Discovery of a magnetic compact star in the AM Herculis / 3U 1809+50 system.
Abstract
Linear and circular polarization observed in the V and I spectral bands reveal the presence of a compact star with a magnetic field of the order of 200 million gauss. Large variations of both polarization states, with a period of 0.128918 days, appear to be caused by rotation of the compact star. Unpolarized radiation observed in the U band suggest that a hot source, companion to the compact star, is unaffected by the magnetic field.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 1977
- DOI:
- Bibcode:
- 1977ApJ...212L.125T
- Keywords:
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- Dwarf Stars;
- Magnetic Stars;
- Polarization Characteristics;
- Stellar Magnetic Fields;
- X Ray Sources;
- Circular Polarization;
- Cyclotron Radiation;
- Novae;
- Stellar Rotation;
- Stellar Spectrophotometry;
- Astrophysics