On the luminosity-angular distances relation for an expanding universe

2020/03/10 by De Vicente, Juan
#FOS: Physical sciences #General Physics (physics.gen-ph)

paper · doi:10.48550/arxiv.2003.05307

Abstract

The luminosity-angular distance relation for an expanding universe is given by D_L=D_A(1+z)². This relation is commonly proven by geometrical considerations from the source point of view assuming an expanding universe. In this note, the same cosmological relation is derived from the observer point of view for the assumed expanding universe.

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