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Features of the Flow Structure in the Vicinity of the Inner Lagrangian Point in Polars

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Abstract

The structures of plasma flows in close binary systems whose accretors have strong intrinsic magnetic fields are studied. A close binary system with the parameters of a typical polar is considered. The results of three-dimensional numerical simulations of the matter flow from the donor into the accretor Roche lobe are presented. Special attention is given to the flow structure in the vicinity of the inner Lagrangian point, where the accretion flow is formed. The interaction of the accretion-flow material from the donor’s envelope with the magnetic field of the accretor results in the formation of a hierarchical structure of the magnetosphere, because less dense areas of the accretion flow are stopped by the magnetic field of the white dwarf earlier than more dense regions. Taking into account this kind of magnetosphere structure can affect analysis results and interpretation of the observations.

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Authors and Affiliations

  1. Institute of Astronomy, Russian Academy of Sciences, Moscow, 119017, Russia

    P. B. Isakova, A. G. Zhilkin & D. V. Bisikalo

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  1. P. B. Isakova
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  2. A. G. Zhilkin
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  3. D. V. Bisikalo
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Correspondence to P. B. Isakova.

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Original Russian Text © P.B. Isakova, A.G. Zhilkin, D.V. Bisikalo, 2018, published in Astronomicheskii Zhurnal, 2018, Vol. 95, No. 8, pp. 519–529.

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Isakova, P.B., Zhilkin, A.G. & Bisikalo, D.V. Features of the Flow Structure in the Vicinity of the Inner Lagrangian Point in Polars. Astron. Rep. 62, 492–501 (2018). https://doi.org/10.1134/S1063772918080024

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