The fate of matter and angular momentum in disk accretion onto a magnetized neutron star.
Abstract
Observed values for the average rate of decrease of the rotational period for seven binary X-ray sources are used to establish limits on the outer radius (Rm) of the magnetospheres of the neutron stars. In all cases this radius is found to be significantly less than the 'corotation radius,' where the Keplerian orbital angular velocity matches the stellar angular velocity. A simple but plausible model for the shape and location of Rm in disk accretion is developed to follow the matter from the disk onto the star. This model permits an estimate of the magnetic dipole moments and radiating areas of the individual neutron stars.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1978
- DOI:
- 10.1086/155823
- Bibcode:
- 1978ApJ...219..617S
- Keywords:
-
- Angular Momentum;
- Magnetic Stars;
- Neutron Stars;
- Stellar Mass Accretion;
- Stellar Rotation;
- Angular Velocity;
- Binary Stars;
- Earth Magnetosphere;
- Galactic Radiation;
- Kepler Laws;
- Rotating Disks;
- X Ray Sources;
- Astrophysics;
- Magnetospheres:Neutron Stars;
- Magntetospheres:Neutron Stars;
- Neutron Stars:X-Ray Binaries