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

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170273· OSTI ID:5031321

Haberl, F ^[1]

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1. EXOSAT Observatory, Noordwijk (Netherlands)

The X-ray luminosity of the X-ray binary pulsar GX 301 {minus} 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. 18 refs.

• OSTI ID: 5031321
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 376; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
LUMINOSITY
MASS TRANSFER
MATHEMATICAL MODELS
NEUTRON STARS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PULSARS
SPECTRA
STAR ACCRETION
STAR EVOLUTION
STAR MODELS
STARS
STELLAR ACTIVITY
STELLAR WINDS
X-RAY SPECTRA