scholarly journals Probing the accelerating Universe with redshift-space distortions in VIPERS

2014 ◽  
Vol 11 (S308) ◽  
pp. 617-622
Author(s):  
Sylvain de la Torre
Keyword(s):  
Growth Rate ◽  
Large Scale ◽  
Large Scale Structure ◽  
Einstein Gravity ◽  
Accelerating Universe ◽  
Data Release ◽  
The Galaxy ◽  
Redshift Survey ◽  
Galaxy Redshift ◽  
Clustering Pattern

AbstractWe present the first measurement of the growth rate of structure at z=0.8. It has been obtained from the redshift-space distortions observed in the galaxy clustering pattern in the VIMOS Public Redshift survey (VIPERS) first data release. VIPERS is a large galaxy redshift survey probing the large-scale structure at 0.5 < z < 1.2 with an unprecedented accuracy. This measurement represents a new reference in the distant Universe, which has been poorly explored until now. We obtain σ8 = 0.47 ± 0.08 at z = 0.8 that is consistent with the predictions of standard cosmological models based on Einstein gravity. This measurement alone is however not accurate enough to allow the detection of possible deviations from standard gravity.

scholarly journals The Durham/UKST Galaxy Redshift Survey -- I. Large-scale structure in the Universe

1996 ◽  
Vol 281 (3) ◽  
pp. L47-L52 ◽  
Author(s):  
A. Ratcliffe ◽  
T. Shanks ◽  
A. Broadbent ◽  
Q. A. Parker ◽  
F. G. Watson ◽  
...  
Keyword(s):  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Redshift Survey ◽  
Galaxy Redshift ◽  
The Universe

scholarly journals Constraining the growth rate of structure with phase correlations

2020 ◽  
Vol 497 (2) ◽  
pp. 1765-1790
Author(s):  
Joyce Byun ◽  
Felipe Oliveira Franco ◽  
Cullan Howlett ◽  
Camille Bonvin ◽  
Danail Obreschkow
Keyword(s):  
Growth Rate ◽  
Correlation Function ◽  
Power Spectrum ◽  
Large Scale ◽  
Large Scale Structure ◽  
Density Field ◽  
Galaxy Surveys ◽  
Additional Information ◽  
Forecasting Method ◽  
The Galaxy

ABSTRACT We show that correlations between the phases of the galaxy density field in redshift space provide additional information about the growth rate of large-scale structure that is complementary to the power-spectrum multipoles. In particular, we consider the multipoles of the line correlation function (LCF), which correlates phases between three collinear points, and use the Fisher forecasting method to show that the LCF multipoles can break the degeneracy between the measurement of the growth rate of structure f and the amplitude of perturbations σ8 that is present in the power-spectrum multipoles at large scales. This leads to an improvement in the measurement of f and σ8 by up to 220 per cent for $k_{\rm max} = 0.15 \, h\, \mathrm{Mpc}^{-1}$ and up to 50 per cent for $k_{\rm max} = 0.30 \, h\, \mathrm{Mpc}^{-1}$ at redshift z = 0.25, with respect to power-spectrum measurements alone for the upcoming generation of galaxy surveys like DESI and Euclid. The average improvements in the constraints on f and σ8 for $k_{\rm max} = 0.15 \, h\, \mathrm{Mpc}^{-1}$ are ∼90 per cent for the DESI BGS sample with mean redshift $\overline{z}=0.25$, ∼40 per cent for the DESI ELG sample with $\overline{z}=1.25$, and ∼40 per cent for the Euclid Hα galaxies with $\overline{z}=1.3$. For $k_{\rm max} = 0.30 \, h\, \mathrm{Mpc}^{-1}$, the average improvements are ∼40 per cent for the DESI BGS sample and ∼20 per cent for both the DESI ELG and Euclid Hα galaxies.

scholarly journals Large-scale structure in a new deep IRAS galaxy redshift survey

1996 ◽  
Vol 280 (3) ◽  
pp. 673-688 ◽  
Author(s):  
S. J. Oliver ◽  
M. Rowan-Robinson ◽  
T. J. Broadhurst ◽  
R. G. McMahon ◽  
W. Saunders ◽  
...  
Keyword(s):  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Redshift Survey ◽  
Galaxy Redshift ◽  
Iras Galaxy

scholarly journals The CNOC2 Field Galaxy Redshipt Survey

1998 ◽  
Vol 11 (1) ◽  
pp. 460-463
Author(s):  
H.K.C. Yee ◽  
M.J. Sawicki ◽  
R.G. Carlberg ◽  
H. Lin ◽  
S.L. Morris ◽  
...  
Keyword(s):  
Large Scale ◽  
Cosmological Parameters ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Observational Cosmology ◽  
Data Set ◽  
Redshift Survey ◽  
Galaxy Redshift ◽  
Galaxy Population ◽  
Field Galaxy

Fundamental to our understanding of the universe is the evolution of structures, from galaxies to clusters of galaxies to large-scale sheets and filaments of galaxies and voids. The investigation of the evolution of large-scale structure not only provides us with the key test of theories of structure formation, but also allows us to measure fundamental cosmological parameters. The CNOC2 (Canadian Network for Observational Cosmology) Field Galaxy Redshift Survey is the first large redshift survey of faint galaxies carried out with the explicit goal of investigating the evolution of large scale structure. This survey also provides the largest redshift and photometric data set currently available for the study of galaxy population and evolution at the moderate redshift range between 0.1 and 0.6. In this paper we describe the scope and technique of the survey, its status, and some preliminary results.

Large-Scale Structure in the Durham/UKST Galaxy Redshift Survey

1994 ◽  
pp. 693-697
Author(s):  
A. Broadbent ◽  
T. Shanks ◽  
R. Fong ◽  
C. A. Collins ◽  
F. G. Watson ◽  
...  
Keyword(s):  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Redshift Survey ◽  
Galaxy Redshift
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