The X-ray properties of GX 301 - 2 (4U 1223 - 62)

Details The X-ray properties of GX 301 - 2 (4U 1223 - 62) The X-ray properties of GX 301 - 2 (4U 1223 - 62)

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376..245h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, July 20, 1991, p. 245-255.

Astronomy and Astrophysics

Astronomy

28

Neutron Stars, Pulsars, Stellar Mass Accretion, Stellar Winds, X Ray Binaries, X Ray Spectra, Exosat Satellite, Line Spectra, Spaceborne Astronomy, Spectrum Analysis, Stellar Luminosity, Stellar Models, Stellar Spectra

Scientific paper

The X-ray luminosity of the X-ray binary pulsar GX 301 - 2 exhibits a strong maximum near periastron passage of the neutron star, or phase 0, but with the peak 0.05 in phase before. During the interval between phase 0.9 and 0.25, during periods when the absorption was high, the X-ray spectra indicate a strong low-energy excess that may be modeled by X-ray emission which is scattered around a region of enhanced wind density by the less dense ambient wind. A model of enhanced mass loss from the primary toward the neutron star generating the dense gas stream is noted to be able to reproduce the orbital phase-dependence of the X-ray luminosity and absorption.

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