Cosmic distance duality and cosmic transparency

Abstract

We compare distance measurements obtained from two distance indicators, Super- novae observations (standard candles) and Baryon acoustic oscillation data (standard rulers). The Union2 sample of supernovae with BAO data from SDSS, 6dFGS and the latest BOSS and WiggleZ surveys is used in search for deviations from the distance duality relation. We find that the supernovae are brighter than expected from BAO measurements. The luminosity distances tend to be smaller then expected from angular diameter distance estimates as also found in earlier works on distance duality, but the trend is not statistically significant. This further constrains the cosmic transparency.

14 pages, 6 pdf figures

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• Testing the consistency between cosmological measurements of distance and age
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• Determining $H_0$ using a model-independent method
• The impact of 2D and 3D BAO measurements on the Cosmic Distance Duality Relation with HII galaxies
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