Memory Effect or Cosmic String? Classifying Gravitational-Wave Bursts with Bayesian Inference
arXiv:1911.07998 · doi:10.1103/PhysRevD.102.023010
Abstract
A variety of gravitational-wave transient sources can be modeled in the Fourier domain using a power law. This simple power-law model provides a reasonable approximation for gravitational-wave bursts from cosmic string cusps, cosmic string kinks, and the memory effect. Each of these sources is described using a different spectral index. In this work, we simulate interferometer strain data with injections of power-law and memory bursts to demonstrate parameter estimation, signal detection, and model selection. We show how Bayesian inference can be used to measure the power-law spectral index, thereby distinguishing between different astrophysical scenarios.
arXiv comment7 pages, 4 figures
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