Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...319..162n&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 319, Aug. 1, 1987, p. 162-179.
Astronomy and Astrophysics
Astrophysics
146
Binary Stars, Pulsars, Spin Dynamics, Statistical Distributions, Stellar Evolution, Stellar Rotation, Magnetic Dipoles, Milky Way Galaxy, Solar Neighborhood, Stellar Magnetic Fields
Scientific paper
A statistical analysis of radio pulsar data is presented. The basic theory behind the analysis is discussed, and all the selection effects of the major pulsar surveys are considered in detail, paying particular attention to those that depend on pulsar period. The birthrate of pulsars is estimated to be one pulsar in about 56 years, and the local rate in the solar neighborhood is estimated to be one pulsar in about 90,000 yr/sq kpc. The calculations confirm an earlier result from Vivekanand and Narayan (1981) that many pulsars are born with initial periods as slow as 0.5 s. Three possibilities are discussed for the correlation between initial spin period and magnetic field. The issue of a luminosity model for radio pulsars is also addressed, and the model of Lyne et al. (1985) is rejected in favor of a power-law model, which fits the data better.
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