论文标题
将辐射性流体动力学方案纳入数值余量代码BAM
Incorporating a radiative hydrodynamics scheme in the numerical-relativity code BAM
论文作者
论文摘要
为了研究二进制中子星系并解释观测数据，例如重力波和Kilonova信号，人们需要对合并最后阶段（例如，通过数值余量模拟）进行准确描述。在这项工作中，我们提出了数值余量代码BAM的更新版本，以通过中微子泄漏方案结合基于核理论的状态方程，并简单地描述了中微子相互作用。不同的测试模拟，用于经历中微子引起的重力崩溃和二进制中子星系的恒星验证我们的新实施。对于二进制中子星系，我们表明我们可以采用不同状态方程的稳定而准确的不同微物理模型：SFHO，DD2和Hyperonic BHB $ λϕ $。总体而言，我们的测试模拟与文献中报道的模拟非常吻合。
To study binary neutron star systems and to interpret observational data such as gravitational-wave and kilonova signals, one needs an accurate description of the processes that take place during the final stages of the coalescence, e.g., through numerical-relativity simulations. In this work, we present an updated version of the numerical-relativity code BAM in order to incorporate nuclear-theory based Equations of State and a simple description of neutrino interactions through a Neutrino Leakage Scheme. Different test simulations, for stars undergoing a neutrino-induced gravitational collapse and for binary neutron stars systems, validate our new implementation. For the binary neutron stars systems, we show that we can evolve stably and accurately distinct microphysical models employing the different equations of state: SFHo, DD2, and the hyperonic BHB$Λϕ$. Overall, our test simulations have good agreement with those reported in the literature.
