Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-30T04:34:57.048Z Has data issue: false hasContentIssue false
  • English
  • Français

Cosmic Data Fusion

Published online by Cambridge University Press:  26 May 2016

S. L. Bridle
S. L. Bridle*
Affiliation:
OMP, 14 avenue E. Belin, F-31400, Toulouse, France; Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We compare and combine likelihood functions of the cosmological parameters Ωm, h and σ8 from the CMB, type Ia supernovae and from probes of large scale structure. We include the recent results from the CMB experiments BOOMERANG and MAXIMA-1. Our analysis assumes a flat ACDM cosmology with a scale-invariant adiabatic initial power spectrum. First we consider three data sets that directly probe the mass in the Universe, without the need to relate the galaxy distribution to the underlying mass via a “biasing” relation: peculiar velocities, CMB and supernovae. We assume a baryonic fraction as inferred from Big-Bang Nucleosynthesis and find that all three data sets agree well, overlapping significantly at the 2σ level. This therefore justifies a joint analysis, in which we find a joint best fit point and 95% confidence limits of Ωm = 0.28 (0.17, 0.39), h = 0.74 (0.64, 0.86), and σ8 = 1.17 (0.98,1.37). Secondly we extend our earlier work on combining CMB, supernovae, cluster number counts, IRAS galaxy redshift survey data to include BOOMERANG and MAXIMA-1 data and to allow a free Ωbh2. We find that, given our assumption of a scale invariant initial power spectrum (n = 1), we obtain the robust result of Ωbh2 = 0.031 ± 0.03, which is dominated by the CMB constraint.

Type
Part IX: Putting it all together
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 368 - 376
Copyright
Copyright © Astronomical Society of the Pacific 2005 

References

Bahcall, N., Ostriker, J., Perlmutter, S. & Steinhardt, P. 1999, Science, 284, 1481.Google Scholar
Balbi, et al. 2000, ApJ, submitted (astro-ph/0005124).Google Scholar
Bond, J. R. & Jaffe, A. H. 1998 Philosophical Transactions of the Royal Society of London A, 1998. “Discussion Meeting on Large Scale Structure in the Universe,” Royal Society, London, March 1998.Google Scholar
Bridle, S. L., Eke, V. R., Lahav, O., Lasenby, A. N., Hobson, M. P., Cole, S., Frenk, C. F. & Henry, J. P. 1999, MNRAS, 310, 565.Google Scholar
Bridle, S. L., Zehavi, I., Dekel, A., Lahav, O., Hobson, M. P. & Lasenby, A. N. 2000, MNRAS, in press (astro-ph/0006170).Google Scholar
Buries, S., Nollett, K. M., Truran, J. N. & Turner, M. S. 1999, Phys.Rev.Lett., 82, 4176.Google Scholar
Dodelson, S. & Knox, L. 2000, Phys.Rev.Lett., 84, 3523.CrossRefGoogle Scholar
Efstathiou, G., Bridle, S. L., Lasenby, A. N., Hobson, M. P. & Ellis, R. S. 1999, MNRAS, 303, L47.Google Scholar
Efstathiou, G. & Bond, J. R. 1999, MNRAS, 304, 75.Google Scholar
Efstathiou, G., Bond, J. R. & White, S. D. M. 1992, MNRAS, 258, 1.CrossRefGoogle Scholar
Eke, V. R., Cole, S., Frenk, C. S. & Henry, J. P. 1998, MNRAS, 298, 1145.Google Scholar
Fisher, K. B., Scharf, C. A. & Lahav, O. 1994, MNRAS, 266, 219.CrossRefGoogle Scholar
Freedman, W. L. et al. 2000, ApJ, in press (astro-ph/0012376).Google Scholar
Freudling, et al. 1999, ApJ, 523, 1.Google Scholar
Gawiser, E. & Silk, J., 1998, Science, 280, 1405.Google Scholar
Haynes, M. P., Giovanelli, R., Salzer, J. J., Wegner, G., Freudling, W., da Costa, L. N., Herter, T. & Vogt, N. P. 1999a, AJ, 117, 1668.Google Scholar
Haynes, M. P., Giovanelli, R., Chamaraux, P., da Costa, L. N., Freudling, W., Salzer, J. J. & Wegner, G. 1999b, AJ, 117, 2039.Google Scholar
Hu, W., Sugiyama, N. & Silk, J. 1997, Nature 386, 6.Google Scholar
Jaffe, A. et al. 2000, submitted to PRL (astro-ph/0007333).Google Scholar
Lahav, O., Bridle, S. L, Hobson, M. P., Lasenby, A. N. & Sodre, L. Jr. 1999, MNRAS, 315, 45L.Google Scholar
Lange, A. E. et al. 2000, preprint (astro-ph/0005004).Google Scholar
Lewis, A., Challinor, A. & Lasenby, A. 2000, ApJ, in press (astro-ph/9911177).Google Scholar
Lineweaver, C. H. 1998, ApJ, 505, L69.CrossRefGoogle Scholar
Perlmutter, S. et al. 1999, ApJ, 517, 565.Google Scholar
Riess, A. G. et al. 1998, AJ, 116, 1009.Google Scholar
Seljak, U. & Zaldarriaga, M. 1996, ApJ, 469, 437.Google Scholar
Tegmark, M. & Zaldarriaga, M. 2000, preprint (astro-ph/0004393).Google Scholar
Zaroubi, S., Zehavi, I., Dekel, A., Hoffman, Y. & Kolatt, T. 1997, ApJ, 486,CrossRefGoogle Scholar