Nonradial accretion onto magnetized neutron stars

Journal Article · Fri Oct 31 23:00:00 EST 1980 · Sov. Astron. (Engl. Transl.); (United States)

OSTI ID:6230054

Lipunov, V M

Accretion onto magnetized neutron stars incorporated into close binary systems is considered. The shape of the boundary of the magnetosphere for two limiting cases is found within the framework of the two-flux model of nonradial accretion. It is shown that the magnetospheres of long-period x-ray pulsars (periods of more than approx.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 (generating relativistic particles, gamma radiation and softer synchrotron radiation). 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 for by the moment imparted by the accreting matter. For the standard parameters the ''spin-orbital'' period of a neutron star proves to be on the order of 0.1 sec.

• Research Organization: P. K. Shternberg State Astronomical Institute
• OSTI ID: 6230054
• Journal Information: Sov. Astron. (Engl. Transl.); (United States), Journal Name: Sov. Astron. (Engl. Transl.); (United States) Vol. 24:6; ISSN SAAJA
• 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
ATMOSPHERES
BINARY STARS
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
MAGNETIC STARS
NEUTRON STARS
PULSARS
STAR ACCRETION
STAR EVOLUTION
STARS
STELLAR ATMOSPHERES
STELLAR MAGNETOSPHERES