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Observational constraints on Gauss-Bonnet cosmology

Benetti, Micol; Alcaniz, Jailson S.; Capozziello, Salvatore +2 more

We analyze a fully geometric approach to dark energy in the framework of F(R,𝒢) theories of gravity, where R is the Ricci curvature scalar and 𝒢 is the Gauss-Bonnet topological invariant. The latter invariant naturally exhausts, together with R, the whole curvature content related to curvature invariants coming from the Riemann tensor. In particul…

Foreground contribution to the inferred cosmological parameters from Planck

Vincent, Aaron C.; Wibig, Tadeusz; Wolfendale, Arnold W.

Previous analyses of cosmic microwave background (CMB) measurements [T. Wibig and A. W. Wolfendale, Mon. Not. R. Astron. Soc. 360 (2005) 236, arXiv:astro-ph/0409397; Mon. Not. R. Astron. Soc. 448 (2015) 1030, arXiv:1507.0677.] have revealed contamination by areas of high cosmic ray activity in the Milky Way. Here, we update studies, looking at the…