标题： 恒星大气中三维非局部热平衡辐射转移的水平方向等离子体不均匀性的影响 显示英文标题

标题： The effect of horizontal plasma inhomogeneities in 3D NLTE radiation transfer in stellar atmospheres

摘要： {我们旨在展示大气非均匀性对光谱线辐射的发射比辐亮度和辐射通量的影响。} {我们用笛卡尔网格自洽地求解三维大气中两能级原子的非局部热平衡问题。为此，我们使用了三维辐射传输代码PORTA。通过检查简单的例子，我们研究了大气模型中的温度不均匀性导致出射辐射发生变化的情况。} {我们表明模型大气中的特定温度不均匀性会影响发射的辐射，并且基于平面平行大气模型对恒星光谱的解释可能导致关于大气结构的错误结论。} 显示英文摘要

摘要： {We aim to demonstrate the effect of atmospheric inhomogeneities on the emergent specific intensity and radiation flux of a spectral line radiation.} {We self-consistently solve the NLTE problem for a two-level atom in a 3D atmosphere using the Cartesian grid. For that purpose, we use the 3D radiative transfer code PORTA. By examining simple examples, we study cases where the temperature inhomogeneities in the atmosphere models lead to the modification of the emergent radiation.} {We show that specific temperature inhomogeneities in the model atmospheres influence the emerging radiation, and that interpretation of the stellar spectra based on a plane-parallel atmosphere models can lead to erroneous conclusions about the atmospheric structure.}