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arXiv · 2610.10728

Descalarization bursts from Galactic supramassive neutron stars: a kHz continuous-wave target

José Carlos Olvera M.·Daniela D. Doneva·Pablo Cerdá-Durán·José A. Font·Stoytcho S. Yazadjiev
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Abstract

In massive scalar-tensor gravity, a scalarized neutron star must shed its scalar hair as it collapses into a black hole. Using 3D simulations of a realistic rotating progenitor we show that dispersion stretches the emitted burst into a quasi-monochromatic signal in the kHz frequency range lasting $>10^4$ yr and amenable to continuous-wave methods. We find that detecting these signals in directed searches of supernova remnants without a central pulsar requires sensitivity depths of 233--762 $\rm{Hz^{-1/2}}$ with the A+-ET-CE detector network. We estimate up to $\sim3$ of these signals in transit at any observational epoch.

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José Carlos Olvera M., Daniela D. Doneva, Pablo Cerdá-Durán, José A. Font, Stoytcho S. Yazadjiev. 2026-10-07. Descalarization bursts from Galactic supramassive neutron stars: a kHz continuous-wave target. https://arxiv.org/abs/2610.10728

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