论文标题
冥王星的新电离网络和辐射传输模块
A new ionisation network and radiation transport module in PLUTO
论文作者
论文摘要
我们在磁静电（MHD）代码冥王星中引入了一个新的通用时间依赖性电离网络（IN）和一个辐射传输（RT）模块。我们的电离网络对于5E3至3E8 K的温度可靠，其中包括H，HE，HE，C，N，O，NE，MG，SI，SI，S和FE的所有电离状态，使其适合研究各种天体物理情景。使用Cloudy-17数据计算每个离子电子对的辐射损失。照片离世和电荷交换是化学加热机制。在不同频率下，IN完全耦合到非常范围的不良范围内的辐射传输模块。 RT模块采用一种假设球形对称性的短特性方法。辐射模块需要假设球形对称性，而IN与完整的3D兼容。我们还包括一个简单的处方，用于灰尘不透明度，谷物破坏以及对辐射压力的粉尘贡献。我们提出数值测试，以显示新模块的可靠性和局限性。我们还提供了一种后处理工具，用于计算投影柱密度和发射光谱。
We introduce a new general-purpose time-dependent ionisation network (IN) and a radiation transport (RT) module in the magneto-hydrodynamic (MHD) code PLUTO. Our ionisation network is reliable for temperatures ranging from 5e3 to 3e8 K, and includes all ionisation states of H, He, C, N, O, Ne, Mg, Si, S and Fe making it suitable for studying a variety of astrophysical scenarios. Radiation loss for each ion-electron pair is calculated using CLOUDY-17 data on-the-fly. Photo-ionisation and charge exchange are the chemical heating mechanisms. The IN is fully coupled to the radiation transport module over a very large range of opacities at different frequencies. The RT module employs a method of short characteristics assuming spherical symmetry. The radiation module requires the assumption of spherical symmetry, while the IN is compatible with full 3D. We also include a simple prescription for dust opacity, grain destruction, and the dust contribution to radiation pressure. We present numerical tests to show the reliability and limitations of the new modules. We also present a post-processing tool to calculate projected column densities and emission spectra.
