SPICA/SAFARI的模拟CII观察
Simulated CII observations for SPICA/SAFARI
摘要：
我们调查的情况下，CII 158微米的观测SPICA/SAFARI使用三维磁流体动力学（MHD）模拟的扩散星际介质（ISM）和Meudon PDR代码。MHD模拟包括两个会聚的温暖的气体（10,000 K）在一个立方体盒子50 pc的长度。热不稳定性、磁场和自重力的相互作用导致在温暖、湍流的团间介质中形成寒冷、密集的团。我们采样几个团块沿视线通过模拟立方体，并使用它们作为输入密度分布在Meudon PDR代码。这使我们能够获得CII 158微米线的强度预测，并为给定天空区域的映射提供时间估计。
英文摘要：
We investigate the case of CII 158 micron observations for SPICA/SAFARI using a three-dimensional magnetohydrodynamical (MHD) simulation of the diffuse interstellar medium (ISM) and the Meudon PDR code. The MHD simulation consists of two converging flows of warm gas (10,000 K) within a cubic box 50 pc in length. The interplay of thermal instability, magnetic field and self-gravity leads to the formation of cold, dense clumps within a warm, turbulent interclump medium. We sample several clumps along a line of sight through the simulated cube and use them as input density profiles in the Meudon PDR code. This allows us to derive intensity predictions for the CII 158 micron line and provide time estimates for the mapping of a given sky area.
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