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19 April 2024 |
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Article overview
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Bianchi VII_h models and the cold spot texture | | M. Bridges
; J.D. McEwen
; M. Cruz
; M.P. Hobson
; A.N. Lasenby
; P. Vielva
; E. Martinez-Gonzalez
; | | Date: |
11 Dec 2007 | | Abstract: | We have returned to our previous Bianchi VII_h analysis in light of the Cruz
et al. 2007 suggestion that the cold spot observed near the southern Galactic
pole may be a remnant temperature perturbation of a cosmic texture. In Bridges
et al. 2006b we found two favoured left handed Bianchi VII_h templates with
restricted prior probabilities so that the template was centred close to the
cold spot. Using WMAP data ’corrected’ for the texture fit we have now
reexamined both models to assess any changes to these conclusions. We find that
both models are left almost entirely unconstrained by the data and consequently
exhibit significantly reduced Bayesian evidences. Both models are now
disfavoured by the data. This result reinforces our previous suggestion that
the cold spot was likely to be driving any Bianchi VII_h detection. | | Source: | arXiv, 0712.1789 | | Services: | Forum | Review | PDF | Favorites | |
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