Statistics – Computation
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.236..245p&link_type=abstract
In ESA Recent Results on Cataclysmic Variables p 245-249 (SEE N86-20287 10-93)
Statistics
Computation
6
Cataclysmic Variables, High Temperature Plasmas, Polarimetry, Polarized Light, Magnetic Poles, Stellar Magnitude, Stellar Models, Stellar Spectrophotometry
Scientific paper
Simultaneous UBVRI polarimetric and photometric observations, carried out in June 1984, on the cataclysmic variable AM Her are reported. They show a broad linear polarization pulse (or 2 overlapping spikes) and the inclination 35 to 40 deg can be derived from the phase dependence of the position angle. The latitude of the magnetic pole (= 5 to 65 deg) depends on wavelength, if derived from the 2 subsequent crossovers of the circular polarization. The observations are compared with the warm ( 1keV) magnetoactive plasma computations above the hot ( or = 20 keV) shock-heated region. To explain better the wavelength dependence of the polarization curves, new physical processes and/or new ranges of the model parameters should be included in the plasma computations. However, the overall shape of the orbital phase dependent variations seems to be adequately explained by the changing viewing angle between the line of sight and the magnetic field lines.
Fimov Y.
Kyroelaeinen J.
Piirola Vilppu
Shakhovskoi N.
Vilhu Osmi
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