Astrophysics (Index)About

magnetic dipole braking

(magnetic dipole spin-down, magnetic braking)
(the effect of a reduction in the spinning of a magnetic field)

Magnetic dipole braking (or magnetic dipole spin-down or just magnetic braking) is the tendency for the rotation of rotating magnetic field to slow if it is embedded within a non-rotating magnetic field. Magnetic dipole radiation is generated in the process, which carries away the angular momentum and kinetic energy (KE). It is presumed to contribute to the slow reduction of the rotation of pulsars, likely to be most significant just after the neutron star's birth.

The rate of energy released by a pulsar's reduction in rotation is termed its spin-down luminosity, and the time it takes to spin down is the spin-down time (or spin-down timescale) calculated as the rotation's KE (spin-down energy) divided by the spin-down luminosity.


(magnetism,pulsars,rotation)
Further reading:
https://ui.adsabs.harvard.edu/abs/2016SCPMA..59a5752T/abstract
https://ui.adsabs.harvard.edu/abs/2019AIPC.2127b0033G/abstract
https://ui.adsabs.harvard.edu/abs/1989ApJ...337..803C/abstract

Referenced by page:
gyrochronology

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