Acceleration of pulsars by asymmetric radiation. III - Observational evidence

Details Acceleration of pulsars by asymmetric radiation. III - Observational evidence Acceleration of pulsars by asymmetric radiation. III - Observational evidence

Jun 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...214..885t&link_type=abstract

Astrophysical Journal, Part 1, vol. 214, June 15, 1977, p. 885-890.

Astronomy and Astrophysics

Astrophysics

14

Axes Of Rotation, Pulsars, Radiation Effects, Stellar Motions, Stellar Rotation, Angular Velocity, Asymmetry, Crab Nebula, Lines Of Force, Magnetic Field Configurations, Polarization Characteristics, Radiation Distribution, Radio Emission

Scientific paper

The theory of pulsar acceleration by asymmetric radiation predicts that the pulsar velocities ought to be aligned parallel to their spin axes. Assuming that the orientation of the pulsar spin axis in the plane of the sky is determined by the position angle of polarization, this prediction is tested by a comparison of polarization position angles and velocity position angles determined by proper motion measurements for 10 pulsars. Allowing for an ambiguity of 90 deg in the angle between the polarization position angle and the projection of the spin axis in the sky which is suggested by single-pulse observations, the data are in excellent agreement with a parallel alignment of velocity and spin axis. The data are not generally in agreement with the angle differences between velocity and spin axis in space having a random distribution or being preferentially near 90 deg unless the spin axes are also preferentially in the plane of the sky.

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