On the time variation of rotation parameters of pulsar NP 0532

Details On the time variation of rotation parameters of pulsar NP 0532 On the time variation of rotation parameters of pulsar NP 0532

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..69..127g&link_type=abstract

Astrophysics and Space Science, vol. 69, no. 1, May 1980, p. 127-131.

Astronomy and Astrophysics

Astrophysics

Pulsars, Stellar Evolution, Stellar Models, Stellar Rotation, Angular Velocity, Equations Of Motion, Magnetic Dipoles

Scientific paper

Calculations of the rotation parameters at initial stage of evolution on the basis of the model suggested by Jones and published observational data of NP 0532 and its first derivative with respect to time can be explained by an increase of the angle between the magnetic moment and the rotation axis. The time variation of rotation parameters essentially depends on the value and time variation of the viscosity of the star. In spite of the fact that the observational data are not extensive enough, it is possible to conclude that initial rotation frequency of NP 0532 did not exceed essentially 50 Hz.

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