Hemispherical power asymmetry: parameter estimation from cosmic microwave background WMAP5 data
نویسندگان
چکیده
منابع مشابه
Cosmic microwave background power asymmetry from non-Gaussian modulation.
Non-Gaussianity in the inflationary perturbations can couple observable scales to modes of much longer wavelength (even superhorizon), leaving as a signature a large-angle modulation of the observed cosmic microwave background power spectrum. This provides an alternative origin for a power asymmetry that is otherwise often ascribed to a breaking of statistical isotropy. The non-Gaussian modulat...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2008
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2008/09/023