Absorption dips and the properties of the accretion stream in polars

Details Absorption dips and the properties of the accretion stream in polars Absorption dips and the properties of the accretion stream in polars

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237..299w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, March 15, 1989, p. 299-310.

Astronomy and Astrophysics

Astronomy

27

Absorption Spectra, Accretion Disks, Astronomical Photometry, Cataclysmic Variables, Stellar Systems, Exosat Satellite, Infrared Spectra, Light Curve, Visible Spectrum, X Ray Spectra

Scientific paper

Simultaneous X-ray, optical and infrared observations of the absorption dips in the polar system EF Eri are presented. These observations are used to determine the properties of the dips and develop a simple model for the dips in which they are caused by absorption in the accretion stream as it crosses the line-of-sight to the X-ray/optical emission region located in the vicinity of the magnetic pole of the white dwarf. Application of this model to the dips observed in EF Eri yields direct estimates of the density and structure of the accretion stream.

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