Dark Matter Effects On Neutron Star Properties
  We study possible effects of a dark matter (DM) core on the maximum mass of a
neutron star (NS), on the mass-radius relation and on the NS tidal
deformability parameter $\Lambda$. We show that all these quantities would in
general be reduced in the presence of a DM core. In particular, our
calculations indicate that the presence of a DM core with a mass fraction $\sim
5\%$ could affect significantly the interpretation of these NS data as
constraints on the nuclear equation of state (EOS), potentially excluding some
EOS models on the basis of the measured mass of PSR J0348+0432, while allowing
other EOS models to become consistent with the LIGO/Virgo upper limit on
$\Lambda$. Specific scenarios for generating such DM cores are explored in an
Appendix.
