Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger
نویسندگان
چکیده
منابع مشابه
r-Process Nucleosynthesis in Black Hole - Neutron Star Mergers
Compact object mergers have long been speculated to be a possible site of r-process nucleosynthesis. While most attention has been focused on the cold decompression of neutron star matter ejected from the merger, other sites within the merger likely contribute to its nucleosynthetic output. Here we consider hot outflows from the accretion disk that forms around the black hole following a black ...
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We investigate the nucleosynthesis of heavy elements in the winds ejected by accretion discs formed in neutron star mergers. We compute the element formation in disc outflows from hypermassive neutron star (HMNS) remnants of variable lifetime, including the effect of angular momentum transport in the disc evolution. We employ long-term axisymmetric hydrodynamic disc simulations to model the eje...
متن کاملSignatures of hypermassive neutron star lifetimes on r-process nucleosynthesis in the disk ejecta from neutron star mergers
We investigate the nucleosynthesis of heavy elements in the winds ejected by accretion disks formed in neutron star mergers. We compute the element formation in disk outflows from hypermassive neutron star (HMNS) remnants of variable lifetime, including the effect of angular momentum transport in the disk evolution. We employ long-term axisymmetric hydrodynamic disk simulations to model the eje...
متن کاملr-Process Nucleosynthesis in Hot Accretion Disk Flows from Black Hole - Neutron Star Mergers
We consider hot accretion disk outflows from black hole neutron star mergers in the context of the nucleosynthesis they produce. We begin with a three dimensional numerical model of a black hole neutron star merger and calculate the neutrino and antineutrino fluxes emitted from the resulting accretion disk. We then follow the element synthesis in material outflowing the disk along parameterized...
متن کاملOn the dynamics of proto-neutron star winds and r-process nucleosynthesis
We study here the formation of heavy r-process nuclei in the high-entropy environment of rapidly expanding neutrinodriven winds from compact objects. In particular, we explore the sensitivity of the element creation in the A >∼ 130 region to the low-temperature behavior of the outflows. For this purpose we employ a simplified model of the dynamics and of the thermodynamical evolution for radiat...
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ژورنال
عنوان ژورنال: Nature
سال: 2017
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature24298