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Hyperon bulk viscosity effects in neutron-star inspirals
Abstract
The paper revisits the role of hyperon bulk viscosity during neutron-star inspiral. We find that hyperon bulk viscosity exerts only a minor influence on the gravitational-wave phase, causing a phase shift of ∼ 10−3 rad. This shift is too small to be detected by existing gravitational-wave observatories, and it seems unlikely that next-generation detectors will be able to isolate this effect from other factors. However, our analysis indicates that hyperon bulk viscosity can significantly heat the hyperon core of a neutron star, raising its temperature to approximately 5 × 108 K.
Related
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BibTeX
@misc{kantor2026hyperon,
title = {{Hyperon bulk viscosity effects in neutron-star inspirals}},
author = {Elena M. Kantor and Mikhail E. Gusakov and Kirill Y. Kraav},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.28000},
eprint = {2608.28000},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.28000},
}
RIS
TY - UNPB
TI - Hyperon bulk viscosity effects in neutron-star inspirals
AU - Elena M. Kantor
AU - Mikhail E. Gusakov
AU - Kirill Y. Kraav
PY - 2026
DA - 2026/08/28
PB - arXiv
DO - 10.48550/arxiv.2608.28000
UR - https://arxiv.org/abs/2608.28000
AB - The paper revisits the role of hyperon bulk viscosity during neutron-star inspiral. We find that hyperon bulk viscosity exerts only a minor influence on the gravitational-wave phase, causing a phase shift of ∼ 10^−3 rad. This shift is too small to be detected by existing gravitational-wave observatories, and it seems unlikely that next-generation detectors will be able to isolate this effect from other factors. However, our analysis indicates that hyperon bulk viscosity can significantly heat the hyperon core of a neutron star, raising its temperature to approximately 5 × 10^8 K.
ER -