Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339..297t&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 1, 1989, p. 297-313. Research supported by NSF and NASA.
Astronomy and Astrophysics
Astrophysics
52
Density Distribution, Magnetohydrodynamic Flow, Pulsars, Stellar Evolution, Stellar Mass Accretion, Accretion Disks, Angular Momentum, Asymmetry, Flow Distribution, Velocity Distribution
Scientific paper
A numerical study of the time variation of the angular momentum and mass capture rates for a central object accreting from a uniform medium with a velocity gradient transverse to the direction of the mean flow is presented, covering a range of velocity asymmetries and Mach numbers in the incident flow. It is found that the mass accretion rate in a given evolutionary sequence varies in an irregular manner, with the matter accreting onto the central object from either a continuously moving accretion wake or from an accretion disk. The implications of the results from the study of short-term fluctuations observed in the pulse period and luminosity of X-ray pulsars are discussed.
Fryxell Bruce A.
Taam Ronald E.
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