Probing neutron stars with the full premerger and postmerger gravitational wave signal from binary coalescences

Wijngaarden, M. J. P.; Chatziioannou, Katerina; Bauswein, Andreas; Clark, J. A.; Cornish, N.

doi:10.1103/physrevd.105.104019

Cited by 34 publications

(28 citation statements)

References 166 publications

(287 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[40] we extended the algorithm capabilities to include a model for CBC signals based on CBC waveform templates. The algorithm implementation is described in detail in [41][42][43]62] and we briefly summarize the most relevant features here.…”

Section: B Bayeswave Analysismentioning

confidence: 99%

Accurate modeling and mitigation of overlapping signals and glitches in gravitational-wave data

et al. 2022

Self Cite

View full text Add to dashboard Cite

The increasing sensitivity of gravitational-wave detectors has brought about an increase in the rate of astrophysical signal detections as well as the rate of "glitches"; transient and non-Gaussian detector noise. Temporal overlap of signals and glitches in the detector presents a challenge for inference analyses that typically assume the presence of only Gaussian detector noise. In this study we perform an extensive exploration of the efficacy of a recently proposed method that models the glitch with sine-Gaussian wavelets while simultaneously modeling the signal with compact-binary waveform templates. We explore a wide range of glitch families and signal morphologies and demonstrate that the joint modeling of glitches and signals (with wavelets and templates respectively) can reliably separate the two. We find that the glitches that most affect parameter estimation are also the glitches that are well modeled by such wavelets due to their compact time-frequency signature. As a further test, we investigate the robustness of this analysis against waveform systematics like those arising from the exclusion of higher-order modes and spin-precession effects. Our analysis provides an estimate of the signal parameters; the glitch waveform to be subtracted from the data and an assessment of whether some detected excess power consists of a glitch, signal, or both. We analyze the low-significance triggers (191225_215715 and 200114_020818) and find that they are both consistent with glitches overlapping high-mass signals.

show abstract

Section: B Bayeswave Analysismentioning

confidence: 99%

Accurate modeling and mitigation of overlapping signals and glitches in gravitational-wave data

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Critically, some of these constraints heavily rely on properties of the mass ejected after merger (e.g., [32][33][34][35][36][37][38]), which crucially depends on models for the post-merger evolution, including the lifetime of the remnant neutron star (see, e.g., [39][40][41] for recent reviews). Future detection of post-merger gravitational wave signals [42][43][44][45][46][47][48] have the potential for putting even more stringent constraints on the EoS [49][50][51][52][53][54][55][56][57][58].…”

Section: Introductionmentioning

confidence: 99%

Emergence of microphysical viscosity in binary neutron star post-merger dynamics

Most¹,

Haber²,

Harris³

et al. 2022

Preprint

View full text Add to dashboard Cite

In nuclear matter in neutron stars the flavor content (e.g., proton fraction) is subject to weak interactions, establishing flavor (β-)equilibrium. During the merger of two neutron stars there can be deviations from this equilibrium. By incorporating Urca processes into general-relativistic hydrodynamics simulations, we study the resulting out-of-equilibrium dynamics during the collision. We provide the first direct evidence that microphysical transport effects at late times reach a hydrodynamic regime with a nonzero bulk viscosity, making neutron star collisions intrinsically viscous. Finally, we identify signatures of this process in the post-merger gravitational wave emission.

show abstract

“…Further applications of our approach can be pursued following multiple directions, and in particular considering how constraints on nucleon dynamics would improve by joint analyses of the inspiral and of the postmerger phase, exploiting for the latter either GW oscillation modes [90][91][92], or electromagnetic counterparts emitted by the binary remnant [93]. Acknowledgments.…”

Section: Discussionmentioning

confidence: 99%

Sensitivity of Neutron Star Observations to Three-nucleon Forces

Sabatucci¹,

Benhar²,

Maselli³

et al. 2022

Preprint

View full text Add to dashboard Cite

Probing neutron stars with the full premerger and postmerger gravitational wave signal from binary coalescences

Cited by 34 publications

References 166 publications

Accurate modeling and mitigation of overlapping signals and glitches in gravitational-wave data

Accurate modeling and mitigation of overlapping signals and glitches in gravitational-wave data

Emergence of microphysical viscosity in binary neutron star post-merger dynamics

Sensitivity of Neutron Star Observations to Three-nucleon Forces

Contact Info

Product

Resources

About