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Observational Constraints on Variable Chaplygin Gas


We investigate observational constraints on the variable Chaplygin gas model from the gold sample of type Ia supernova data and the recent measurements of the X-ray gas mass fractions in galaxy clusters. Combining these databases, we obtain a tight constraint on the two model parameters. Our results indicate that the original Chaplygin gas model is ruled out by the data at 99.7% confidence level.
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Recommended references: Zong-Kuan Guo,Yuan-Zhong Zhang.(2017).Observational Constraints on Variable Chaplygin Gas.[ChinaXiv:201709.00134] (Click&Copy)
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[V1] 2017-09-27 14:24:11 chinaXiv:201709.00134V1 Download
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