  Recent analyses of several isospin effects in heavy-ion reactions have
allowed us to constrain the density dependence of nuclear symmetry energy at
sub-saturation densities within a narrow range. Combined with constraints on
the Equation of State (EOS) of symmetric nuclear matter obtained previously
from analyzing the elliptic flow in relativistic heavy-ion collisions, the EOS
of neutron-rich nuclear matter is thus partially constrained. Here we report
effects of the partially constrained EOS of neutron-rich nuclear matter on the
mass-radius correlation, moment of inertia, elliptical deformation and
gravitational radiation of (rapidly) rotating neutron stars.
