • DOI: https://doi.org/10.1134/S0016793218080212

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