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- W2088686510 endingPage "3156" @default.
- W2088686510 startingPage "3134" @default.
- W2088686510 abstract "We present a detailed, three-dimensional hydrodynamic study of the neutrino-driven winds emerging from the remnant of a neutron star merger. Our simulations are performed with the Newtonian, Eulerian code fish, augmented by a detailed, spectral neutrino leakage scheme that accounts for neutrino absorption. Consistent with earlier two-dimensional studies, a strong baryonic wind is blown out along the original binary rotation axis within ≈100 ms. From this model, we compute a lower limit on the expelled mass of 3.5 × 10−3 M⊙, relevant for heavy element nucleosynthesis. Because of stronger neutrino irradiation, the polar regions show substantially larger electron fractions than those at lower latitudes. The polar ejecta produce interesting r-process contributions from A ≈ 80 to about 130, while the more neutron-rich, lower latitude parts produce elements up to the third r-process peak near A ≈ 195. We calculate the properties of electromagnetic transients powered by the radioactivity in the wind, in addition to the ‘macronova’ transient stemming from the dynamic ejecta. The polar regions produce ultraviolet/optical transients reaching luminosities up to 1041 erg s−1, which peak around 1 d in optical and 0.3 d in bolometric luminosity. The lower latitude regions, due to their contamination with high-opacity heavy elements, produce dimmer and more red signals, peaking after ∼2 d in optical and infrared." @default.
- W2088686510 created "2016-06-24" @default.
- W2088686510 creator A5035255047 @default.
- W2088686510 creator A5035584079 @default.
- W2088686510 creator A5036775360 @default.
- W2088686510 creator A5045714120 @default.
- W2088686510 creator A5083648204 @default.
- W2088686510 creator A5085646265 @default.
- W2088686510 creator A5086257233 @default.
- W2088686510 date "2014-08-07" @default.
- W2088686510 modified "2023-10-17" @default.
- W2088686510 title "Neutrino-driven winds from neutron star merger remnants" @default.
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