Zhang et al summarize the measurements of neutron-star masses and make inferences from the distribution of millisecond and regular pulsar masses about the formation of millisecond pulsars. The average mass of the pulsar population has grown since 1999, and the mean mass of fast MSPs is larger than slower ones. Double neutron-star binaries typically have even lower masses. However, none of these conclusions are particularly significant in the statistical sense. On the other hand, the observed masses of MSPs argue that the formation of millisecond pulsars through the accretion-induced collapse of white dwarfs is unlikely because most of the MSPs have masses that exceed the Chandrasekhar limit for white dwarfs.
arXiv:1010.5429 [pdf, ps, other] Title: Study of measured pulsar masses and their possible conclusions
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