Perego, A. (2019) Neutrinos in neutron star mergers: Nucleosynthesis and kilonova. Il nuovo cimento C, 42 (4). pp. 1-4. ISSN 1826-9885
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Abstract
The recent detection of gravitational waves and electromagnetic signals from the merger of a binary neutron star has confirmed our basic understanding of how this catastrophic events occur. The detected kilonova signal is compatible with the radioactive decay of heavy nuclei synthesized via the rapid neutron capture process. However, the presence of an early blue component, in addition to a later redder emission, points to a non-trivial and non-homogeneous angular distribution of the properties of the ejecta powering the kilonova. Detailed, anisotropic modeling of the kilonova emission, largely based on the results of simulations of matter ejection from a binary merger including neutrinos, is able to explain the observed emission. This confirms the central role of weak interactions in determining the composition and ultimately the opacity of the expanding ejecta.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 21 Dec 2020 13:23 |
| Last Modified: | 21 Dec 2020 13:23 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20578 |
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