Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue Kilonova
We present a 3D general-relativistic magnetohydrodynamic simulation of a short-lived neutron star remnant formed in the aftermath of a binary neutron star merger. The simulation uses an M1 neutrino transport scheme to track neutrino–matter interactions and is well suited to studying the resulting nu...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/2041-8213/ad0fe1 |
| _version_ | 1797351736625594368 |
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| author | Sanjana Curtis Pablo Bosch Philipp Mösta David Radice Sebastiano Bernuzzi Albino Perego Roland Haas Erik Schnetter |
| author_facet | Sanjana Curtis Pablo Bosch Philipp Mösta David Radice Sebastiano Bernuzzi Albino Perego Roland Haas Erik Schnetter |
| author_sort | Sanjana Curtis |
| collection | DOAJ |
| description | We present a 3D general-relativistic magnetohydrodynamic simulation of a short-lived neutron star remnant formed in the aftermath of a binary neutron star merger. The simulation uses an M1 neutrino transport scheme to track neutrino–matter interactions and is well suited to studying the resulting nucleosynthesis and kilonova emission. A magnetized wind is driven from the remnant and ejects neutron-rich material at a quasi-steady-state rate of 0.8 × 10 ^−1 M _⊙ s ^−1 . We find that the ejecta in our simulations underproduce r -process abundances beyond the second r -process peak. For sufficiently long-lived remnants, these outflows alone can produce blue kilonovae, including the blue kilonova component observed for AT2017gfo. |
| first_indexed | 2024-03-08T13:05:50Z |
| format | Article |
| id | doaj.art-0dac6f9413224be6abccbf2c28de7028 |
| institution | Directory Open Access Journal |
| issn | 2041-8205 |
| language | English |
| last_indexed | 2024-03-08T13:05:50Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj.art-0dac6f9413224be6abccbf2c28de70282024-01-18T18:37:01ZengIOP PublishingThe Astrophysical Journal Letters2041-82052024-01-019611L2610.3847/2041-8213/ad0fe1Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue KilonovaSanjana Curtis0https://orcid.org/0000-0002-3211-303XPablo Bosch1https://orcid.org/0000-0001-8313-2751Philipp Mösta2https://orcid.org/0000-0002-9371-1447David Radice3https://orcid.org/0000-0001-6982-1008Sebastiano Bernuzzi4https://orcid.org/0000-0002-2334-0935Albino Perego5https://orcid.org/0000-0002-0936-8237Roland Haas6https://orcid.org/0000-0003-1424-6178Erik Schnetter7https://orcid.org/0000-0002-4518-9017Department of Astronomy and Astrophysics, University of Chicago , Chicago IL 60637, USA ; sanjanacurtis@uchicago.edu; Anton Pannekoek Institute for Astronomy, Institute of High-Energy Physics, and Institute of Theoretical Physics, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands ; p.boschgomez@uva.nlAnton Pannekoek Institute for Astronomy, Institute of High-Energy Physics, and Institute of Theoretical Physics, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands ; p.boschgomez@uva.nlAnton Pannekoek Institute for Astronomy, Institute of High-Energy Physics, and Institute of Theoretical Physics, University of Amsterdam , Science Park 904, 1098 XH Amsterdam, The Netherlands ; p.boschgomez@uva.nlInstitute for Gravitation and 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, USATheoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena , D-07743 Jena, GermanyDipartimento di Fisica, Universitá di Trento , Via Sommarive 14, I-38123 Trento, Italy; NFN-TIFPA, Trento Institute for Fundamental Physics and Applications , ViaSommarive 14, I-38123 Trento, ItalyNational Center for Supercomputing Applications, University of Illinois , 1205 W Clark Street, Urbana, Illinois, USA; Department of Physics, University of Illinois , 1110 West Green Street, Urbana, Illinois, USAPerimeter Institute for Theoretical Physics , Waterloo, ON, Canada; Department of Physics and Astronomy, University of Waterloo , Waterloo, ON, Canada; Center for Computation & Technology, Louisiana State University , Baton Rouge, LA, USAWe present a 3D general-relativistic magnetohydrodynamic simulation of a short-lived neutron star remnant formed in the aftermath of a binary neutron star merger. The simulation uses an M1 neutrino transport scheme to track neutrino–matter interactions and is well suited to studying the resulting nucleosynthesis and kilonova emission. A magnetized wind is driven from the remnant and ejects neutron-rich material at a quasi-steady-state rate of 0.8 × 10 ^−1 M _⊙ s ^−1 . We find that the ejecta in our simulations underproduce r -process abundances beyond the second r -process peak. For sufficiently long-lived remnants, these outflows alone can produce blue kilonovae, including the blue kilonova component observed for AT2017gfo.https://doi.org/10.3847/2041-8213/ad0fe1Transient sourcesCompact objectsNeutron stars |
| spellingShingle | Sanjana Curtis Pablo Bosch Philipp Mösta David Radice Sebastiano Bernuzzi Albino Perego Roland Haas Erik Schnetter Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue Kilonova The Astrophysical Journal Letters Transient sources Compact objects Neutron stars |
| title | Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue Kilonova |
| title_full | Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue Kilonova |
| title_fullStr | Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue Kilonova |
| title_full_unstemmed | Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue Kilonova |
| title_short | Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue Kilonova |
| title_sort | magnetized outflows from short lived neutron star merger remnants can produce a blue kilonova |
| topic | Transient sources Compact objects Neutron stars |
| url | https://doi.org/10.3847/2041-8213/ad0fe1 |
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