Equation of State Constraints from Nuclear Physics, Neutron Star Masses, and Future Moment of Inertia Measurements
- Technische Univ. Darmstadt (Germany);GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany)
- Stony Brook Univ., NY (United States)
- Univ. of Copenhagen (Denmark); KTH Royal Inst. of Technology and Stockholm Univ. (Sweden)
- Technische Univ. Darmstadt (Germany);GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); Max-Planck-Institut für Kernphysik, Heidelberg (Germany)
We explore constraints on the equation of state (EOS) of neutron-rich matter based on microscopic calculations up to nuclear densities and observations of neutron stars. In a previous work we showed that predictions based on modern nuclear interactions derived within chiral effective field theory and the observation of two-solar-mass neutron stars result in a robust uncertainty range for neutron star radii and the EOS over a wide range of densities. In this work we extend this study, employing both the piecewise polytrope extension from Hebeler et al. as well as the speed of sound model of Greif et al., and show that moment of inertia measurements of neutron stars can significantly improve the constraints on the EOS and neutron star radii.
- Research Organization:
- Research Foundation of New York, NY (United States); State Univ. of New York (SUNY), Albany, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- FG02-87ER40317
- OSTI ID:
- 1864781
- Alternate ID(s):
- OSTI ID: 1849952
- Journal Information:
- The Astrophysical Journal, Vol. 901, Issue 2; ISSN 0004-637X
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
A new consistent Neutron Star Equation of State from a Generalized Skyrme model | text | January 2020 |
New equations of state constrained by nuclear physics, observations, and QCD calculations of high-density nuclear matter | text | January 2020 |
Quasi-universal relations for generalized Skyrme stars | text | January 2020 |
Topology change, emergent symmetries and compact star matter | text | January 2021 |
A multifluid perspective on multimessenger modelling | preprint | January 2021 |
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