TRUST I: A 3D externally illuminated slab benchmark for dust radiative transfer

TRUST I数据集是由空间望远镜科学研究所和多个天文观测机构合作创建的，用于模拟尘埃辐射传输的3D外部照射平板基准。该数据集包含多种尘埃光学深度，从所有波长下的光学薄到大多数波长下的光学厚。数据集的创建旨在测试辐射传输问题的不同组件，包括尘埃吸收、散射和发射，并包括对全尘埃发射的解决方案，包括单光子（随机）加热以及两种简化假设：所有颗粒被认为与辐射场处于平衡状态，以及发射来自具有尺寸分布平均特性的单一有效颗粒。数据集的应用领域包括天体物理学中的尘埃辐射传输模拟，旨在解决尘埃如何吸收和重新发射紫外线至近红外光子，并在红外和亚毫米波段重新辐射吸收的能量的问题。

The TRUST I dataset was collaboratively created by the Space Telescope Science Institute and multiple astronomical observation institutions, serving as a 3D externally illuminated flat-panel benchmark for dust radiative transfer simulations. It encompasses a wide range of dust optical depths, ranging from optically thin conditions across all wavelengths to optically thick scenarios for most wavelengths. The dataset is developed to test various components of radiative transfer problems, including dust absorption, scattering, and emission, and includes solutions for complete dust emission such as single-photon (stochastic) heating, alongside two simplifying assumptions: all dust grains are assumed to be in equilibrium with the radiation field, and emission originates from a single effective grain whose properties are averaged over the grain size distribution. The application scope of this dataset includes dust radiative transfer simulations in astrophysics, which aim to resolve the problem of how dust absorbs and re-emits ultraviolet to near-infrared photons, and re-radiates the absorbed energy in the infrared and submillimeter wavelength bands.