论文标题
具有中央电源的超新星弹射器的2D辐射流动力模拟
2D radiation-hydrodynamic simulations of supernova ejecta with a central power source
论文作者
论文摘要
我们介绍了用中央能源扩展超新星喷射的二维辐射流动力模拟的结果。正如先前的多维流体动力模拟所建议的那样，足够强大的中央能源可以吹出扩展的超新星弹出，从而有效地混合了喷射中的分层层。我们假设能量注入以嵌入喷射的中心的风星云的非热辐射形式实现。我们发现，喷射中的多维混合有助于从射流中逃脱的注射的非热辐射。当非热辐射被喷射吸收时，将其转换为明亮的热辐射，或者被消耗为超新星喷射的动能。我们发现，注射时间尺度类似于光子扩散时间尺度的中央能源实现了注入能量的有效转换为热辐射。另一方面，快速的能量注入最终会加速喷射，而不是产生明亮的热发射。这种显着的差异潜在地解释了能量超新星的多样性，包括宽衬的IC和超小型超新星。
We present the results of two-dimensional radiation-hydrodynamic simulations of expanding supernova ejecta with a central energy source. As suggested in previous multi-dimensional hydrodynamic simulations, a sufficiently powerful central energy source can blow away the expanding supernova ejecta, leading to efficient mixing of stratified layers in the ejecta. We assume that the energy injection is realized in the form of non-thermal radiation from the wind nebula embedded at the center of the ejecta. We found that the multi-dimensional mixing in the ejecta assists the injected non-thermal radiation escaping from the ejecta. When the non-thermal radiation is absorbed by the ejecta, it is converted into bright thermal radiation or is consumed as the kinetic energy of the supernova ejecta. We found that central energy sources with the injection timescale similar to the photon diffusion timescale realize an efficient conversion of the injected energy into thermal radiation. On the other hand, a rapid energy injection ends up accelerating the ejecta rather than giving rise to bright thermal emission. This remarkable difference potentially explains the diversity of energetic supernovae including broad-lined Ic and superluminous supernovae.
