A.G. Sánchez
Cosmological Parameters 2006
Sánchez, A.G.; Baugh, C.M.
Authors
Professor Carlton Baugh c.m.baugh@durham.ac.uk
Professor
Contributors
Dr Nigel Metcalfe nigel.metcalfe@durham.ac.uk
Editor
T. Shanks
Editor
Abstract
Recent measurements of the cosmic microwave background radiation (CMB), particularly when combined with other datasets, have revolutionised our knowledge of the values of the basic cosmological parameters. Here we summarize the state of play at the end of 2006, focusing on the combination of CMB measurements with the power spectrum of galaxy clustering. We compare the constraints derived from the extant CMB data circa 2005 and the final 2dFGRS galaxy power spectrum, with the results obtained when the WMAP 1-year data is replaced by the 3-year measurements (hereafter WMAP1 and WMAP3). Remarkably, the picture has changed relatively little with the arrival of WMAP3, though some aspects have been brought into much sharper focus. One notable example of this is the index of primordial scalar fluctuations, n_{s}. Prior to WMAP3, te{san_sanchez06} found that the scale invariant value of n_{s}=1 was excluded at the 95% level. With WMAP3, this becomes a 3 σ result, with implications for models of inflation. We find some disagreement between the constraints on certain parameters when the 2dFGRS P(k) is replaced by the SDSS measurement. This suggests that more work is needed to understand the relation between the clustering of different types of galaxies and the linear perturbation theory prediction for the power spectrum of matter fluctuations.
Citation
Sánchez, A., & Baugh, C. (2007). Cosmological Parameters 2006. In N. Metcalfe, & T. Shanks (Eds.), Cosmic Frontiers: proceedings of a conference held at Department of Physics, Durham University, Durham, UK, 31 July-4 August 2006
Conference Name | Cosmic Frontiers |
---|---|
Conference Location | Durham |
Publication Date | 2007-12 |
Publisher | Astronomical Society of the Pacific |
Volume | 379 |
Series Title | ASP Conference Series |
Book Title | Cosmic Frontiers: proceedings of a conference held at Department of Physics, Durham University, Durham, UK, 31 July-4 August 2006 |
ISBN | 9781583813201 |
Public URL | https://durham-repository.worktribe.com/output/1160973 |
Publisher URL | https://www.astrosociety.org/publications/asp-conference-series-volumes-2007-vols-361-380/ |
Related Public URLs | http://arxiv.org/abs/astro-ph/0612743 |
You might also like
The VST ATLAS quasar survey I: Catalogue of photometrically selected quasar candidates
(2023)
Journal Article
VST ATLAS galaxy cluster catalogue I: cluster detection and mass calibration
(2023)
Journal Article
The local hole: a galaxy underdensity covering 90 per cent of sky to ≈200 Mpc
(2022)
Journal Article
The nature of sub-millimetre galaxies II: an ALMA comparison of SMG dust heating mechanisms
(2022)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search