# Gravitational wave memory: A new approach to study modified gravity

@article{Du2016GravitationalWM, title={Gravitational wave memory: A new approach to study modified gravity}, author={Song Ming Du and Atsushi J. Nishizawa}, journal={Physical Review D}, year={2016}, volume={94}, pages={104063} }

It is well known that two types of gravitational wave memory exist in general relativity (GR): the linear memory and the nonlinear, or Christodoulou, memory. These effects, especially the latter, depend on the specific form of the Einstein equation. It can then be speculated that, in modified theories of gravity, the memory can differ from the GR prediction and provides novel phenomena to study these theories. We support this speculation by considering scalar-tensor theories, for which we find…

## 20 Citations

Gravitational-wave memory effects in Brans-Dicke theory: Waveforms and effects in the post-Newtonian approximation

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Gravitational-wave (GW) memory eﬀects produce permanent shifts in the GW strain and its time integrals after the passage of a burst of GWs. Their presence is closely tied to the symmetries of…

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The relation between gravitational memory effects and Bondi-Metzner-Sachs symmetries of the asymptotically flat spacetimes is studied in the scalar-tensor theory. For this purpose, the solutions to…

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- 2019

In GW150914, approximately $3M_{\odot}$ were radiated away as gravitational waves from the binary black hole system as it merged. The stress energy of the gravitational wave itself causes a nonlinear…

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- 2020

There exist gravitational memory effects in Brans-Dicke theory. They are closely related to the Bondi-Metzner-Sachs symmetries living on the null infinity in an isolated system. By studying the…

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This work constructs a surrogate model to relate binary black hole’s parameters and the GW memory, and applies this surrogate model together with Bayesian techniques to estimate theGW memory of the 48 binary black Hole events recorded in GWTC-2.

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