论文标题
中子恒星中核面食的快速中微子冷却：分子动力学模拟
Fast neutrino cooling of nuclear pasta in neutron stars: molecular dynamics simulations
论文作者
论文摘要
快速中微子发射的直接URCA过程可能发生在中子恒星内皮中预期的非均匀核面食相。在这里，核面食中核子的周期性潜力允许对直接的URCA反应满足动量保护。我们通过建模具有大型分子动力学模拟的各种意大利面相（gnocchi，waffle，lasagna和antipaghetti）来改进早期的工作。我们发现，核面食中直接的URCA反应引起的中微子光度可能比NS核心中修改的URCA过程大的3至4个数量级。因此，来自意大利面的中微子辐射可以主导核心的辐射，这可能会显着影响中子恒星的冷却
The direct URCA process of rapid neutrino emission can occur in nonuniform nuclear pasta phases that are expected in the inner crust of neutron stars. Here, the periodic potential for a nucleon in nuclear pasta allows momentum conservation to be satisfied for direct URCA reactions. We improve on earlier work by modeling a rich variety of pasta phases (gnocchi, waffle, lasagna, and anti-spaghetti) with large-scale molecular dynamics simulations. We find that the neutrino luminosity due to direct URCA reactions in nuclear pasta can be 3 to 4 orders of magnitude larger than that from the modified URCA process in the NS core. Thus neutrino radiation from pasta could dominate radiation from the core and this could significantly impact the cooling of neutron stars
