Tight Bound on the Neutron Star Radius with Quasiperiodic Oscillations in Short Gamma-Ray Bursts
Quasiperiodic oscillations (QPOs) have been recently discovered in the short gamma-ray bursts (GRBs) 910711 and 931101B. Their frequencies are consistent with those of the quasiradial and quadrupolar oscillations of binary neutron star (BNS) merger remnants, as obtained in numerical relativity simul...
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/adc101 |
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| author | Victor Guedes David Radice Cecilia Chirenti Kent Yagi |
| author_facet | Victor Guedes David Radice Cecilia Chirenti Kent Yagi |
| author_sort | Victor Guedes |
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| description | Quasiperiodic oscillations (QPOs) have been recently discovered in the short gamma-ray bursts (GRBs) 910711 and 931101B. Their frequencies are consistent with those of the quasiradial and quadrupolar oscillations of binary neutron star (BNS) merger remnants, as obtained in numerical relativity simulations. These simulations reveal quasi-universal relations between the remnant oscillation frequencies and the tidal coupling constant of the binaries. Under the assumption that the observed QPOs are due to these postmerger oscillations, we use the frequency–tide relations in a Bayesian framework to infer the source redshift, as well as the chirp mass and the binary tidal deformability of the BNS progenitors for GRBs 910711 and 931101B. We further use this inference to estimate bounds on the mass–radius relation for neutron stars. By combining the estimates from the two GRBs, we find a 68% credible range ${R}_{1.4}=12.4{8}_{-0.40}^{+0.41}$ km for the radius of a neutron star with mass M = 1.4 M _⊙ , which is one of the tightest bounds to date. |
| format | Article |
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| institution | OA Journals |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-dbabaa71eba34140b41ea33cbee2bcd52025-08-20T02:16:55ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198328810.3847/1538-4357/adc101Tight Bound on the Neutron Star Radius with Quasiperiodic Oscillations in Short Gamma-Ray BurstsVictor Guedes0David Radice1https://orcid.org/0000-0001-6982-1008Cecilia Chirenti2https://orcid.org/0000-0003-2759-1368Kent Yagi3https://orcid.org/0000-0002-0642-5363Department of Physics, University of Virginia , Charlottesville, VA 22904, USA ; tpx5df@virginia.eduInstitute for Gravitation & the Cosmos, The Pennsylvania State University , University Park, PA 16802, USA; Department of Physics, The Pennsylvania State University , University Park, PA 16802, USA; Department of Astronomy & Astrophysics, The Pennsylvania State University , University Park, PA 16802, USADepartment of Astronomy, University of Maryland , College Park, MD 20742, USA; Astroparticle Physics Laboratory , NASA/GSFC, Greenbelt, MD 20771, USA; Center for Research and Exploration in Space Science and Technology , NASA/GSFC, Greenbelt, MD 20771, USA; Center for Mathematics, Computation, and Cognition, UFABC , Santo André, SP 09210-170, BrazilDepartment of Physics, University of Virginia , Charlottesville, VA 22904, USA ; tpx5df@virginia.eduQuasiperiodic oscillations (QPOs) have been recently discovered in the short gamma-ray bursts (GRBs) 910711 and 931101B. Their frequencies are consistent with those of the quasiradial and quadrupolar oscillations of binary neutron star (BNS) merger remnants, as obtained in numerical relativity simulations. These simulations reveal quasi-universal relations between the remnant oscillation frequencies and the tidal coupling constant of the binaries. Under the assumption that the observed QPOs are due to these postmerger oscillations, we use the frequency–tide relations in a Bayesian framework to infer the source redshift, as well as the chirp mass and the binary tidal deformability of the BNS progenitors for GRBs 910711 and 931101B. We further use this inference to estimate bounds on the mass–radius relation for neutron stars. By combining the estimates from the two GRBs, we find a 68% credible range ${R}_{1.4}=12.4{8}_{-0.40}^{+0.41}$ km for the radius of a neutron star with mass M = 1.4 M _⊙ , which is one of the tightest bounds to date.https://doi.org/10.3847/1538-4357/adc101Gravitational wavesNeutron starsGamma-ray burstsStellar oscillations |
| spellingShingle | Victor Guedes David Radice Cecilia Chirenti Kent Yagi Tight Bound on the Neutron Star Radius with Quasiperiodic Oscillations in Short Gamma-Ray Bursts The Astrophysical Journal Gravitational waves Neutron stars Gamma-ray bursts Stellar oscillations |
| title | Tight Bound on the Neutron Star Radius with Quasiperiodic Oscillations in Short Gamma-Ray Bursts |
| title_full | Tight Bound on the Neutron Star Radius with Quasiperiodic Oscillations in Short Gamma-Ray Bursts |
| title_fullStr | Tight Bound on the Neutron Star Radius with Quasiperiodic Oscillations in Short Gamma-Ray Bursts |
| title_full_unstemmed | Tight Bound on the Neutron Star Radius with Quasiperiodic Oscillations in Short Gamma-Ray Bursts |
| title_short | Tight Bound on the Neutron Star Radius with Quasiperiodic Oscillations in Short Gamma-Ray Bursts |
| title_sort | tight bound on the neutron star radius with quasiperiodic oscillations in short gamma ray bursts |
| topic | Gravitational waves Neutron stars Gamma-ray bursts Stellar oscillations |
| url | https://doi.org/10.3847/1538-4357/adc101 |
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