ePubs
The open archive for STFC research publications
Home
About ePubs
Content Policies
News
Help
Privacy/Cookies
Suggest an Enhancement
Contact ePubs
Full Record Details
Persistent URL
http://purl.org/net/epubs/work/10793454
Record Status
Checked
Record Id
10793454
Title
The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the Universe
Contributors
W Percival
,
J Peacock
,
W Sutherland
,
C Baugh
,
S Cole
,
C Frenk
,
P Norberg
,
J Bland-Hawthorn
,
T Bridges
,
R Cannon
,
I Lewis
,
K Taylor
,
M Colless
,
C Jackson
,
B Peterson
,
C Collins
,
W Couch
,
R De Propris
,
G Dalton (Oxford U.)
,
S Driver
,
G Efstathiou
,
O Lahav
,
S Moody
,
R Ellis
,
K Glazebrook
,
S Lumsden
,
S Maddox
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 , 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 ? , h = 0.20 ± 0.03, and the baryon fraction ? /? = 0.15 ± 0.07, assuming scale-invariant primordial fluctuations.
Organisation
Keywords
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Mon Notic Roy Astron Soc
327 (2001): 1297-1306.
doi:10.1046/j.1365-8711.2001.04827.x
2001
Showing record 1 of 1
Recent Additions
Browse Organisations
Browse Journals/Series
Login to add & manage publications and access information for OA publishing
Username:
Password:
Useful Links
Chadwick & RAL Libraries
SHERPA FACT
SHERPA RoMEO
SHERPA JULIET
Journal Checker Tool
Google Scholar