REVIEW 7 cited by
Testing Approximations of Thermal Effects in Neutron Star Merger Simulations
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
We perform three-dimensional relativistic hydrodynamical calculations of neutron star mergers to assess the reliability of an approximate treatment of thermal effects in such simulations by combining an ideal-gas component with zero-temperature, micro-physical equations of state. To this end we compare the results of simulations that make this approximation to the outcome of models with a consistent treatment of thermal effects in the equation of state. In particular we focus on the implications for observable consequences of merger events like the gravitational-wave signal. It is found that the characteristic gravitational-wave oscillation frequencies of the post-merger remnant differ by about 50 to 250 Hz (corresponding to frequency shifts of 2 to 8 per cent) depending on the equation of state and the choice of the characteristic index of the ideal-gas component. In addition, the delay time to black hole collapse of the merger remnant as well as the amount of matter remaining outside the black hole after its formation are sensitive to the description of thermal effects.
Forward citations
Cited by 7 Pith papers
-
From Multimessenger Inference to Simulations: A Ranked Ensemble of Finite-Temperature Equations of State
The paper constructs a 12-member ensemble of finite-temperature neutron star equations of state that spans the posterior from multimessenger and nuclear-physics constraints and releases simulation-ready tables.
-
Post-Merger Gravitational-Wave Uncertainties of Binary Neutron Stars under Multi-Messenger EOS Constraints
With current multi-messenger EOS constraints, the post-merger peak frequency f2,mean is determined to ~100 Hz at fixed mass and tidal deformability/radius, tight enough to expose thermal or phase-transition physics.
-
The error budget of binary neutron star merger simulations for configurations with high spin
For highly spinning (chi=0.5) binary neutron stars, evolution code choice is the largest numerical waveform error, and current analytical models disagree with numerical relativity beyond that error after the stars touch.
-
High-Density Sound Speed and Post-Merger Dynamics
The slope of the high-density sound-speed curve shifts the post-merger gravitational-wave peak frequency and ejecta mass, and that peak frequency partially correlates with an integrated 'intrinsic tidal response' — bu...
-
Extending the infrastructure of the BAM code towards resistive general-relativistic magnetohydrodynamics: tests and first applications
BAM gains a validated resistive GRMHD module; BNS runs show the parallel electric field reaching up to 10% of total strength in low-density disks, unlike ideal MHD.
-
SPH methods in the modelling of compact objects
An updated expert review of Newtonian and general-relativistic SPH for compact-object mergers, arguing that modern SPH variants with better kernels, steered dissipation and reproducing gradients match grid-based codes...
-
Hyperonic degrees of freedom in binary neutron star mergers
A review of neutron star merger simulations showing that hyperonic equations of state yield distinctive gravitational wave, temperature, ejecta, and collapse-threshold signatures.
Discussion (0). Continue with ORCID to comment.