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Analysis of the pulsar P-Ṗ distribution

Phinney, E. S. and Blandford, R. D. (1981) Analysis of the pulsar P-Ṗ distribution. Monthly Notices of the Royal Astronomical Society, 194 (1). pp. 137-148. ISSN 0035-8711.

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A new technique for the systematic evaluation of models of pulsar period evolution on the basis of a complete observational sample is outlined and applied to the existing incomplete sample. Possible selection effects are discussed. It is concluded that the simple law for the rate of change of period P, Ṗ ∝ P^(2−n) is incompatible with the assumption of stationarity and pulsar ‘death’ at large periods, if n > 2. Models with n < 2, or with n ≳ 2.5 and torque decay on a time-scale of 1 Myr are consistent with the data. Another possibility is that the beaming fraction decreases by a factor ∼5 as a pulsar slows down. A new procedure for deriving a rigorous lower limit to the creation rate of pulsars within the sample is presented, and it is shown that most pulsars appear to be born with large values of Ṗ.

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Blandford, R. D.0000-0002-1854-5506
Additional Information:© 1981 Royal Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1980 May 19; in original form 1980 March 18. RB thanks the Institute of Astronomy, Cambridge, for hospitality while part of this work was carried out. Support under NSF grant AST78-05484 is gratefully acknowledged.
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Official Citation:E. S. Phinney, R. D. Blandford, Analysis of the pulsar P–P˙ distribution, Monthly Notices of the Royal Astronomical Society, Volume 194, Issue 1, 1 January 1981, Pages 137–148,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95668
Deposited By: George Porter
Deposited On:23 May 2019 19:48
Last Modified:03 Oct 2019 21:15

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