Аннотация и ключевые слова
Аннотация (русский):
The mass-exchange process in polars is discussed. We point out that the strong magnetic field of a white dwarf in these systems can under certain conditions prevent the material from flowing through the L1 point operating as a ``magnetospheric gate''. We show that the condition under which the ``magnetospheric gate'' is closed is satisfied in the majority of polars known to date. This finding opens the question about a possibility to realize an alternative mechanism of mass exchange in these systems. We briefly discuss application of this mechanism to the best studied polars.

Ключевые слова:
stars: cataclysmic variables, polars, magnetic fields; accretion; individual: AM Her, QQ Vul, AR UMa
Список литературы

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