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arXiv · 2302.01240

On Nonlinear Black Hole Ringdowns from Gauge-Invariance and Measurements

Alex Kehagias·Antonio Riotto
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Abstract

It has been recently shown that nonlinear effects emerging at the time of the generation of the quasi-normal modes are necessary to model ringdowns from black hole mergers. In this note, we describe how nonlinerarities also arise when defining gauge-invariant tensor modes and in the calculation of the observable measured in the interferometers beyond linear order.

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Alex Kehagias, Antonio Riotto. 2023-02-02. On Nonlinear Black Hole Ringdowns from Gauge-Invariance and Measurements. https://arxiv.org/abs/2302.01240

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