Neutron Star Mass and Radius Measurements

Lattimer, James M.

doi:10.3390/universe5070159

Title: Neutron Star Mass and Radius Measurements

Journal Article · Fri Jun 28 00:00:00 EDT 2019 · Universe

DOI:https://doi.org/10.3390/universe5070159· OSTI ID:1530010

Constraints on neutron star masses and radii now come from a variety of sources: theoretical and experimental nuclear physics, astrophysical observations including pulsar timing, thermal and bursting X-ray sources, and gravitational waves, and the assumptions inherent to general relativity and causality of the equation of state. These measurements and assumptions also result in restrictions on the dense matter equation of state. The two most important structural parameters of neutron stars are their typical radii, which impacts intermediate densities in the range of one to two times the nuclear saturation density, and the maximum mass, which impacts the densities beyond about three times the saturation density. Especially intriguing has been the multi-messenger event GW170817, the first observed binary neutron star merger, which provided direct estimates of both stellar masses and radii as well as an upper bound to the maximum mass.

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Research Organization:: State Univ. of New York (SUNY), Albany, NY (United States); Stony Brook Univ., NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Aeronautics and Space Administration (NASA)

Grant/Contract Number:: FG01-87ER40317; FG02-88ER40388; FG02-87ER40317; 80NSSC17K0554

OSTI ID:: 1530010

Alternate ID(s):: OSTI ID: 1610127

Journal Information:: Universe, Journal Name: Universe Vol. 5 Journal Issue: 7; ISSN 2218-1997

Publisher:: MDPICopyright Statement

Country of Publication:: Switzerland

Language:: English

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Cited by: 24 works

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79 ASTRONOMY AND ASTROPHYSICS
Astronomy & Astrophysics
Physics
neutron stars
dense matter equation of state
nuclear structure
gravitational waves

Title: Neutron Star Mass and Radius Measurements

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