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2017

General relativistic weak-field limit and Newtonian N-body simulations

Fidler, Christian, Tram, Thomas, Rampf, Cornelius et al.

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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.

General relativistic weak-field limit and Newtonian N-body simulations · Around

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