Erratum: Gravitational waves from nonspinning black hole-neutron star binaries: Dependence on equations of state [Phys. Rev. DPRVDAQ1550-799882, 044049 (2010)10.1103/PhysRevD.82.044049]

Anisotropic mass ejection from black hole-neutron star binaries: Diversity of electromagnetic counterparts

“…Gravitaional waves from BH-NS binaries will enable us to probe the supranuclear-density matter [4,5] and cosmological expansion [6] via the NS tidal effect even without electromagnetic (EM) observation. The imprint of the NS tidal effect is the most prominent when the NS is disrupted outside the BH innermost stable circular orbit [7,8]. If tidal disruption occurs outside it, a hot and massive remnant disk may be formed around a remnant BH.…”

Constraining the equation of state of nuclear matter with gravitational wave observations: Tidal deformability and tidal disruption

“…This phenomenon can occur if the star is very deformable, if the BH is rapidly spinning, or if the mass-ratio is very small (see e.g. [8,10,26,27]). Otherwise, the NS behaves nearly as a point particle until the very last stages of the coalescence, and it is swallowed by the BH without being disrupted.…”

“…So far, studies of f cut for BH-NS binaries have been carried out with either semi-analytical approaches [5,6] or fully numerical simulations [8,26,27]. The first proposal of using a measure of f cut to determine R NS goes back to more than a decade ago [5]; in that article a relation, based on simplifying assumptions and derived in a Newtonian framework, was proposed to connect f cut with R NS .…”

“…In this case the GW-signal exhibits a frequency cut-off f cut which also depends on the EoS. Most of the articles cited above include either λ (or C) or f cut in the model; in this paper, we shall include both parameters in the signal template and, using recently proposed analytic fits of C(λ) [14] and f cut (C) [8], and a Fisher matrix approach, we shall evaluate whether a joint analysis can improve the possibility to gain information on the NS EoS with respect to an approach which includes only one of these quantities. It should be stressed that tidal disruption in BH-NS or NS-NS binaries is of particular interest, since they are have been invoked as possible engines of Short Gamma-Ray Bursts [15] (for a review on the subject, see e.g.…”

“…For this reason, in recent years much effort has been devoted to model the signal emitted during the latest phases of the inspiralling of NS-NS and NS-BH binaries, when the imprint of the equation of state (EoS) on the signal is more pronounced (see e.g. [3][4][5][6][7][8][9][10][11][12][13]). However, the best strategy to extract as much of information as possible on the NS EoS from a detected signal is still under debate.…”