Effects of neutron-star dynamic tides on gravitational waveforms within   the effective-one-body approach
  Extracting the unique information on ultradense nuclear matter from the gravitational waves emitted by merging, neutron-star binaries requires robust theoretical models of the signal. We develop a novel effective-one-body waveform model that includes, for the first time, dynamic (instead of only adiabatic) tides of the neutron star, as well as the merger signal for neutron-star--black-hole binaries. We demonstrate the importance of the dynamic tides by comparing our model against new numerical-relativity simulations of nonspinning neutron-star--black-hole binaries spanning more than 24 gravitational-wave cycles, and to other existing numerical simulations for double neutron-star systems. Furthermore, we derive an effective description that makes explicit the dependence of matter effects on two key parameters: tidal deformability and fundamental oscillation frequency. 
Tanja Hinderer, Andrea Taracchini, Francois Foucart, Alessandra   Buonanno, Jan Steinhoff, Matthew Duez, Lawrence E. Kidder,...
gr-qc astro-ph.HE astro-ph.SR