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4 papers · 1 filter
Data Processing and Compression of Cosmic Microwave Background Anisotropies on Board the PLANCK Satellite
E. Gaztanaga, A. Romeo, J. Barriga +1
We present a simple way of coding and compressing the data on board the Planck instruments (HFI and LFI) to address the problem of the on board data reduction. This is a critical i…
Gravitational Evolution of the Large-Scale Probability Density Distribution: The Edgeworth & Gamma Expansions
E. Gaztanaga, P. Fosalba, E. Elizalde
The gravitational evolution of the cosmic one-point probability distribution function (PDF) has been estimated using an analytic approximation that combines gravitational perturbat…
Casimir Energies for Spherically Symmetric Cavities
Guido Cognola, Emilio Elizalde, Klaus Kirsten
A general calculation of Casimir energies --in an arbitrary number of dimensions-- for massless quantized fields in spherically symmetric cavities is carried out. All the most comm…
Averaging Einstein's Equations: The Linearized Case
William R. Stoeger, Amina Helmi, Diego F. Torres
We introduce a simple and straight-forward averaging procedure, which is a generalization of one which is commonly used in electrodynamics, and show that it possesses all the chara…