Getting around Cosmic Variance of the CMB Temperature Quadrupole

Details Getting around Cosmic Variance of the CMB Temperature Quadrupole Getting around Cosmic Variance of the CMB Temperature Quadrupole

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pasc.conf...53s&link_type=abstract

PASCOS 2004 Part I: Particles, Strings and Cosmology* Part II: Themes in Unification -- The Pran Nath Festschrift†. *,†Proceedin

Physics

Scientific paper

I present a new method for inferring the Cosmic Microwave Background(CMB) temperature quadrupole with accuracy better than cosmic variance. The method relies on measurements of the large angle CMB polarisation spectrum generated by a reionization epoch, exploiting the fact that CMB polarisation is sourced by the local quadrupole. It is generic enough and can be used to explicitly distinguish models that generate a low quadrupole from those that don't.

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