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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2012.10174astro-ph.HEgr-qc
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Spritz:广义相对论磁流体力学与中微子

Spritz: General Relativistic Magnetohydrodynamics with Neutrinos

Federico Cipolletta, Jay Vijay Kalinani, Edoardo Giangrandi, Bruno Giacomazzo, Riccardo Ciolfi, Lorenzo Sala, Beatrice Giudici

摘要:

我们在这里提出了一个新版本的公开可用的广义相对论磁流体动力学(GRMHD)代码$\texttt{Spritz}$,其中现在包括一个近似的中微子泄漏计划能够处理中微子冷却和加热。泄漏方案基于公开可用的$\texttt{ZelmaniLeak}$代码,并进行了一些修改,以便与$\texttt{Spritz}$一起正常工作。我们讨论了所涉及的方程,物理假设,实现的数值方法,以及一个大电池的广义相对论测试进行和没有磁场。我们的测试表明正确的中微子泄漏计划的实施,铺平了道路,为进一步改进我们的中微子治疗和磁化的二元中子星合并的第一个应用。我们还讨论了实施中的$\texttt{Spritz}$代码的高阶方法更准确的演变的流体力学量。

英文摘要:

We here present a new version of the publicly available general relativistic magnetohydrodynamic (GRMHD) code $\texttt{Spritz}$, which now includes an approximate neutrino leakage scheme able to handle neutrino cooling and heating. The leakage scheme is based on the publicly available $\texttt{ZelmaniLeak}$ code, with a few modifications in order to properly work with $\texttt{Spritz}$. We discuss the involved equations, physical assumptions, and implemented numerical methods, along with a large battery of general relativistic tests performed with and without magnetic fields. Our tests demonstrate the correct implementation of the neutrino leakage scheme, paving the way for further improvements of our neutrino treatment and the first application to magnetized binary neutron star mergers. We also discuss the implementation in the $\texttt{Spritz}$ code of high-order methods for a more accurate evolution of hydrodynamical quantities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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