0902.1852v1

0902.1852v1 - arXiv:0902.1852v1 [astro-ph.CO] 11 Feb 2009...

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Unformatted text preview: arXiv:0902.1852v1 [astro-ph.CO] 11 Feb 2009 On the anomalous large-scale flows in the Universe Davor Palle Zavod za teorijsku fiziku, Institut Rugjer Boˇ skovi´ c Bijeniˇ cka cesta 54, 10001 Zagreb, Croatia (Dated: February 10, 2009) Abstract Recent combined analyses of the CMB and galaxy cluster data reveal unexpectedly large and anisotropic peculiar velocity fields at large scales. We study cosmic models with included vorticity, acceleration and total angular momentum of the Universe in order to understand the phenomenon. The Zeljdoviˇ c model is used to mimic the low redshift evolution of the angular momentum. Solving coupled evolution equations of the second kind for density-contrast in corrected Ellis-Bruni covari- ant and gauge-invariant formalism one can properly normalize and evaluate integrated Sachs-Wolfe effect and peculiar velocity field. The theoretical results compared to the observations favour a much larger matter content of the Universe than that of the concordance model. Large-scale flows appear anisotropic with dominant components placed in the plane perpendicular to the axis of vorticity (rotation). The integrated Sachs-Wolfe term has negative contribution to the CMB fluc- tuations for the negative cosmological constant and it can explain the observed small power of the CMB TT spectrum at large scales. The rate of the expansion of the Universe can be substantially affected by the angular momentum if its magnitude is large enough. PACS numbers: 98.80.Es; 12.10.Dm; 04.60.-m 1 I. INTRODUCTION AND MOTIVATION The phenomenology of particle physics, cosmology and astroparticle physics should be understood with the unique physical principles. Heavy Majorana neutrinos within the non- singular and causal SU(3) electroweak-strong unification [1] represent the main building block of the Universe as a cold dark matter (DM) particles. They are cosmologically stable τ N i >> τ U with large annihilation cross sections [2]. The H.E.S.S. source J1745-290 [3] in the center of our galaxy, WMAP haze [4] and EGRET excess of diffuse photon background are possible indications of the heavy DM particle annihilations. Light Majorana neutrinos trigger vorticity of the Universe [5, 6] through the spin-torsion connection in the Einstein-Cartan cosmology at early times of the evolution. The formation of large-scale structures in the form of galaxies and clusters, as well as, the present anisotropy of spacetime, indicate the existence of nonvanishing total angular momentum of the Universe. The current measurements of the CMB by WMAP, the large catalogues of SDSS, the new cluster and the peculiar velocity catalogues motivate us to undertake considerations to explain features that are not expected in the concordance Λ CDM model....
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This note was uploaded on 02/16/2011 for the course EKOM 113 taught by Professor Ggmojojmol during the Spring '11 term at Griggs.

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0902.1852v1 - arXiv:0902.1852v1 [astro-ph.CO] 11 Feb 2009...

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