Planck 2015 results
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Fig. 4

image

Marginalized posterior distributions of the (w0,wa) parameterization (see Sect. 5.1.1) for various data combinations. The best constraints come from the priority combination and are compatible with ΛCDM. The dashed lines indicate the point in parameter space (− 1,0) corresponding to the ΛCDM model. CMB lensing and polarization do not significantly change the constraints. Here Planck indicates Planck TT+lowP.

This figure is made of several images, please see below:

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