Real space tomography of the primordial Universe with cluster polarization | Zendy

L. Raul Abramo | Zendy; Henrique S. Xavier | Zendy

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Real space tomography of the primordial Universe with cluster polarization

Author(s) -

L. Raul Abramo,

Henrique S. Xavier

Publication year - 2007

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology

Language(s) - English

Resource type - Journals

eISSN - 1550-7998

pISSN - 1550-2368

DOI - 10.1103/physrevd.75.101302

Subject(s) - cosmic microwave background , physics , polarization (electrochemistry) , galaxy , galaxy cluster , astrophysics , fourier transform , astronomy , optics , quantum mechanics , chemistry , anisotropy

We describe how a survey of the polarization of the cosmic microwavebackground induced by Compton scattering in galaxy clusters can be used to makea full spatial reconstruction of the primordial (z~1089) matter distributioninside our surface of last scattering. This "polarization tomography" can yielda spatial map of the initial state of the Universe just as gravitationalcollapse was beginning to drive structure formation. We present a transparentmethod and simple formulas from which one can compute the 3D primordial map inreal and in Fourier space, given a 3D map of the polarization due to galaxyclusters. The advantage of the real space reconstruction is that it is freefrom the statistical uncertainties which are inherent in the Fourier spacereconstruction. We discuss how noise, partial sky covering and depth of thesurvey can affect the results.Comment: 5 pages, RevTex, 2 figure

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