Observational analysis reveals tight mass bounds between 1.01 and 1.64 solar masses in binary pulsars, supporting core-collapse formation models for gravitational wave detection.
Radio observations of neutron star binary pulsar systems have constrained strongly the masses of eight neutron stars. Assuming neutron star masses are uniformly distributed between lower and upper bounds mₗ and mᵤ, the observations determine with 95% confidence that 1.01<mₗM_<1.34 and 1.43<mᵤM_<1.64. These limits give observational support to neutron star formation scenarios that suggest that masses should fall predominantly in the range 1.3<mM_<1.6, and will also be important in the interpretation of binary inspiral observations by the Laser Interferometer Gravitationalwave Observatory.
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L. S. Finn (1994) studied this question.
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