98 citations · 270 across the 5 of their papers we have counts for
4 papers · 1 filter
Measuring in the Early Universe: CMB Polarization, Reionization and the Fisher Matrix Analysis
G. Rocha, R. Trotta, C. J. A. P. Martins +4
We present a detailed analysis of present and future Cosmic Microwave Background constraints of the value of the fine-structure constant, . We carry out a more detailed analysis…
New constraints on varying
G. Rocha, R. Trotta, C. J. A. P. Martins +3
We present a summary of recent constraints on the value of the fine-structure constant at the epoch of decoupling from the recent observations made by the Wilkinson Microwave Aniso…
Measuring in the Early Universe: CMB Temperature, Large-Scale Structure and Fisher Matrix Analysis
C. J. A. P. Martins, A. Melchiorri, R. Trotta +4
We extend our recent work on the effects of a time-varying fine-structure constant in the cosmic microwave background, by providing a thorough analysis of the degeneracies betw…
The Impact of an Extra Background of Relativistic Particles on the Cosmological Parameters derived from Microwave Background Anisotropies
R. Bowen, S. H. Hansen, A. Melchiorri +2
Recent estimates of cosmological parameters derived from Cosmic Microwave Background (CMB) anisotropies are based on the assumption that we know the precise amount of energy densit…