On the time variation of rotation parameters of pulsar NP 0532 |
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| Authors: | S A Gerasimov A A Stepanian |
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| Institution: | (1) Crimean Astrophysical Observatory, Nauchny, Crimea, U.S.S.R. |
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| Abstract: | 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 were made. It is shown that the observed dependence of the angular velocity 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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