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Variable Chaplygin Gas: Constraints from CMBR and SNe Ia | | Geetanjali Sethi
; Sushil K. Singh
; Pranav Kumar
; Deepak Jain
; Abha Dev
; | | Date: |
23 Aug 2005 | | Subject: | astro-ph | | Abstract: | We constrain the parameters of the variable Chaplygin gas model using the location of peaks of the CMBR spectrum and SNe Ia ``gold ’’ data set. Equation of state of the model is $P=-A(a)/
ho$, where $A(a)$ is a positive function of the cosmological scale factor. The variable Chaplygin gas interpolates from dust- dominated era to quintessence dominated era. The model is found to be consistent with current type Ia Supernovae data and location of first peak for $Omega_m = [0.017, 0.117]$ and $n = [-1.3, 2.6]$. | | Source: | arXiv, astro-ph/0508491 | | Services: | Forum | Review | PDF | Favorites | |
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