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arXiv · 2408.14287

Cosmology and nuclear-physics implications of a subsolar gravitational-wave event

Francesco Crescimbeni·Gabriele Franciolini·Paolo Pani·Massimo Vaglio
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Abstract

Detecting a compact subsolar object would have profound implications in physics, the reach of which depends on the nature of the object. Here we explore such consequences for a putative subsolar-mass gravitational wave event detected by the LIGO-Virgo-KAGRA Collaboration. We forecast that the nature of a subsolar binary (made of light neutron stars, primordial black holes, or more exotic compact objects) can be inferred with a great statistical confidence level already during the ongoing fourth observing run, based on the large tidal deformability effects on the signal. The detection of a primordial black hole would have implications for cosmology and dark matter scenarios, while the measurement of the tidal deformability of a subsolar neutron star could rule out or confirm the existence of strange stars made of quarks.

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Francesco Crescimbeni, Gabriele Franciolini, Paolo Pani, Massimo Vaglio. 2024-08-26. Cosmology and nuclear-physics implications of a subsolar gravitational-wave event. https://doi.org/10.1103/physrevd.111.083538

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