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Binary and Other Recycled Pulsars

Published online by Cambridge University Press:  07 August 2017

Virginia Trimble*
Affiliation:
Astronomy Program University of Maryland College Park MD 20742 USAPhysics Department University of California Irvine CA 92717 USA

Abstract

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Binary pulsars and others with weak fields and rapid rotation now number several dozen and appear to have been spun up by close binary mass transfer. Some are lineal descendents of X-ray binaries; others may result from accretion-induced collapse of binary white dwarfs or from captures, exchanges, and collisions in clusters. Seven accurate neutron star masses, 1.27-1.44 Mo, have been measured so far. Outstanding issues include the dominant formation process in various sites and the time history of the neutron stars' magnetic fields in and out of binaries.