Optical and X-ray observations of AO PISCIUM and the origin of the spin pulse in intermediate polars.
Abstract
Results are presented of three nights of time-resolved spectroscopic observations and of four Exosat X-ray observations of the AO Psc polar binary. It is found that the AO Psc has a magnetic field much weaker than that of the AM Her star and that it possesses an accretion disc extending inward to about 8 white-dwarf radii and outward to fill the Roche lobe (about 5 x 10 to the 10th cm). The findings are compared with those from other intermediate polars, and the implications of the findings for the class of intermediate polar binaries as a whole are discussed.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- January 1991
- DOI:
- 10.1093/mnras/248.2.233
- Bibcode:
- 1991MNRAS.248..233H
- Keywords:
-
- Accretion Disks;
- Astronomical Spectroscopy;
- Cataclysmic Variables;
- Magnetic Stars;
- Red Dwarf Stars;
- X Ray Astronomy;
- Emission Spectra;
- Exosat Satellite;
- Light Curve;
- Stellar Magnetic Fields;
- White Dwarf Stars;
- Astrophysics