Search for a Scalar Induced Stochastic Gravitational Wave Background in the Third LIGO-Virgo Observing Run.

  title={Search for a Scalar Induced Stochastic Gravitational Wave Background in the Third LIGO-Virgo Observing Run.},
  author={Alba Romero-Rodr{\'i}guez and Miguel {\'A}ngel Mart{\'i}nez and Oriol Pujol{\`a}s and Mairi Sakellariadou and Ville Vaskonen},
  journal={Physical review letters},
  volume={128 5},
The formation of primordial black holes from inflationary fluctuations is accompanied by a scalar induced gravitational wave background. We perform a Bayesian search of such background in the data from Advanced LIGO and Virgo's first, second, and third observing runs, parametrizing the peak in the curvature power spectrum by a log-normal distribution. The search shows no evidence for such a background. We place 95% confidence level upper limits on the integrated power of the curvature power… 

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