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Predicting Gas in 3D Dark Matter N-body Simulations with Convolutional Neural Networks
Oral comunication

M. J. Conceição, A. Krone-Martins, A. d. Silva

Abstract
We propose a fast and accurate methodology for prediction of hydrodynamic gas distributions from Dark Matter N-body simulations. We perform fast emulations of 3D gas density cubes from the Dark Matter counterparts, comparing different Convolutional Neural Network architectures. Our method achieves an accuracy above 95% for the pixel density contrast distributions within the middle regions of the density contrast domain, and 98% accuracy in the matter power spectrum throughout the entire k domain. Moreover, our method provides a gain of 4 orders of magnitude in CPU run times compared to running the full hydrodynamic N-body simulation on a slightly newer computer system. Most importantly, our methodology provides a scalable and generalizable approach to the problem of N-body emulation, with the potential to be applied to simulations of arbitrary sizes and various scalar quantities.

2024 IEEE 20th International Conference on e-Science
Osaka, Japan
2024 September

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia