Speaker
Dr
Sabir Ramazanov
(Universite Libre de Bruxelles)
Description
We constrain several models of the early Universe that predict statistical anisotropy of the cosmic microwave background (CMB) sky. We make use of WMAP9 and Planck maps deconvolved with beam asymmetries. As compared to previous releases of CMB data, they do not exhibit the anomalously large quadrupole of statistical anisotropy. This allows to strengthen the limits on the parameters of models established earlier in the literature. Among the others, we discuss constraints on the class of models with the Maxwellian term non-minimally coupled to the inflaton and a row of alternatives to inflation, i.e., Galilean genesis and conformal rolling scenario.
Primary authors
Dr
Grigory Rubtsov
(Institute for Nuclear Research (INR), Moscow)
Dr
Sabir Ramazanov
(Universite Libre de Bruxelles)
