论文标题
来自Black Hole-Neutron Star合并磁盘的流出中的核合成与Full Gr $ν$ RMHD
Nucleosynthesis in Outflows from Black Hole-Neutron Star Merger Disks With Full GR$ν$RMHD
论文作者
论文摘要
与二进制中子恒星合并一起，黑洞和中子恒星的刺激性和合并是$ r $ $ - 过程的核合成和相关的Kilonovae的预测位置。对于正确的质量比，大量富含中子的材料可能会与合并后积聚磁盘无结合。我们模拟了四个与四个合并后磁盘的套件，并具有全传输一般相对论中微子辐射磁性流体动力学。我们发现，这些磁盘的流出非常接近可靠的$ r $ r $过程核合成的阈值条件。对于这些条件，流出的详细属性决定了是否可以或不可能发生完整的$ r $ process，这意味着可能有广泛的可观察现象。我们表明，相对于太阳能同位素模式，平均而言，磁盘流出的灯笼部分被抑制。结合动态喷射，这些流出意味着具有蓝色和红色成分的Kilonova。
Along with binary neutron star mergers, the in-spiral and merger of a black hole and a neutron star is a predicted site of $r$-process nucleosynthesis and associated kilonovae. For the right mass ratio, very large amounts of neutron rich material may become unbound from the post-merger accretion disk. We simulate a suite of four post-merger disks with full-transport general relativistic neutrino radiation magnetohydrodynamics. We find that the outflows from these disks are very close to the threshold conditions for robust $r$-process nucleosynthesis. For these conditions, the detailed properties of the outflow determine whether a full $r$-process can or cannot occur, implying that a wide range of observable phenomena are possible. We show that on average the disk outflow lanthanide fraction is suppressed relative to the solar isotopic pattern. In combination with the dynamical ejecta, these outflows imply a kilonova with both blue and red components.
