Magnetized Outflows from Short-lived Neutron Star Merger Remnants Can Produce a Blue Kilonova
| Autor: | Sanjana Curtis, Pablo Bosch, Philipp Mösta, David Radice, Sebastiano Bernuzzi, Albino Perego, Roland Haas, Erik Schnetter |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | The Astrophysical Journal Letters, Vol 961, Iss 1, p L26 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2041-8213 2041-8205 |
| DOI: | 10.3847/2041-8213/ad0fe1 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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