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Astron. Astrophys. 325, 1031-1034 (1997)

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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

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© European Southern Observatory (ESO) 1997

Online publication: April 28, 1998

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