Neutron star spin-up
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Neutron star spin up is the name given to the increase in rotational speed over time first noted in
Her X-1 but now observed in other X-ray pulsars
. In the case of Cen X-3, the pulse period is decreasing over a timescale of 3400 years (defined as , where is the rotation period and is the rate of change in the rotation period).
Ever since the detection of the first
companion star. In this context the magnetosphere is defined as the region of space surrounding the neutron star, in which the magnetic field determines the motion of the plasma. Inside the magnetic field, the plasma will eventually co-rotate with the neutron star while in the transition region, angular momentum from the accretion disk
will be transferred via the magnetic field to the neutron star, leading to the spin-up.
See also
- Stellar spin-down
References
- Bibcode:2001ASPC..229..423R.
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