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- W4286236414 abstract "Neutron star mergers have recently become a tool to study extreme gravity, nucleosynthesis, and the chemical composition of the Universe. To date, there has been one joint gravitational and electromagnetic observation of a binary neutron star merger, GW170817, as well as a solely gravitational observation, GW190425. In order to accurately identify and interpret electromagnetic signals of neutron star mergers, better models of the matter outflows generated by these mergers are required. We compare a series of ejecta models to see where they provide strong constraints on the amount of ejected mass expected from a system, and where systematic uncertainties in current models prevent us from reliably extracting information from observed events. We also examine 2396 neutron star equations of state compatible with GW170817 to see whether a given ejecta mass could be reasonably produced with a neutron star of said equation of state, and whether different ejecta models provide consistent predictions. We find that the difference between models is often comparable to or larger than the error generally assumed for these models, implying better constraints on the models are needed. We also note that the extrapolation of outflow models outside of their calibration window, while commonly needed to analyze gravitational wave events, is extremely unreliable and occasionally leads to completely unphysical results." @default.
- W4286236414 created "2022-07-21" @default.
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- W4286236414 date "2022-07-15" @default.
- W4286236414 modified "2023-10-18" @default.
- W4286236414 title "A study of the agreement between binary neutron star ejecta models derived from numerical relativity simulations" @default.
- W4286236414 doi "https://doi.org/10.48550/arxiv.2207.07658" @default.
- W4286236414 hasPublicationYear "2022" @default.
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