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Properties of pulsars with short and long periods

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Abstract

A comparative analysis has been conducted for the timescale on which the observed radio emission of pulsars is switched off (nulling fraction), the polarization parameters, and the residual deviations in the pulse arrival times for pulsars with periods P >0.1 s and P <0.1 s. For the former group of pulsars, the greater the energy injected into the magnetosphere from internal layers of the neutron star, the smaller the nulling fraction; in the latter group, nullings are not observed at all. Mode switches are also observed only in pulsarswith long pulse-to-pulse intervals (P >1 s), and in many objects they are correlatedwith the presence of nullings. The degree of polarization grows with decreasing period, and is systematically higher in objects with P <0.1 s than in long-period pulsars. The relative deviations of the pulse arrival times are, on average, appreciably smaller for pulsars with P >0.1 s. The observed differences in the parameters of pulsars with short and long periods can be understood if the radiation of pulsars with P <0.1 s is generated near the light cylinder.

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Authors and Affiliations

  1. Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Institute of Physics, Russian Academy of Sciences, Pushchino, Moscow oblast, 142290, Russia

    A. A. Loginov & I. F. Malov

Authors
  1. A. A. Loginov
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  2. I. F. Malov
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Correspondence to I. F. Malov.

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Original Russian Text © A.A. Loginov, I.F. Malov, 2015, published in Astronomicheskii Zhurnal, 2015, Vol. 92, No. 11, pp. 943–952.

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Loginov, A.A., Malov, I.F. Properties of pulsars with short and long periods. Astron. Rep. 59, 1053–1061 (2015). https://doi.org/10.1134/S1063772915110062

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  • DOI: https://doi.org/10.1134/S1063772915110062

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