The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the Universe

Will J. Percival; Carlton M. Baugh; Joss Bland-Hawthorn; Terry Bridges; Russell Cannon; Shaun Cole; Matthew Colless; Chris Collins; Warrick Couch; Gavin Dalton; Roberto De Propris; Simon P. Driver; George Efstathiou; Richard S. Ellis; Carlos S. Frenk; Karl Glazebrook; Carole Jackson; Ofer Lahav; Ian Lewis; Stuart Lumsden; Steve Maddox; Stephen Moody; Peder Norberg; John A. Peacock; Bruce A. Peterson; Will Sutherland; Keith Taylor

doi:10.1046/j.1365-8711.2001.04827.x

The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the Universe

Will J. Percival, Carlton M. Baugh, Joss Bland-Hawthorn, Terry Bridges, Russell Cannon, Shaun Cole, Matthew Colless, Chris Collins, Warrick Couch, Gavin Dalton, Roberto De Propris, Simon P. Driver, George Efstathiou, Richard S. Ellis, Carlos S. Frenk, Karl Glazebrook, Carole Jackson, Ofer Lahav, Ian Lewis, Stuart LumsdenSteve Maddox, Stephen Moody, Peder Norberg, John A. Peacock, Bruce A. Peterson, Will Sutherland, Keith Taylor

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Abstract

The 2dF Galaxy Redshift Survey has now measured in excess of 160 000 galaxy redshifts. This paper presents the power spectrum of the galaxy distribution, calculated using a direct Fourier transform based technique. We argue that, within the k-space region 0.02 ≲ k ≲ 0.15 h Mpc^-1, the shape of this spectrum should be close to that of the linear density perturbations convolved with the window function of the survey. This window function and its convolving effect on the power spectrum estimate are analysed in detail. By convolving model spectra, we are able to fit the power-spectrum data and provide a measure of the matter content of the Universe. Our results show that models containing baryon oscillations are mildly preferred over featureless power spectra. Analysis of the data yields 68 per cent confidence limits on the total matter density times the Hubble parameter Ω_m, h = 0.20 ± 0.03, and the baryon fraction Ω_b/Ω_m = 0.15 ± 0.07, assuming scale-invariant primordial fluctuations.

Original language	English
Pages (from-to)	1297-1306
Number of pages	10
Journal	Monthly Notices of the Royal Astronomical Society
Volume	327
Issue number	4
DOIs	https://doi.org/10.1046/j.1365-8711.2001.04827.x
Publication status	Published - 11 Nov 2001
Externally published	Yes

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Percival, W. J., Baugh, C. M., Bland-Hawthorn, J., Bridges, T., Cannon, R., Cole, S., Colless, M., Collins, C., Couch, W., Dalton, G., De Propris, R., Driver, S. P., Efstathiou, G., Ellis, R. S., Frenk, C. S., Glazebrook, K., Jackson, C., Lahav, O., Lewis, I., ... Taylor, K. (2001). The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the Universe. Monthly Notices of the Royal Astronomical Society, 327(4), 1297-1306. https://doi.org/10.1046/j.1365-8711.2001.04827.x

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title = "The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the Universe",

abstract = "The 2dF Galaxy Redshift Survey has now measured in excess of 160 000 galaxy redshifts. This paper presents the power spectrum of the galaxy distribution, calculated using a direct Fourier transform based technique. We argue that, within the k-space region 0.02 ≲ k ≲ 0.15 h Mpc-1, the shape of this spectrum should be close to that of the linear density perturbations convolved with the window function of the survey. This window function and its convolving effect on the power spectrum estimate are analysed in detail. By convolving model spectra, we are able to fit the power-spectrum data and provide a measure of the matter content of the Universe. Our results show that models containing baryon oscillations are mildly preferred over featureless power spectra. Analysis of the data yields 68 per cent confidence limits on the total matter density times the Hubble parameter Ωm, h = 0.20 ± 0.03, and the baryon fraction Ωb/Ωm = 0.15 ± 0.07, assuming scale-invariant primordial fluctuations.",

keywords = "Cosmological parameters, Large-scale structure of Universe",

author = "Percival, {Will J.} and Baugh, {Carlton M.} and Joss Bland-Hawthorn and Terry Bridges and Russell Cannon and Shaun Cole and Matthew Colless and Chris Collins and Warrick Couch and Gavin Dalton and {De Propris}, Roberto and Driver, {Simon P.} and George Efstathiou and Ellis, {Richard S.} and Frenk, {Carlos S.} and Karl Glazebrook and Carole Jackson and Ofer Lahav and Ian Lewis and Stuart Lumsden and Steve Maddox and Stephen Moody and Peder Norberg and Peacock, {John A.} and Peterson, {Bruce A.} and Will Sutherland and Keith Taylor",

