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QPOs from post-shock accretion column of strongly magnetized accreting white dwarfs

Published online by Cambridge University Press:  09 October 2020

Prasanta Bera*
Affiliation:
Mathematical Sciences and STAG Research Centre, University of Southampton, Southampton SO17 1BJ, U.K. email: [email protected]
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Abstract

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An extended magnetosphere of a strongly magnetized accreting white dwarf (known as a polar) prevents the formation of an accretion disk and the matter is channelled to the magnetic pole(s). A few such sources show quasi-periodic oscillations in their optical light curves. These high-frequency oscillations are thought to be generated from the post-shock accretion column. The kinetic energy of the accretion flow is finally emitted from this post-shock region and the involved radiation processes decide the state of the matter. Here we study the structure and the dynamical properties of such accretion columns and compare the results with the observational characteristics.

Type
Contributed Papers
Copyright
© International Astronomical Union 2020

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