Astrophysical constraints on the parameter space of the neutron-star equation of state

Details Astrophysical constraints on the parameter space of the neutron-star equation of state Astrophysical constraints on the parameter space of the neutron-star equation of state

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aps..apr.l8003l&link_type=abstract

American Physical Society, 2008 APS April Meeting and HEDP/HEDLA Meeting, April 11-15, 2008, abstract #L8.003

Physics

Scientific paper

The neutron-star equation of state is largely unknown above nuclear density but can be accurately parameterized by only 4 free parameters. The parameter space may be constrained with observations of neutron stars, and we find the constraint surfaces associated with causality and with observed limits on masses, radii, redshift, moment of inertia, and spin frequency. There are only a few hard (model-independent) constraints; of these, the most stringent is associated with the largest observed neutron-star masses, and this constraint only restricts the parameter space to one side of a constraint surface. Anticipated future observations of moments of inertia of stars with known masses can more sharply constrain the parameter space, confining the parameter space to a surface.

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