Abstract
A new mechanism for the generation of X-ray emission in binary Be/X stars is proposed. It is shown that the mass-transfer rate through the point L1 in a model in which the optical component of a Be/X star has an expanding envelope is sufficient to generate the observed X-ray luminosities of such stars. The results of computations indicate a dependence between the orbital periods and X-ray fluxes of these systems. The relationship between the orbital perod and the mass-transfer rate during flares obtained from modeling corresponds to the observed dependence of the maximum X-ray flux on the orbital period.
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Original Russian Text © P.V. Kaigorodov, D.V. Bisikalo, 2012, published in Astronomicheskii Zhurnal, 2012, Vol. 89, No. 12, pp. 1038–1044.
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Kaigorodov, P.V., Bisikalo, D.V. A possible mechanism for the X-ray emission of Be/X stars. Astron. Rep. 56, 945–951 (2012). https://doi.org/10.1134/S1063772912120025
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DOI: https://doi.org/10.1134/S1063772912120025