Abstract The boundary layer between the accretion disc and white dwarf in non-magnetic cataclysmic variables is the major source of X-rays from these systems. Two modes of X-ray emission exist; at low accretion rates a thermal instability develops in the accreting matter and a hard X-ray emitting corona is formed around the white dwarf; at high accretion rates a cool, very soft X-ray emitting boundary layer is formed. Hard and soft X-ray observations of cataclysmic variables with a boundary layer are described and compared with theory. Emphasis is put on the new insight we have gained from the observations with the EXOSAT observatory.


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    Title :

    Accretion disc boundary layers with white dwarfs


    Contributors:

    Published in:

    Advances in Space Research ; 8 , 2-3 ; 265-272


    Publication date :

    1988-01-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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