Disk accretion onto a weak-field neutron star - Boundary layer/disk luminosity ratio

Details Disk accretion onto a weak-field neutron star - Boundary layer/disk luminosity ratio Disk accretion onto a weak-field neutron star - Boundary layer/disk luminosity ratio

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pazh...12..286s&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 12, Apr. 1986, p. 286-292) Soviet Astronomy Letters (ISSN 0360-0327), vol. 12, Mar.-Apr

Astronomy and Astrophysics

Astronomy

9

Accretion Disks, Neutron Stars, Stellar Luminosity, X Ray Stars, Angular Velocity, Boundary Layers, Stellar Magnetic Fields, Stellar Rotation

Scientific paper

X-ray bursters are considered to be neutron stars with a weak magnetic field that are undergoing disk-type accretion. If the field is weak enough, the disk will reach to the neutron star surface; next to the surface, a narrow boundary layer will develop, girdling the star. Using available formulations for luminosity and for free particle motion, it is shown that the boundary layer at the neutron star surface will be substantially more X-ray luminous than the extended accretion disk itself, unless the star is spinning exceptionally fast.

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