Orientation of pulsar magnetic dipole moments

Details Orientation of pulsar magnetic dipole moments Orientation of pulsar magnetic dipole moments

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976natur.262..120j&link_type=abstract

Nature, vol. 262, July 8, 1976, p. 120, 121.

Astronomy and Astrophysics

Astronomy

21

Dipole Moments, Magnetic Dipoles, Pulsars, Stellar Magnetic Fields, Astronomical Models, Dynamo Theory, Elementary Particles, Particle Interactions, Polar Caps, Stellar Rotation, Superfluidity, Time Constant

Scientific paper

The change in the angle between the magnetic dipole moment and the spin of a pulsar with time is investigated on the basis of the general features of the superfluidity of the core and of the properties of the nonlepronic weak interaction between elementary particles. It is shown that the torque associated with the rotating dipole moment is free to cause alignment with the spin only in pulsars older than the Crab and possibly the Vela pulsar. The sine of the angle follows an exponential law with a time constant of about one million years, consistent with models in which emission occurs from regions near the polar caps rather than from the light cylinder.

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