Multicolour photopolarimetry of magnetic cataclysmic variables

Details Multicolour photopolarimetry of magnetic cataclysmic variables Multicolour photopolarimetry of magnetic cataclysmic variables

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.169..133p&link_type=abstract

(IAU, European Regional Astronomy Meeting on New Windows to the Universe, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics a

Astronomy and Astrophysics

Astrophysics

Cataclysmic Variables, Eclipsing Binary Stars, Magnetic Stars, Polarimetry, White Dwarf Stars, Cyclotron Radiation, Emission Spectra, Light Curve, Ubv Spectra

Scientific paper

Observational evidence of optical cyclotron emission from discrete regions on the highly magnetic white dwarf components of AM Herculis type binaries is presented on the basis of linear and circular polarimetry of EF Eri, AM Her, VV Pup, and V834 Cen. Regarding the geometry of the main emitting region in VV Pup, simultaneous UBVRI photometry during the eclipse by the white dwarf shows that the size of the emitting region (0.1-0.3 in units of the white dwarf radius) increases by a factor of about two from ultraviolet to near-infrared.

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