Comparison of the X-ray observations of the AM Herculis objects to theory

Details Comparison of the X-ray observations of the AM Herculis objects to theory Comparison of the X-ray observations of the AM Herculis objects to theory

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...285..223i&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 285, Oct. 1, 1984, p. 223-231. Research supported by the U.S. Department of

Astronomy and Astrophysics

Astrophysics

18

Binary Stars, Cataclysmic Variables, Stellar Mass Accretion, Stellar Models, White Dwarf Stars, X Ray Sources, Light Curve, Magnetic Stars, Shock Waves, Stellar Radiation, Stellar Spectra, X Ray Spectra

Scientific paper

The X-ray observations of the original AM Her objects (AM Her, VV Pup, EF Eri, and AN UMa are reexamined. The work differs from that carried out previously in that the observed X-ray spectral properties are compared to theoretical models calculated using a dipolar accretion geometry rather than a spherically symmetric one, and the observed X-ray light curves are compared to theoretical light curves calculated assuming that the X-ray sources are cataclysmic variable-like binaries which contain a strongly magnetic white dwarf. The added constraints offered by the light curve properties restrict the possible kinds of X-ray emission scenarios in some cases. For instance, it is found that the X-ray observations of AM Her can be self-consistently explained by accretion powered radiative shock models. Further, the observations cannot be self-consistently explained by conduction dominated models as has been suggested by previous workers.

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