| Autor: |
Espino, Pedro Luis, Hammond, Peter, Radice, David, Bernuzzi, Sebastiano, Gamba, Rossella, Zappa, Francesco, Micchi, Luis Felipe Longo, Perego, Albino |
| Rok vydání: |
2023 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| Popis: |
We study out-of-thermodynamic equilibrium effects in neutron star mergers with 3D general-relativistic neutrino-radiation large-eddy simulations. During merger, the cores of the neutron stars remain cold ($T \sim$ a few MeV) and out of thermodynamic equilibrium with trapped neutrinos originating from the hot collisional interface between the stars. However, within ${\sim}2{-}3$ milliseconds matter and neutrinos reach equilibrium everywhere in the remnant. Our results show that dissipative effects, such as bulk viscosity, if present, are only active for a short window of time after the merger. |
| Databáze: |
arXiv |
| Externí odkaz: |
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