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Abstract
We show how standard Newtonian N-body simulations can be interpreted in terms of the weak-field limit of general relativity by employing the recently developed Newtonian motion gauge. Our framework allows the inclusion of radiation perturbations and the non-linear evolution of matter. We show how to construct the weak-field metric by combining Newtonian simulations with results from Einstein-Boltzmann codes. We discuss observational effects on weak lensing and ray tracing, identifying important relativistic corrections.
Original language | English |
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Article number | 022 |
Journal | Journal of Cosmology and Astroparticle Physics |
Volume | 12 |
DOIs | |
Publication status | Published - 11 Dec 2017 |
Keywords
- astro-ph.CO
- RCUK
- STFC
- ST/N000668/1
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