134 citations · 244 across the 10 of their papers we have counts for
Showing astro-ph.COShow all
3 papers · 1 filter
astro-ph.CO2016★ 17 cited
General quadrupolar statistical anisotropy: Planck limits
S. Ramazanov, G. Rubtsov, M. Thorsrud +1
Several early Universe scenarios predict a direction-dependent spectrum of primordial curvature perturbations. This translates into the violation of the statistical isotropy of cos…
astro-ph.CO2014★ 12 cited
Revisiting constraints on (pseudo)conformal Universe with Planck data
G. I. Rubtsov, S. R. Ramazanov
We revisit constraints on the (pseudo)conformal Universe from the non-observation of statistical anisotropy in the Planck data. The quadratic maximal likelihood estimator is applie…
astro-ph.CO2013★ 51 cited
Constraining anisotropic models of the early Universe with WMAP9 data
Sabir Ramazanov, Grigory Rubtsov
We constrain several models of the early Universe that predict a statistical anisotropy of the cosmic microwave background (CMB) sky. We make use of WMAP9 maps deconvolved with bea…