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Each of the potential signals from a black hole-neutron star merger shouldcontain an imprint of the neutron star equation of state: gravitational wavesvia its effect on tidal disruption, the kilonova via its effect on the ejecta,and the gamma ray burst via its effect on the remnant disk. These effects havebeen studied by numerical simulations and quantified by semi-analytic formulae.However, most of the simulations on which these formulae are based useequations of state without finite temperature and composition-dependent nuclearphysics. In this paper, we simulate black hole-neutron star mergers varyingboth the neutron star mass and the equation of state, using threefinite-temperature nuclear models of varying stiffness. Our simulations largelyvindicate formulae for ejecta properties but do not find the expecteddependence of disk mass on neutron star compaction. We track the earlyevolution of the accretion disk, largely driven by shocking and fallbackinflow, and do find notable equation of state effects on the structure of thisearly-time, neutrino-bright disk.

Black hole-neutron star mergers using a survey of finite-temperature equations of state