Tidal effects in equal-mass binary neutron stars

Gravitational waves (GWs) emitted by binary black hole inspiral and coalescence are done first time direct detection by advanced Laser Interferometer Gravitational-wave Observatory (aLIGO) detector. We may expect that the forthcoming aLIGO, VIRGO and KAGRA (LCGT) detectors will also detect gravitational waves emitted by binary neutron star is in a few years. It is understood that the late inspiral signal will be influenced by tidal interaction between binary stars (NSNS), which gives the important information about the equation-of-state (EOS) of matter at nuclear density. However, to extract such information, we need a theoretical gravitational waves template. In present calculations, we evaluate the mass-radius (M-R) and tidal deformability of the single neutron star using four equation-of- states (EOSs) and then extend our study to the analysis of the gravitational waveform from binary neutron-stars at a distance of D=100 Mpc using the post-Newtonian (PN) theoretical templates TaylorT4 (TT4)