Bonvin C., Clarkson C., Durrer R., Maartens R., Umeh O.
CERN, Theory Division, Geneva, Switzerland; Astrophysics, Cosmology and Gravity Centre, Department of Mathematics and Applied Mathematics, University of Cape Town, Cape Town, South Africa; Département de Physique Théorique, Center for Astroparticle Physics, Université de Genève, Quai E. Ansermet 24, Genève 4, Switzerland; Physics Department, University of the Western Cape, Cape Town, South Africa; Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, United Kingdom
Bonvin, C., CERN, Theory Division, Geneva, Switzerland; Clarkson, C., Astrophysics, Cosmology and Gravity Centre, Department of Mathematics and Applied Mathematics, University of Cape Town, Cape Town, South Africa; Durrer, R., Département de Physique Théorique, Center for Astroparticle Physics, Université de Genève, Quai E. Ansermet 24, Genève 4, Switzerland; Maartens, R., Physics Department, University of the Western Cape, Cape Town, South Africa, Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, United Kingdom; Umeh, O., Physics Department, University of the Western Cape, Cape Town, South Africa
It has recently been shown that second-order corrections to the background distance-redshift relation can build up significantly at large redshifts, due to an aggregation of gravitational lensing events. This shifts the expectation value of the distance to the CMB by 1%. In this paper we show that this shift is already properly accounted for in standard CMB analyses. We clarify the role that the area distance to the CMB plays in the presence of second-order lensing corrections. © 2015 IOP Publishing Ltd and Sissa Medialab srl .