Constraining the dark energy equation of state using Bayes theorem ...
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MNRAS 000, 1–9 (2016)
Preprint 4 July 2016
Compiled using MNRAS LATEX style file v3.0
Constraining the dark energy equation of state using Bayes theorem and the Kullback–Leibler divergence S. Hee,1,2? J.A. Vázquez,3 W.J. Handley,1,2 M.P. Hobson1 and A.N. Lasenby1,2 1 2
arXiv:1607.00270v1 [astro-ph.CO] 1 Jul 2016
3
Astrophysics Group, Battcock Centre, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, UK Kavli Institute for Cosmology Cambridge, Madingley Road, Cambridge, CB3 0HA, UK Brookhaven National Laboratory, 2 Center Road, Upton, NY 11973, USA
Last updated 2016 Jul 1; in original form 2016 July 1
ABSTRACT
Data-driven model-independent reconstructions of the dark energy equation of state w(z) are presented using Planck 2015 era CMB, BAO, SNIa and Lyman-α data. These reconstructions identify the w(z) behaviour supported by the data and show a bifurcation of the equation of state posterior in the range 1.5
