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arXiv · 2203.07905

Detectability of the gravitational-wave background produced by magnetar giant flares

Nikolaos Kouvatsos·Paul D. Lasky·Ryan Quitzow-James·Mairi Sakellariadou
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Abstract

We study the gravitational-wave background produced by f-mode oscillations of neutron stars triggered by magnetar giant flares. For the gravitational-wave energy, we use analytic formulae obtained via general relativistic magnetohydrodynamic simulations of strongly magnetized neutron stars. Assuming the magnetar giant flare rate is proportional to the star-formation rate, we show the gravitational-wave signal is likely undetectable by third-generation detectors such as the Einstein Telescope and Cosmic Explorer. We calculate the minimum value of the magnetic field and the magnetar giant flare rate necessary for such a signal to be detectable, and discuss these in the context of our current understanding of magnetar flares throughout the Universe.

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Nikolaos Kouvatsos, Paul D. Lasky, Ryan Quitzow-James, Mairi Sakellariadou. 2023-12-29. Detectability of the gravitational-wave background produced by magnetar giant flares. https://doi.org/10.1103/physrevd.106.063007

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