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Cosmic Topology

observations

The Poincare dodecahedral space better explains the WMAP 3 year observations than the infinite flat model. We proposed a method that involves a cross-correlation function - this uses more information than the original identified circles method. An optimal cross-correlation appears to be a stable solution, and finds a twist angle of close to +36 degrees.

• ArXiv:0801.0006, ArXiv:0807.4260 - consistent with Luminet et al./Caillerie et al. and Aurich et al. analyses

Three-torus CMB + 3D quadruples methods:

• ArXiv:1302.4425 - Deep redshift topological lensing: strategies for the T^3 candidate - MNRAS URL - Roukema, France, Kazimierczak, Buchert (2013)

theoretical work

The Poincare dodecahedral space is much better balanced, in the sense of the interaction between topology and gravity called the residual gravity effect, than other spaces.

• AstroPh:0602159, ArXiv:0902.3402 - the residual gravity acceleration effect
  • [1] http://cdsads.u-strasbg.fr/abs/2007A%26A...463..861R
  • [2] http://cdsads.u-strasbg.fr/abs/2009A%26A...502...27R
  • [3] http://cdsads.u-strasbg.fr/abs/2012CQGra..29p5006O

people

People in our group presently working on cosmic topology subjects include:

• BoudRoukema
• Zbyszek Bulinski
• TomaszKazimierczak (Testowanie modelu Przestrzeni Dwunastościennej Poincare jako topologicznego modelu Wszechświata)

older work

• WMAP - identified circles - MonographCosmo
  • AstroPh:0402608
    • however: see AstroPh:0604616, ArXiv:0801.1358, ArXiv:0801.0006
  • mhg_20050615.ps: Calabretta & Roukema, draft - http://www.atnf.csiro.au/people/mcalabre/WCS/index.html
• RLAGNs larger catalogue/histograms - Boud, Andrzej M, Staszek - mrb04
  • AstroPh:0412181
• root of the identity in the spherical case - Boud
  • AstroPh:0409694

press releases

• • PressReleaseRBSG08
  • MediaShapeUniverse
  • OswiadczeniePrasoweDodekahedron

courses that include some cosmic topology content

• • MonographCosmo

-- BoudRoukema - 14 Jul 2010