256 citations · 411 across the 5 of their papers we have counts for
8 papers · 1 filter
Component separation methods for the Planck mission
S. M. Leach, J. -F. Cardoso, C. Baccigalupi +27
The Planck satellite will map the full sky at nine frequencies from 30 to 857 GHz. The CMB intensity and polarization that are its prime targets are contaminated by foreground emis…
Maximum Likelihood algorithm for parametric component separation in CMB experiments
R. Stompor, S. Leach, F. Stivoli +1
We discuss an approach to the component separation of microwave, multi-frequency sky maps as those typically produced from Cosmic Microwave Background (CMB) Anisotropy data sets. T…
The WMAP normalization of inflationary cosmologies
Andrew R Liddle, David Parkinson, Samuel M Leach +1
We use the three-year WMAP observations to determine the normalization of the matter power spectrum in inflationary cosmologies. In this context, the quantity of interest is not th…
Measuring the primordial power spectrum: Principal component analysis of the cosmic microwave background
Samuel Leach
We implement and investigate a method for measuring departures from scale-invariance, both scale-dependent as well as scale-free, in the primordial power spectrum of density pertur…
Structure formation constraints on the Jordan-Brans-Dicke theory
Viviana Acquaviva, Carlo Baccigalupi, Samuel M. Leach +2
We use cosmic microwave background data from WMAP, ACBAR, VSA and CBI, and galaxy power spectrum data from 2dF, to constrain flat cosmologies based on the Jordan-Brans-Dicke theory…
From the production of primordial perturbations to the end of inflation
Michaël Malquarti, Samuel M. Leach, Andrew R. Liddle
In addition to generating the appropriate perturbation power spectrum, an inflationary scenario must take into account the need for inflation to end subsequently. In the context of…