Constraining the nuclear equation of state from orbits of primordial black holes inside neutron stars
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910593214054400 |
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| author | Chen, Anna DelPrado, Juan Diego Baumgarte, Thomas W. Shapiro, Stuart L. |
| author_facet | Chen, Anna DelPrado, Juan Diego Baumgarte, Thomas W. Shapiro, Stuart L. |
| contents | Lacking terrestrial experimental data, our best constraints on the behavior of matter at high densities up to and above nuclear density arise from observations of neutron stars. Current constraints include those based on measurements of stellar masses, radii, and tidal deformabilities. Here we explore how orbits of primordial black holes - should they exist - inside neutron stars could provide complementary constraints on the nuclear equation of state (EOS). Specifically, we consider a sample of candidate EOSs, construct neutron star models for these EOSs, and compute orbits of primordial black holes inside these stars. We discuss how the pericenter advance of eccentric orbits, i.e. orbital precession, results in beat phenomena in the emitted gravitational wave signal. Observing this beat frequency could constrain the nuclear EOS and break possible degeneracies arising from other constraints, as well as provide information about the host star. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04526 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Constraining the nuclear equation of state from orbits of primordial black holes inside neutron stars Chen, Anna DelPrado, Juan Diego Baumgarte, Thomas W. Shapiro, Stuart L. High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Nuclear Theory Lacking terrestrial experimental data, our best constraints on the behavior of matter at high densities up to and above nuclear density arise from observations of neutron stars. Current constraints include those based on measurements of stellar masses, radii, and tidal deformabilities. Here we explore how orbits of primordial black holes - should they exist - inside neutron stars could provide complementary constraints on the nuclear equation of state (EOS). Specifically, we consider a sample of candidate EOSs, construct neutron star models for these EOSs, and compute orbits of primordial black holes inside these stars. We discuss how the pericenter advance of eccentric orbits, i.e. orbital precession, results in beat phenomena in the emitted gravitational wave signal. Observing this beat frequency could constrain the nuclear EOS and break possible degeneracies arising from other constraints, as well as provide information about the host star. |
| title | Constraining the nuclear equation of state from orbits of primordial black holes inside neutron stars |
| topic | High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Nuclear Theory |
| url | https://arxiv.org/abs/2409.04526 |