Model-independent cosmological probes

When measuring galaxy correlation functions, one usually counts the number of galaxies per unit of angle θ and within a redshift bin around a mean redshift z. Hence to convert [θ, z] into comoving distances, as usually done, a cosmology must be assumed, inevitably introducing errors. We updated the CLASS code to compute the observable angular power spectrum for galaxies at linear order, including redshift-space distortions, lensing and relativistic terms.