  The late stage of an inspiraling neutron star binary gives rise to strong
gravitational wave emission due to its highly dynamic, strong gravity.
Moreover, interactions between the stellar magnetospheres can produce
considerable electromagnetic radiation. We study this scenario using fully
general relativistic, resistive magneto-hydrodynamics simulations. We show that
these interactions extract kinetic energy from the system, dissipate heat, and
power radiative Poynting flux, as well as develop current sheets. Our results
indicate that this power can: (i) outshine pulsars in binaries, (ii) display a
distinctive angular- and time-dependent pattern, and (iii) radiate within large
opening angles. These properties suggest that some binary neutron star mergers
are ideal candidates for multimessenger astronomy.
