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The 2dF Galaxy Redshift Survey: The amplitudes of fluctuations in the 2dFGRS and the CMB, and implications for galaxy biasing

Abstract:

We compare the amplitudes of fluctuations probed by the 2dF Galaxy Redshift Survey (2dFGRS) and by the latest measurements of the cosmic microwave background (CMB) anisotropies. By combining the 2dFGRS and CMB data, we find the linear-theory rms mass fluctuations in 8 h-1 Mpc spheres to be σ8m = 0.73 ± 0.05 (after marginalization over the matter density parameter Ωm and three other free parameters). This normalization is lower than the COBE normalization and previous estimates from cluster ab...

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Journal:
Monthly Notices of the Royal Astronomical Society
Volume:
333
Issue:
4
Pages:
961-968
Publication date:
2002-07-11
DOI:
ISSN:
0035-8711
URN:
uuid:518e5b11-3473-4353-a432-e6f7d1f67b27
Source identifiers:
159765
Local pid:
pubs:159765

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