LIGER: mock relativistic light-cones from Newtonian simulations

Understand

We introduce a method to create mock galaxy catalogues in redshift space including general relativistic effects to linear order in the cosmological perturbations.

• We dub our method LIGER, short for `light cones with general relativity'.
• LIGER takes a (N-body or hydrodynamic) Newtonian simulation as an input and outputs the distribution of galaxies in comoving redshift space.
• This result is achieved making use of a coordinate transformation and simultaneously accounting for lensing magnification.