Testing distance duality with CMB anisotropies

Syksy Rasanen, Jussi Valiviita, Ville Kosonen

We constrain deviations of the form $T\propto (1+z{)}^{1+\epsilon }$ from the standard redshift-temperature relation, corresponding to modifying distance duality as $D_L=(1+z{)}^{2(1+\epsilon )}{D}_A$.…