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Modelling non-Gaussianity from foreground contaminants

C S Carvalho1,2,3

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We introduce a general class of models for characterizing the non-Gaussian properties of foreground contaminants in the cosmic microwave background with view towards the removal of the non-primordial non-Gaussian signal from the primordial one. This is important not only for treating temperature maps but also for characterizing the nature and origin of the primordial cosmological perturbations and thus establishing a theory of the early universe.


PACS

98.70.Vc Background radiations

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

98.80.Es Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc)

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 1 (2009)



  1. Modelling non-Gaussianity from foreground contaminants

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