Fast flavor instability in hypermassive neutron star disk outflows
Rodrigo Fernández, Sherwood Richers, Nicole Mulyk, Steven Fahlman
Abstract
Neutron star mergers are of tremendous astrophysical interest for a variety of reasons that include their role in initiating r-process nucleosynthesis in their ejecta. In this article, the authors tackle the complex influence of extremely rapid neutrino flavor conversion (fast flavor instability - FFI) on ejecta from accretion disks around hypermassive neutron stars (HMNSs) formed in mergers. By studying a wide variety of scenarios, the authors detail the influence of FFI and show that it depends strongly on the lifetime of the HMNS.
Topics & Concepts
EjectaNeutron starPhysicsNucleosynthesisAstrophysicsAccretion (finance)r-processNeutrinoInstabilityVariety (cybernetics)Accretion discAstronomyStarsNuclear physicsSupernovaComputer scienceMechanicsArtificial intelligenceGamma-ray bursts and supernovaePulsars and Gravitational Waves ResearchNeutrino Physics Research