论文标题
与中微子的中子星的磁化合并的大型涡流模拟
Large Eddy Simulations of Magnetized Mergers of Neutron Stars with Neutrinos
论文作者
论文摘要
中子星合并是涉及极端物理过程的非常暴力的事件：动态，强场重力，大磁场，非常热，密集的物质以及中微子的大量产生。对这种系统及其相关的多门传递信号的准确建模，例如重力波，短伽玛射线爆发和Kilonova，都需要包含所有这些过程，并且鉴于通常在重力天文学的进步，以及在引力天文学中的发展，尤其是在三级生长的发展中，越来越重要（例如，第三章的发展）。几个一般的相对论代码已将其中一些与现实主义不同的要素结合在一起。在这里，我们扩展了代码MHDUET，可以对磁性水力动力学进行大型涡流模拟，以帮助捕获合并期间的磁场放大，并通过泄漏方案进行现实的状态和中微子冷却。我们执行涉及孤立和二进制中子星的几个测试，证明了代码的准确性。
Neutron star mergers are very violent events involving extreme physical processes: dynamic, strong-field gravity, large magnetic field, very hot, dense matter, and the copious production of neutrinos. Accurate modeling of such a system and its associated multi-messenger signals, such as gravitational waves, short gamma ray burst, and kilonova, requires the inclusion of all these processes, and is increasingly important in light of advancements in multi-messenger astronomy generally, and in gravitational wave astronomy in particular (such as the development of third-generation detectors). Several general relativistic codes have been incorporating some of these elements with different levels of realism. Here, we extend our code MHDuet, which can perform large eddy simulations of magnetohydrodynamics to help capture the magnetic field amplification during the merger, and to allow for realistic equations of state and neutrino cooling via a leakage scheme. We perform several tests involving isolated and binary neutron stars demonstrating the accuracy of the code.
