Fast and versatile diagnostic radiative transfer of 3-D models of the ISM

星际介质的理论/数值模型与观测之间的关键联系是辐射传输。我们用地球和太空望远镜观测到的辐射，如果没有它通常很难解释。而且ISM的数值模式不能与没有辐射传输的观测进行适当的比较。近年来，全三维数值（辐射-）（化学-）（磁-）流体动力学（RCMHD）模型已成为ISM的主流。现在需要的是一个通用的、强大的、公开可用的辐射传输包，可以用来分析ISM的全3-D自适应网格细化RCMHD模型。我已经构建了这样一个代码的beta版本：RADMC-3D。它可以执行灰尘连续介质和分子/原子线转移，具有完整的3-D AMR功能，易于使用，但非常通用。它有一个广泛的手册，我从一开始就公开了它。现在需要的是最后的开发阶段：(1)更广泛的测试，(2)实现一些更多的物理，如量子加热颗粒和完全的非lte线路传输，(3)在分布式内存机器上处理领域分解的非常大的模型的模式。

The key link between theoretical/numerical models of the interstellar medium (ISM) and observations is radiative transfer. The radiation we observe with Earth-bound and space-based telescopes is usually difficult to interpret without it. And numerical models of the ISM cannot be properly compared to observations without radiative transfer. In recent years fully 3-D numerical (radiation-)(chemo-)(magneto-)hydrodynamic (RCMHD) models of the ISM have become mainstream. What is needed now is a versatile, powerful, yet publicly available radiative transfer package that can be used to analyze fully 3-D Adaptive Mesh Refinement RCMHD models of the ISM. I have built a beta-version of such a code: RADMC-3D. It can perform dust continuum and molecular/atomic line transfer, has full 3-D AMR capabilities, is easy to use and yet is very versatile. It has an extensive manual and I have made it publicly available from the start. What is needed now is the final developing stage: (1) Much more extensive testing, (2) implementation of some more physics such as quantum-heated grains and full non-LTE line transfer and (3) a mode for handling domain-decomposed very large models on distributed memory machines.