Picture of Magnetic Cataclysmic Variable: Polar or AM Herculis System. This image is 400 x 515 pixels; the original measures 2,634 x 3,394 pixels.
Polar or AM Herculis System. An M-dwarf star loses
material to a superstrongly magnetic white dwarf star. Again, the material forms
an accretion stream. In AM Hers, the magnetic field is much stronger than in DQ Hers.
Such a strong field captures the infalling material before it has a chance to form
an accretion disc and tightly constrains it into a funnel. The channeled material
then crashes near the magnetic pole of the white dwarf, again causing strong X-ray
emissions. The blue haze around the white dwarf represents its magnetosphere.