Vol 16, No 11

Probing model-independent cosmic opacity and its spatial properties

Jun Chen


Abstract Cosmic opacity and its spatial distribution have been constrained with a model independent method. The average opacity of the universe is not zero, but can be zero in the 1σ error range. The best-fit value of the spatial distribution of cosmic opacity is not a constant as the redshift varies, though a homogeneous and transparent universe is favored in the 2σ error range.


Keywords cosmology: observations — cosmology: distance scale — opacity

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