Constraints on Neutron Star Radii Based on Chiral Effective Field Theory Interactions
Abstract
We show that microscopic calculations based on chiral effective field theory interactions constrain the properties of neutron-rich matter below nuclear densities to a much higher degree than is reflected in commonly used equations of state. Combined with observed neutron star masses, our results lead to a radius R=9.7-13.9km for a 1.4M⊙ star, where the theoretical range is due, in about equal amounts, to uncertainties in many-body forces and to the extrapolation to high densities.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2010
- DOI:
- 10.1103/PhysRevLett.105.161102
- arXiv:
- arXiv:1007.1746
- Bibcode:
- 2010PhRvL.105p1102H
- Keywords:
-
- 26.60.Kp;
- 21.65.Cd;
- 97.60.Jd;
- Equations of state of neutron-star matter;
- Asymmetric matter neutron matter;
- Neutron stars;
- Nuclear Theory;
- Astrophysics - Solar and Stellar Astrophysics;
- High Energy Physics - Phenomenology;
- Nuclear Experiment
- E-Print:
- 4 pages, 4 figures