Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999acaps..19..281w&link_type=abstract
Acta Astrophys. Sin., Vol. 19, No. 3, p. 281 - 291
Astronomy and Astrophysics
Astrophysics
Neutron Stars: Accretion, Close Binaries: Quasi-Periodic Oscillations
Scientific paper
The infalling movement of the matter accreted onto a magnetized neutron star is discussed. A one-dimensional accretion column model is presented to describe the variations of the infalling velocity, density and temperature of the infalling plasma. The column can be divided from top down into four zones, impact deceleration of ideal gas, deceleration of degenerate gas and outflow. As an example, the accretion column for an accretion rate of 1017g/s and a polar magnetic field of ≍108T was calculated. The authors discuss thermonuclear reaction inside the column, and consider that it may be related to the quasi-periodic oscillation (QPO) of the X-ray flux in low-mass close binaries.
Lin Xuanbin
Wu Hao
Xu Haiguang
You Junhan
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