THE NONEXPONENTIAL EVOLUTION OF PULSAR MAGNETIC-FIELDS .3. COMPARISON WITH THE NEW VELOCITY-MEASUREMENT

Monte Carlo simulations of the evolution of pulsars are carried out in order to compare with the recent measurement of the pulsar transverse velocity by Lyne & Lorimer (1994). The new electron density distribution model of Taylor & Cordes (1993) is adopted in the simulation. Accurate pulsar orbits in the Galactic gravitational held are calculated. It is found that the constant magnetic field model of pulsars can account for the new measurement of the pulsar transverse velocity, and the apparent correlation between the strength of the magnetic field and the transverse velocity of the pulsars. The present finding confirms the validity of the constant magnetic field model of pulsars, and consolidates the idea that the apparent correlation between the strength of the magnetic field and the transverse velocity of the pulsars is caused by observational selection effects.