year = "2001",

month = nov,

day = "11",

doi = "10.1046/j.1365-8711.2001.04827.x",

language = "English",

volume = "327",

pages = "1297--1306",

journal = "Monthly Notices of the Royal Astronomical Society",

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Percival, WJ, Baugh, CM, Bland-Hawthorn, J, Bridges, T, Cannon, R, Cole, S, Colless, M, Collins, C, Couch, W, Dalton, G, De Propris, R, Driver, SP, Efstathiou, G, Ellis, RS, Frenk, CS, Glazebrook, K, Jackson, C, Lahav, O, Lewis, I, Lumsden, S, Maddox, S, Moody, S, Norberg, P, Peacock, JA, Peterson, BA, Sutherland, W & Taylor, K 2001, 'The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the Universe', Monthly Notices of the Royal Astronomical Society, vol. 327, no. 4, pp. 1297-1306. https://doi.org/10.1046/j.1365-8711.2001.04827.x

TY - JOUR

T1 - The 2dF Galaxy Redshift Survey

T2 - The power spectrum and the matter content of the Universe

AU - Percival, Will J.

AU - Baugh, Carlton M.

AU - Bland-Hawthorn, Joss

AU - Bridges, Terry

AU - Cannon, Russell

AU - Cole, Shaun

AU - Colless, Matthew

AU - Collins, Chris

AU - Couch, Warrick

AU - Dalton, Gavin

AU - De Propris, Roberto

AU - Driver, Simon P.

AU - Efstathiou, George

AU - Ellis, Richard S.

AU - Frenk, Carlos S.

AU - Glazebrook, Karl

AU - Jackson, Carole

AU - Lahav, Ofer

AU - Lewis, Ian

AU - Lumsden, Stuart

AU - Maddox, Steve

AU - Moody, Stephen

AU - Norberg, Peder

AU - Peacock, John A.

AU - Peterson, Bruce A.

AU - Sutherland, Will

AU - Taylor, Keith

PY - 2001/11/11

Y1 - 2001/11/11

N2 - The 2dF Galaxy Redshift Survey has now measured in excess of 160 000 galaxy redshifts. This paper presents the power spectrum of the galaxy distribution, calculated using a direct Fourier transform based technique. We argue that, within the k-space region 0.02 ≲ k ≲ 0.15 h Mpc-1, the shape of this spectrum should be close to that of the linear density perturbations convolved with the window function of the survey. This window function and its convolving effect on the power spectrum estimate are analysed in detail. By convolving model spectra, we are able to fit the power-spectrum data and provide a measure of the matter content of the Universe. Our results show that models containing baryon oscillations are mildly preferred over featureless power spectra. Analysis of the data yields 68 per cent confidence limits on the total matter density times the Hubble parameter Ωm, h = 0.20 ± 0.03, and the baryon fraction Ωb/Ωm = 0.15 ± 0.07, assuming scale-invariant primordial fluctuations.

AB - The 2dF Galaxy Redshift Survey has now measured in excess of 160 000 galaxy redshifts. This paper presents the power spectrum of the galaxy distribution, calculated using a direct Fourier transform based technique. We argue that, within the k-space region 0.02 ≲ k ≲ 0.15 h Mpc-1, the shape of this spectrum should be close to that of the linear density perturbations convolved with the window function of the survey. This window function and its convolving effect on the power spectrum estimate are analysed in detail. By convolving model spectra, we are able to fit the power-spectrum data and provide a measure of the matter content of the Universe. Our results show that models containing baryon oscillations are mildly preferred over featureless power spectra. Analysis of the data yields 68 per cent confidence limits on the total matter density times the Hubble parameter Ωm, h = 0.20 ± 0.03, and the baryon fraction Ωb/Ωm = 0.15 ± 0.07, assuming scale-invariant primordial fluctuations.

KW - Cosmological parameters

KW - Large-scale structure of Universe

UR - http://www.scopus.com/inward/record.url?scp=0000990243&partnerID=8YFLogxK

U2 - 10.1046/j.1365-8711.2001.04827.x

DO - 10.1046/j.1365-8711.2001.04827.x

M3 - Article

AN - SCOPUS:0000990243

SN - 0035-8711

VL - 327

SP - 1297

EP - 1306

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the Universe

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