Nonradial accretion onto magnetized neutron stars

Details Nonradial accretion onto magnetized neutron stars Nonradial accretion onto magnetized neutron stars

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980azh....57.1253l&link_type=abstract

(Astronomicheskii Zhurnal, vol. 57, Nov.-Dec. 1980, p. 1253-1265.) Soviet Astronomy, vol. 24, Nov.-Dec. 1980, p. 722-729. Trans

Astronomy and Astrophysics

Astronomy

9

Binary Stars, Magnetic Stars, Neutron Stars, Pulsar Magnetospheres, Pulsars, Stellar Mass Accretion, Stellar Magnetic Fields, Stellar Models, Stellar Motions, Stellar Rotation, X Ray Sources

Scientific paper

The shape of the boundary of the magnetosphere for two limiting cases is determined within the framework of the two-flux model of nonradial accretion onto magnetized neutron stars in close binary systems. It is shown that the magnetospheres of long-period X-ray pulsars (periods of more than 10 sec) are closed. The magnetospheres of pulsars with shorter periods may be open, and in this case they may be sources of magnetic-rotator emission. For a magnetized neutron star in a binary system, there is a preferred state, the spin-orbital mode, in which the decrease in the angular momentum of the neutron star caused by magnetic-rotator emission is exactly compensated by the moment imparted by the accreting matter. For the standard parameters, the spin-orbital period of a neutron star is of the order of 0.1 sec.

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