Quasiperiodicity in cataclysmic variable stars caused by solar-type magnetic cycles

Details Quasiperiodicity in cataclysmic variable stars caused by solar-type magnetic cycles Quasiperiodicity in cataclysmic variable stars caused by solar-type magnetic cycles

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.336..129w&link_type=abstract

Nature (ISSN 0028-0836), vol. 336, Nov. 10, 1988, p. 129-134. Research supported by NASA and Council of Scientific and Industria

Computer Science

113

Accretion Disks, Cataclysmic Variables, Stellar Oscillations, Supernova Remnants, White Dwarf Stars, Long Term Effects, Mass Transfer, Stellar Magnetic Fields, Stellar Magnitude, Stellar Mass Accretion, Sunspots

Scientific paper

Cyclical variations of orbital periods, quiescent magnitudes and outburst intervals in the activity of cataclysmic variable binary stars are inter-related and are ascribed to variations in radii of the secondaries, caused by solar-type (sunspot) magnetic cycles. In the nova remnant DQ Herculis the observed variations in orbital period and quiescent magnitude are consistent with this mechanism. But accretion onto the white dwarf, from an accretion disk acquired from its companion, cannot explain the observed variation of the 71-second oscillations.

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