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   PR # 12225
      BY Cam is an X-ray bright magnetic cataclysmic variable which may
    provide important clues to the properties of other objects of its
    class.  It lacks a soft X-ray excess, and measurements of its iron
    line properties set sensitive limits on any component from fluorescen
    ce off of cold material.A possible explanation for this behavior is
    beaming of the hard X-rays,due either to limb brightening or obscurat
    ion, which prevents the surface of the white dwarf star from being
    strongly illuminated.  A test of this idea,which we propose to carry
    out with ASCA, is to search for orbital phase variability of the iron
    line and low energy X-ray spectrum.


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