The origin of the high and low luminosity states in magnetic cataclysmic variables

Details The origin of the high and low luminosity states in magnetic cataclysmic variables The origin of the high and low luminosity states in magnetic cataclysmic variables

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...140l..16k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 140, no. 1, Nov. 1984, p. L16-L18.

Astronomy and Astrophysics

Astrophysics

17

Cataclysmic Variables, Magnetic Stars, Stellar Evolution, Stellar Luminosity, White Dwarf Stars, Binary Stars, Heating, Mass Transfer, Stellar Mass Accretion, X Rays

Scientific paper

The authors show that the high and low states of magnetic cataclysmic variables are probably due to X-ray heating of the companion star by the white dwarf. Shielding by the mass transfer stream stabilizes the accretion rate at a value only slightly above the average rate due to angular momentum losses from the binary, resulting in long-lived high states alternating with short lived low states in which the mass transfer reservoir is refilled. The authors speculate that the complex behaviour of GK Per, recently discovered to be magnetized, may also be explicable in a similar way.

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