# Probing the speed of gravity with LVK, LISA, and joint observations

@article{Harry2022ProbingTS, title={Probing the speed of gravity with LVK, LISA, and joint observations}, author={Ian W Harry and Johannes Noller}, journal={General Relativity and Gravitation}, year={2022}, volume={54}, pages={1-34} }

Theories of dark energy that affect the speed of gravitational waves $$c_{\textrm{GW}}$$ c GW on cosmological scales naturally lead to a frequency-dependent transition of that speed close to the LIGO/Virgo/KAGRA (LVK) band. While observations such as GW170817 assure us that $$c_{\textrm{GW}}$$ c GW is extremely close to the speed of light in the LVK band, a frequency-dependent transition below the LVK band is a smoking-gun signal for large classes of dynamical dark energy theories. Here we…

## 2 Citations

### Testing gravitational wave propagation with multiband detections

- Physics
- 2022

Eﬀective ﬁeld theories (EFT) of dark energy (DE) – built to parameterise the properties of DE in an agnostic manner – are severely constrained by measurements of the propagation speed of…

## References

SHOWING 1-10 OF 129 REFERENCES

### Measuring the speed of cosmological gravitational waves.

- Physics
- 2015

In general relativity gravitational waves propagate at the speed of light, however in alternative theories of gravity that might not be the case. We study the effects of a modified speed of gravity,…

### Tests of General Relativity with GWTC-3

- Physics
- 2021

The ever-increasing number of detections of gravitational waves (GWs) from compact binaries by the Advanced LIGO and Advanced Virgo detectors allows us to perform ever-more sensitive tests of general…

### Testing gravitational wave propagation with multiband detections

- Physics
- 2022

Eﬀective ﬁeld theories (EFT) of dark energy (DE) – built to parameterise the properties of DE in an agnostic manner – are severely constrained by measurements of the propagation speed of…

### Dark Energy After GW170817: Dead Ends and the Road Ahead.

- PhysicsPhysical review letters
- 2017

The results eliminate any late-universe application of any cosmologically viable, well motivated gravity theory which predicts a variable GW speed at low redshift, and extend to any other gravity theory predicting varying c_{g} such as Einstein-Aether, Hořava gravity, Generalized Proca, tensor-vector-scalar gravity (TEVES), and other MOND-like gravities.

### Cosmological constraints on Horndeski gravity in light of GW170817

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2018

The discovery of the electromagnetic counterpart to GW170817 severely constrains the tensor mode propagation speed, eliminating a large model space of Horndeski theory. We use the cosmic microwave…

### Measuring the propagation speed of gravitational waves with LISA

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2022

The propagation speed of gravitational waves, cT , has been tightly constrained by the binary neutron star merger GW170817 and its electromagnetic counterpart, under the assumption of a…

### Tests of general relativity with binary black holes from the second LIGO-Virgo gravitational-wave transient catalog

- PhysicsPhysical Review D
- 2021

Gravitational waves enable tests of general relativity in the highly dynamical and strong-field regime. Using events detected by LIGO-Virgo up to 1 October 2019, we evaluate the consistency of the…

### Parameter estimation of stellar-mass black hole binaries with LISA

- PhysicsPhysical Review D
- 2020

Stellar-mass black hole binaries (SBHBs), like those currently being detected with the ground-based gravitational-wave (GW) observatories LIGO and Virgo, are also an anticipated GW source for LISA.…

### Generalized framework for testing gravity with gravitational-wave propagation. II. Constraints on Horndeski theory

- Physics
- 2018

Gravitational waves (GW) are generally affected by modification of a gravity theory during propagation in cosmological distance. We numerically perform a quantitative analysis on Horndeski theory at…

### Gravitational Rainbows: LIGO and Dark Energy at its Cutoff.

- PhysicsPhysical review letters
- 2018

It is shown how the operators that naturally lie at the cutoff scale can affect the speed of propagation of gravitational waves and bring it back to unity at LIGO scales in a simple model with a known partial UV completion.