Constraints on neutron star radii based on Chiral effective field theory interactions

TY - JOUR

T1 - Constraints on neutron star radii based on Chiral effective field theory interactions

AU - Hebeler, K.

AU - Lattimer, J.M.

AU - Pethick, C. J.

AU - Schwenk, A.

PY - 2010/10/13

Y1 - 2010/10/13

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevLett.105.161102

DO - 10.1103/PhysRevLett.105.161102

M3 - Journal article

SN - 0031-9007

VL - 105

SP - 161102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

ER -