Outflows from Short-Lived Neutron-Star Merger Remnants Can Produce a Blue Kilonova
N3AS-23-018
Outflows from Short-Lived Neutron-Star Merger Remnants Can Produce a Blue Kilonova
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Abstract
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. We find that the ejecta in our simulations under-produce 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.
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