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Title:
Discovery of a magnetic compact star in the AM Herculis/3U 1809+50 system
Authors:
Tapia, S.
Affiliation:
AA(Arizona, University, Tucson, Ariz.)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 212, Mar. 15, 1977, p. L125-L129. NSF-supported research. (ApJL Homepage)
Publication Date:
03/1977
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Dwarf Stars, Magnetic Stars, Polarization Characteristics, Stellar Magnetic Fields, X Ray Sources, Circular Polarization, Cyclotron Radiation, Novae, Stellar Rotation, Stellar Spectrophotometry
DOI:
10.1086/182390
Bibliographic Code:
1977ApJ...212L.125T

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.

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