FIRTEZ-dz：几何尺度下塞曼区偏振辐射转移方程的正、逆求解器
FIRTEZ-dz: A Forward and Inverse solver of the polarized Radiative Transfer Equation under Zeeman regime in geometrical scale
摘要：
本文给出了一个数值计算程序，在几何尺度上求解了塞曼区偏振辐射转移方程的正、反问题。该代码是完全并行化的，使其能够轻松处理大型观察和模拟数据集。通过不同的算例验证了正、逆模型的可靠性。特别是，我们表明，即使适当推断各种物理参数（温度，磁场组件，和视线速度）在光学深度，其可靠性的高度尺度取决于准确性与气体压力或密度是已知的。该代码是公开的，作为一种工具来解决辐射转移方程，并执行逆解处理每个像素独立。这个代码的一个重要特点，将在未来开发，是在几何尺度上工作允许直接计算空间导数，这通常是需要的，以估计气体压力和/或密度通过在三维体积中的动量方程，特别是三维洛伦兹力。
英文摘要：
We present a numerical code that solves the forward and inverse problem of the polarized radiative transfer equation in geometrical scale under the Zeeman regime. The code is fully parallelized, making it able to easily handle large observational and simulated datasets. We checked the reliability of the forward and inverse modules through different examples. In particular, we show that even when properly inferring various physical parameters (temperature, magnetic field components, and line-of-sight velocity) in optical depth, their reliability in height-scale depends on the accuracy with which the gas-pressure or density are known. The code is made publicly available as a tool to solve the radiative transfer equation and perform the inverse solution treating each pixel independently. An important feature of this code, that will be exploited in the future, is that working in geometrical-scale allows for the direct calculation of spatial derivatives, which are usually required in order to estimate the gas pressure and/or density via the momentum equation in a three-dimensional volume, in particular the three-dimensional Lorenz force.
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