Simulating Short Gamma-Ray Burst Jets in Realistic Late Binary Neutron Star Merger Environments
The electromagnetic emission and the afterglow observations of the binary neutron star merger event GW170817A confirmed the association of the merger with a short gamma-ray burst (GRB) harboring a narrow (5°–10°) and powerful (10 ^49 –10 ^50 erg) jet. Using the 1 s long neutrino-radiation general re...
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| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad7d04 |
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| author | Matteo Pais Tsvi Piran Kenta Kiuchi Masaru Shibata |
| author_facet | Matteo Pais Tsvi Piran Kenta Kiuchi Masaru Shibata |
| author_sort | Matteo Pais |
| collection | DOAJ |
| description | The electromagnetic emission and the afterglow observations of the binary neutron star merger event GW170817A confirmed the association of the merger with a short gamma-ray burst (GRB) harboring a narrow (5°–10°) and powerful (10 ^49 –10 ^50 erg) jet. Using the 1 s long neutrino-radiation general relativistic MHD simulation of coalescing neutron stars of K. Kiuchi et al., and following the semi-analytical estimates of M. Pais et al., we inject a narrow, powerful, unmagnetized jet into the post-merger phase. We explore different opening angles, luminosities, central engine durations, and times after the merger. We explore early (0.1 s following the merger) and late (1 s) jet launches; the latter is consistent with the time delay of ≈1.74 s observed between GW170817 and GRB 170817A. We demonstrate that the semi-analytical estimates correctly predict the jets’ breakout and collimation conditions. When comparing our synthetic afterglow light curves to the observed radio data of GW170807, we find a good agreement for a 3 × 10 ^49 erg jet launched late with an opening angle in the range ≃5°–7°. |
| format | Article |
| id | doaj-art-a5b6a8e75c334608a70adb82c3b8082b |
| institution | OA Journals |
| issn | 1538-4357 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-a5b6a8e75c334608a70adb82c3b8082b2025-08-20T02:15:37ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-0197613510.3847/1538-4357/ad7d04Simulating Short Gamma-Ray Burst Jets in Realistic Late Binary Neutron Star Merger EnvironmentsMatteo Pais0https://orcid.org/0000-0002-4243-3889Tsvi Piran1https://orcid.org/0000-0002-7964-5420Kenta Kiuchi2https://orcid.org/0000-0003-4988-1438Masaru Shibata3https://orcid.org/0000-0002-4979-5671Racah Institute for Physics, The Hebrew University , Jerusalem 91904, Israel; INAF, Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122, Padova, ItalyRacah Institute for Physics, The Hebrew University , Jerusalem 91904, IsraelMax Planck Institute for Gravitational Physics (Albert Einstein Institute) , Am Mühlenberg 1, 14476, Potsdam-Golm, Germany; Center for Gravitational Physics and Quantum Information, Yukawa Institute for Theoretical Physics, Kyoto University , 606-8502, Kyoto, JapanMax Planck Institute for Gravitational Physics (Albert Einstein Institute) , Am Mühlenberg 1, 14476, Potsdam-Golm, Germany; Center for Gravitational Physics and Quantum Information, Yukawa Institute for Theoretical Physics, Kyoto University , 606-8502, Kyoto, JapanThe electromagnetic emission and the afterglow observations of the binary neutron star merger event GW170817A confirmed the association of the merger with a short gamma-ray burst (GRB) harboring a narrow (5°–10°) and powerful (10 ^49 –10 ^50 erg) jet. Using the 1 s long neutrino-radiation general relativistic MHD simulation of coalescing neutron stars of K. Kiuchi et al., and following the semi-analytical estimates of M. Pais et al., we inject a narrow, powerful, unmagnetized jet into the post-merger phase. We explore different opening angles, luminosities, central engine durations, and times after the merger. We explore early (0.1 s following the merger) and late (1 s) jet launches; the latter is consistent with the time delay of ≈1.74 s observed between GW170817 and GRB 170817A. We demonstrate that the semi-analytical estimates correctly predict the jets’ breakout and collimation conditions. When comparing our synthetic afterglow light curves to the observed radio data of GW170807, we find a good agreement for a 3 × 10 ^49 erg jet launched late with an opening angle in the range ≃5°–7°.https://doi.org/10.3847/1538-4357/ad7d04Gamma-ray burstsNeutron starsRelativistic jetsHydrodynamical simulations |
| spellingShingle | Matteo Pais Tsvi Piran Kenta Kiuchi Masaru Shibata Simulating Short Gamma-Ray Burst Jets in Realistic Late Binary Neutron Star Merger Environments The Astrophysical Journal Gamma-ray bursts Neutron stars Relativistic jets Hydrodynamical simulations |
| title | Simulating Short Gamma-Ray Burst Jets in Realistic Late Binary Neutron Star Merger Environments |
| title_full | Simulating Short Gamma-Ray Burst Jets in Realistic Late Binary Neutron Star Merger Environments |
| title_fullStr | Simulating Short Gamma-Ray Burst Jets in Realistic Late Binary Neutron Star Merger Environments |
| title_full_unstemmed | Simulating Short Gamma-Ray Burst Jets in Realistic Late Binary Neutron Star Merger Environments |
| title_short | Simulating Short Gamma-Ray Burst Jets in Realistic Late Binary Neutron Star Merger Environments |
| title_sort | simulating short gamma ray burst jets in realistic late binary neutron star merger environments |
| topic | Gamma-ray bursts Neutron stars Relativistic jets Hydrodynamical simulations |
| url | https://doi.org/10.3847/1538-4357/ad7d04 |
| work_keys_str_mv | AT matteopais simulatingshortgammarayburstjetsinrealisticlatebinaryneutronstarmergerenvironments AT tsvipiran simulatingshortgammarayburstjetsinrealisticlatebinaryneutronstarmergerenvironments AT kentakiuchi simulatingshortgammarayburstjetsinrealisticlatebinaryneutronstarmergerenvironments AT masarushibata simulatingshortgammarayburstjetsinrealisticlatebinaryneutronstarmergerenvironments |