论文标题
对流和磁场在中微子驱动的超新星爆炸的3D模拟
A 3D Simulation of a Neutrino-Driven Supernova Explosion Aided By Convection and Magnetic Fields
论文作者
论文摘要
我们使用3D中微子磁性水力动力学模拟了$ 15 m_ \ odot $祖细胞的3D中微子磁性水力学模拟，研究了小规模发电机在核心爆发超新星中的影响。一旦发展为中微子驱动的对流，弱种子场就会在增益区域中呈指数扩增，并且仍然由小规模结构主导。弹跳后，大约$ 250 \，\ mathrm {MS} $，增益区域中的现场能量达到$ \ MATHORD {\ sim} 50 \％$ $ $。这支持了中微子驱动的爆炸的开发，该爆炸具有适中的全局各向异性，在没有磁场的相应模型中不会发生。我们的结果表明，即使没有快速祖细胞旋转，磁场也可能在中微子驱动的超新星中起有益的子公司作用。需要进一步研究超新星核中磁流失动力湍流的性质。
We study the impact of a small-scale dynamo in core-collapse supernovae using a 3D neutrino magnetohydrodynamics simulation of a $15 M_\odot$ progenitor. The weak seed field is amplified exponentially in the gain region once neutrino-driven convection develops, and remains dominated by small-scale structures. About $250\, \mathrm{ms}$ after bounce, the field energy in the gain region reaches $\mathord{\sim} 50\%$ of kinetic equipartition. This supports the development of a neutrino-driven explosion with modest global anisotropy, which does not occur in a corresponding model without magnetic fields. Our results suggest that magnetic fields may play a beneficial subsidiary role in neutrino-driven supernovae even without rapid progenitor rotation. Further investigation into the nature of magnetohydrodynamic turbulence in the supernova core is required.
