Modeling compact binary signals and instrumental glitches in gravitational wave data

Chatziioannou, Katerina; Cornish, N.; Wijngaarden, M. J. P.; Littenberg, T. B.

doi:10.1103/physrevd.103.044013

Cited by 52 publications

(64 citation statements)

References 40 publications

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“…Due to the correlations between masses and spins [138][139][140], multimodality in mass distributions may also translate to multiple peaks in the effective inspiral spin distribution. Multimodality can arise due to: the complexity of the likelihood surface when using waveform models that include higher-order multipole moments [19,[141][142][143] and precession [144,145], noise fluctuations for quiet signals [146], the presence of glitches [147][148][149], or there being multiple overlapping signals in the data (which is unlikely given O3 sensitivity) [150]. Therefore, multimodality is expected in a few cases.…”

Section: Source Propertiesmentioning

confidence: 99%

GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run

Abbott,

Acernese

et al. 2021

Preprint

440

778

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The third Gravitational-wave Transient Catalog (GWTC-3) describes signals detected with Advanced LIGO and Advanced Virgo up to the end of their third observing run. Updating the previous GWTC-2.1, we present candidate gravitational waves from compact binary coalescences during the second half of the third observing run (O3b) between 1 November 2019, 15:00 UTC and 27 March 2020, 17:00 UTC. There are 35 compact binary coalescence candidates identified by at least one of our search algorithms with a probability of astrophysical origin pastro > 0.5. Of these, 18 were previously reported as low-latency public alerts, and 17 are reported here for the first time. Based upon estimates for the component masses, our O3b candidates with pastro > 0.5 are consistent with gravitational-wave signals from binary black holes or neutron star-black hole binaries, and we identify none from binary neutron stars. However, from the gravitational-wave data alone, we are not able to measure matter effects that distinguish whether the binary components are neutron stars or black holes. The range of inferred component masses is similar to that found with previous catalogs, but the O3b candidates include the first confident observations of neutron star-black hole binaries. Including the 35 candidates from O3b in addition to those from GWTC-2.1, GWTC-3 contains 90 candidates found by our analysis with pastro > 0.5 across the first three observing runs. These observations of compact binary coalescences present an unprecedented view of the properties of black holes and neutron stars.

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Section: Source Propertiesmentioning

confidence: 99%

GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run

Abbott,

Acernese

et al. 2021

Preprint

440

778

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show abstract

“…A more restricted signal model would then assume that the tensor modes are given by regular CBC templates with some parametrized deviation from GR (such as the parametrized post-Einsteinian framework [32]), while the nontensor modes are again modeled with sine-Gaussian wavelets. The possibility of joint analyses using CBC templates and wavelets with BayesWave was recently demonstrated in [86], so we plan to explore this option in future work.…”

Section: Discussionmentioning

confidence: 99%

Morphology-independent test of the mixed polarization content of transient gravitational wave signals

et al. 2021

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Gravitational waves in general relativity contain two polarization degrees of freedom, commonly labeled plus and cross. Besides those two tensor modes, generic theories of gravity predict up to four additional polarization modes: two scalar and two vector. Detection of nontensorial modes in gravitational wave data would constitute a clean signature of physics beyond general relativity. Previous measurements have pointed to the unambiguous presence of tensor modes in gravitational waves, but the presence of additional generic nontensorial modes has not been directly tested. We propose a model-independent analysis capable of detecting and characterizing mixed tensor and nontensor components in transient gravitational wave signals, including those from compact binary coalescences. This infrastructure can constrain the presence of scalar or vector polarization modes on top of the tensor modes predicted by general relativity. Our analysis is morphology-independent (as it does not rely on a waveform templates), phase-coherent, and agnostic about the source sky location. We apply our analysis to data from GW190521 and simulated data and demonstrate that it is capable of placing upper limits on the strength of nontensorial modes when none are present, or characterizing their morphology in the case of a positive detection. Tests of the polarization content of a transient gravitational wave signal hinge on an extended detector network, wherein each detector observes a different linear combination of polarization modes. We therefore anticipate that our analysis will yield precise polarization constraints in the coming years, as the current ground-based detectors LIGO Hanford, LIGO Livingston, and Virgo are joined by KAGRA and LIGO India.

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“…But some of them are contaminated by glitches which may cause poor convergence and bias in parameter estimation as discussed in (Powell 2018;Chatziioannou et al 2021). The reconstruction and subtraction of glitches have been performed by LVK with the BayesWave algorithm (Littenberg et al 2016;.…”

Section: Appendixmentioning

confidence: 99%

Testing Lorentz Invariance of Gravity in the Standard Model Extension with GWTC-3

Niu¹,

Zhu²,

Zhang³

2022

Preprint

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Successful detections of gravitational waves have presented a new avenue to explore the nature of gravity. With the cumulating catalog of detected events, we can perform tests on General Relativity from various aspects with increasing precision. In this work, we focus on Lorentz symmetry during propagation of gravitational waves. Considering the dispersion relation in the gauge-invariant linearized gravity sector of standard-model Extension, the anisotropy, birefringence and dispersion effects will be induced during propagation of gravitational waves since the Lorentz violating modification, and cause dephasings in waveform received by detectors. With the distorted waveform, we perform full Bayesian inference with confident detections in the last gravitational wave catalog. We consider two cases associated with the lowest mass dimension d = 5, 6 which are supposed to have the most significant effects, and place the constraints on the expansion coefficients characterizing the Lorentz violating behavior which have 16 independent components for d = 5 and 18 components for d = 6. We do not find any evidence for Lorentz violation in the gravitational wave data, the constraints on the coefficients are in order of 10 −15 m for d = 5 and 10 −11 m 2 for d = 6 respectively.

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Modeling compact binary signals and instrumental glitches in gravitational wave data

Cited by 52 publications

References 40 publications

GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run

GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run

Morphology-independent test of the mixed polarization content of transient gravitational wave signals

Testing Lorentz Invariance of Gravity in the Standard Model Extension with GWTC-3

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