THE ANGLE BETWEEN THE MAGNETIC-MOMENT AND ROTATION AXIS IN MILLISECOND PULSARS

A method for calculation of the angle beta between the magnetic moment and rotation axis in pulsars with periods P < 0.1 s is proposed. The values of beta calculated for 32 pulsars separate into two groups: in the first, <(beta)over bar> = 72.degrees 6, and in the second, <(beta) over bar> = 13.degrees 7. The more frequent appearance of interpulses expected for such a distribution is confirmed by observations: 23% of pulsars with P < 0.1 s have interpulses, while only 2.3% of pulsars wi th P > 0.1 s have interpulses.