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Astron. Astrophys. 325, 1031-1034


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On the absence of mildly recycled radio pulsars
amongst the population of ordinary single radio pulsars

Jan Willem Hartman, Simon Portegies Zwart, and Frank Verbunt

Astronomical Institute, Utrecht University, P.O.Box 80000, 3508 TA Utrecht, The Netherlands

Received 12 December 1996 / Accepted 25 March 1997

Abstract

Current scenarios for the evolution of binaries predict that only 1% or less of the single radio pulsars in the galactic disk have been recycled in a binary. The fraction of such pulsars amongst the detected single radio pulsars is smaller than this. For magnetic field strengths FORMULA G the period vs. magnetic field diagram shows no evidence for injection of pulsars at FORMULA s. For magnetic field strengths FORMULA G recycled single pulsars cannot be discriminated from ordinary pulsars, i.e. there is no reason to assume that they are recycled.

Key words: stars: neutron - pulsars: general

Send offprint requests to: F. Verbunt


© European Southern Observatory (ESO) 1997

Online publication: September 9, 1997
Last change: April 28, 1998
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