Galactic dust absorption maps

This dataset contains the 3D structure of interstelllar dust in the vicinity of the Sun, as well as its logarithmic spatial correlation power spectrum. It was computed from Gaia absorption data using Gaussian process regression. The simple_cube contains only mean and standard deviation while the full_cube contains 50 approximate posterior samples. The corresponding paper is available on arxiv:1901.05971 In this version the documentation was corrected. The coordinate system does not have the half-pixel shift that is described in the previous data set versions, leading to an exactly centered box. Additionally, the description of the relation of power spectrum and dust realization was extended to include the a-priori mean of 0.001 e-folds of absorption per parsec.<br> The numerical content of the data set is identical to version 1.1本数据集包含太阳附近星际尘埃的三维结构，及其对数空间相关功率谱。该数据集通过高斯过程回归（Gaussian process regression）对盖亚（Gaia）卫星的吸收数据计算得到。 simple_cube仅包含均值与标准差，而full_cube则包含50个近似后验样本。 相关论文可在arXiv上获取，编号为1901.05971。 本版本对文档进行了修正。本版本移除了此前数据集版本中描述的半像素偏移，使箱体完全居中。此外，本次更新扩充了功率谱与尘埃分布实例之间关系的说明，补充了每秒差距吸收量为0.001 e折的先验均值内容。 本数据集的数值内容与1.1版本完全一致。