Peculiar Velocity Reconstruction from Simulations and Observations Using Deep Learning Algorithms
Yuyu Wang,
Xiaohu Yang
Abstract:In this paper, we introduce a U-Net model of deep learning algorithms for reconstructions of the 3D peculiar velocity field, which simplifies the reconstruction process with enhanced precision. We test the adaptability of the U-Net model with simulation data under more realistic conditions, including the redshift space distortion effect and halo mass threshold. Our results show that the U-Net model outperforms the analytical method that runs under ideal conditions, with a 16% improvement in precision, 13% in r… Show more
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