Affine-model hydrodynamics shows three-wave NS tidal couplings are fixed by linear Love numbers, yet omit ~1.7 rad of GW phase per star by merger; four-wave terms cannot lock f-modes.
Resonant Shattering of Neutron Star Crusts
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abstract
The resonant excitation of neutron star (NS) modes by tides is investigated as a source of short gamma-ray burst (sGRB) precursors. We find that the driving of a crust-core interface mode can lead to shattering of the NS crust, liberating ~10^46-10^47 erg of energy seconds before the merger of a NS-NS or NS-black hole binary. Such properties are consistent with Swift/BAT detections of sGRB precursors, and we use the timing of the observed precursors to place weak constraints on the crust equation of state. We describe how a larger sample of precursor detections could be used alongside coincident gravitational wave detections of the inspiral by Advanced LIGO class detectors to probe the NS structure. These two types of observations nicely complement one another, since the former constrains the equation of state and structure near the crust-core boundary, while the latter is more sensitive to the core equation of state.
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Proposes APTA with 6 satellites and 10^{-18} relative clock uncertainty at 1s averaging to achieve sensitivity for observing 10^3-10^4 solar-mass black hole mergers in the decihertz band.
citing papers explorer
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Nonlinear hydrodynamics in spinning neutron stars: Theoretical universal relations and equilibrium solutions
Affine-model hydrodynamics shows three-wave NS tidal couplings are fixed by linear Love numbers, yet omit ~1.7 rad of GW phase per star by merger; four-wave terms cannot lock f-modes.
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Artificial Precision Timing Array: bridging the decihertz gravitational-wave sensitivity gap with clock satellites
Proposes APTA with 6 satellites and 10^{-18} relative clock uncertainty at 1s averaging to achieve sensitivity for observing 10^3-10^4 solar-mass black hole mergers in the decihertz band.