GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS |
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Test of the Cosmic Transparency with the Baryon Acoustic Oscillation and Type Ia Supernova Data |
He-Kun Li, Pu-Xun Wu**, Hong-Wei Yu |
Center of Nonlinear Science and Department of Physics, Ningbo University, Ningbo 315211
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Cite this article: |
He-Kun Li, Pu-Xun Wu, Hong-Wei Yu 2016 Chin. Phys. Lett. 33 059801 |
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Abstract We use the latest baryon acoustic oscillation and Union 2.1 type Ia supernova data to test the cosmic opacity between different redshift regions without assuming any cosmological models. It is found that the universe may be opaque between the redshift regions 0.35–0.44, 0.44–0.57 and 0.6–0.73 since the best fit values of cosmic opacity in these regions are positive, while a transparent universe is favored in the redshift region 0.57–0.63. However, in general, a transparent universe is still consistent with observations at the $1\sigma$ confidence level.
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Received: 07 January 2016
Published: 31 May 2016
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