The effect of large-scale structure on the SDSS galaxy three-point correlation function

In frames of the chaotic inflation scenario the influence of the inhomogeneity of the inflationary universe on the primordial fluctuations spectrum is investigated. The phenomenon of the anisotropy of the observed large-scale structure is predicted. In particular this means that the two-point correlation function ξ(x) is anisotropic. An expected value of the anisotropy is about 10%. The observation of the anisotropy predicted could serve as confirmation to the chaotic inflation scenario.

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

Symposium - International Astronomical Union ◽

10.1017/s0074180900048361 ◽

1994 ◽

Vol 161 ◽

pp. 693-697

Author(s):

A. Broadbent ◽

T. Shanks ◽

F.G. Watson ◽

Q.A. Parker ◽

R. Fong ◽

...

Keyword(s):

Correlation Function ◽

Statistical Analysis ◽

Large Scale ◽

Large Scale Structure ◽

Scale Structure ◽

Point Correlation ◽

Point Correlation Function ◽

Redshift Survey ◽

Galaxy Redshift ◽

The Universe

We report on the progress of the compilation and analysis of the Durham/UKST galaxy redshift survey. This survey will probe a large contiguous volume of space within a 1500 sq. deg. area of sky around the SGP. It will contain redshifts of ∼ 4000 galaxies of bJ < 17m providing detailed information about the structure of the Universe on large scales. Large features on scales of ∼ 100h−1 Mpc are clearly visible on examination of the completed section of the survey, although a statistical analysis of the survey by means of the two-point correlation function is close to zero on scales of r > 10h−1 Mpc.

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The Local Large-Scale Structure from HIPASS

Symposium - International Astronomical Union ◽

10.1017/s0074180900196639 ◽

2005 ◽

Vol 216 ◽

pp. 196-202

Author(s):

Martin Zwaan ◽

Martin Meyer ◽

Rachel Webster ◽

Lister Staveley-Smith

Keyword(s):

Large Scale ◽

Large Scale Structure ◽

Scale Structure ◽

Sky Survey ◽

The Galaxy ◽

Point Correlation ◽

Point Correlation Function ◽

Fisher Relation ◽

Galaxy Population ◽

Mass Functions

The HI Parkes All Sky Survey (HIPASS) offers a unique perspective on the galaxy population in the local universe. A catalogue of 4315 HI-selected galaxies has been extracted from the southern region of the survey (δ < +2°). This catalogue gives a clear view of the local large-scale structure and is used to study the two-point correlation function, the Tully-Fisher relation, and galaxy luminosity and mass functions. Some initial results are discussed here.

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Probing Large Scale Structures in HI with GMRT

Symposium - International Astronomical Union ◽

10.1017/s0074180900168640 ◽

2002 ◽

Vol 199 ◽

pp. 108-109 ◽

Cited By ~ 1

Author(s):

S. Bharadwaj ◽

B.B. Nath ◽

S.K. Sethi

Keyword(s):

Correlation Function ◽

Brightness Temperature ◽

Large Scale ◽

Background Radiation ◽

Low Frequency ◽

Large Scale Structure ◽

Large Scale Structures ◽

Point Correlation ◽

Point Correlation Function ◽

Scale Structures

The redshifted 1420 MHz emission from the HI in unresolved Lyman-α clouds (DLA) at high z will appear as a background radiation in low frequency radio observations. We calculate the brightness temperature and the angular two-point correlation function of the fluctuations of this radiation. This can be an important probe of the large-scale structure at high z.

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N-Body Simulation of Large Scale Structure in the Universe with Oscillating Scalar Field

Symposium - International Astronomical Union ◽

10.1017/s0074180900132693 ◽

1999 ◽

Vol 183 ◽

pp. 252-252

Author(s):

K. Kawabata ◽

H. Taguchi ◽

Y. Andoh

Keyword(s):

Scalar Field ◽

Large Scale ◽

Large Scale Structure ◽

Scale Structure ◽

Homogeneous Distribution ◽

Coupling Constant ◽

Mesh Method ◽

Point Correlation ◽

Point Correlation Function ◽

The Universe

Using the particle-mesh method with 1283 grids and 643 particles, we have carried out a number of N-body simulations of the large scale structure for the cosmological model proposed by Fukuyama et al.(1996): this model contains the matter(Ω0) as well as a scalar field(Φ) with a finite mass that couples non-minimally with the scalar curvature R through the form of 1/2ηΦ2R, where η(= −80) is the coupling constant.For simplicity, we have adopted the same values as those employed by Fukuyama et al.(1996) for all the parameters other than Ω0, fo which we have varied from 0.001 to 0.15. In performing our simulation, we further assume that only the density of matter ρ spatially fluctuates. The initial condition is created by perturbing the homogeneous distribution of the particles by means of the random Gaussian Harrison-Zeldovich spectrum.The two-point correlation function ξ(r) is then compputed for each of the resulting structures to compare with the observational data(Davis and Peebles, 1983). It is interesting to note that the structure formation appears to be achieved rather straightforwardly with the scalar field model. However, in order to yield an agreement between the theoretical and the observational two-point correlation functions, we seem to require the Ω0 value much larger than 0.01 adopted by Fukuyama et al.(1996).

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The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: large-scale structure catalogues and measurement of the isotropic BAO between redshift 0.6 and 1.1 for the Emission Line Galaxy Sample

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/staa3336 ◽

2020 ◽

Vol 500 (3) ◽

pp. 3254-3274

Author(s):

Anand Raichoor ◽

Arnaud de Mattia ◽

Ashley J Ross ◽

Cheng Zhao ◽

Shadab Alam ◽

...

Keyword(s):

Emission Line ◽

Large Scale ◽

Large Scale Structure ◽

Scale Structure ◽

Sloan Digital Sky Survey ◽

Acoustic Oscillations ◽

Galaxy Sample ◽

Point Correlation ◽

Point Correlation Function ◽

Line Galaxy

ABSTRACT We present the Emission Line Galaxy (ELG) sample of the extended Baryon Oscillation Spectroscopic Survey from the Sloan Digital Sky Survey IV Data Release 16. We describe the observations and redshift measurement for the 269 243 observed ELG spectra, and then present the large-scale structure catalogues, used for the cosmological analysis, and made of 173 736 reliable spectroscopic redshifts between 0.6 and 1.1. We perform a spherically averaged baryon acoustic oscillations (BAO) measurement in configuration space, with density field reconstruction: the data two-point correlation function shows a feature consistent with that of the BAO, the BAO model being only weakly preferred over a model without BAO (Δχ2 < 1). Fitting a model constrained to have a BAO feature provides a 3.2 per cent measurement of the spherically averaged BAO distance DV(zeff)/rdrag = 18.23 ± 0.58 at the effective redshift zeff = 0.845.

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The Anglo-Australian Redshift Survey

Symposium - International Astronomical Union ◽

10.1017/s0074180900038894 ◽

1983 ◽

Vol 104 ◽

pp. 175-175

Author(s):

J. Bean ◽

G. Efstathiou ◽

R. S. Ellis ◽

B. A. Peterson ◽

T. Shanks ◽

...

Keyword(s):

Correlation Function ◽

Luminosity Function ◽

Large Scale ◽

Peculiar Velocities ◽

Point Correlation ◽

Point Correlation Function ◽

Redshift Survey ◽

Density Inhomogeneities ◽

The Universe

The aim of the survey is to sample a relatively large, randomly chosen volume of the Universe in order to study the large-scale distribution of galaxies using the two-point correlation function, the peculiar velocities between galaxy pairs and to provide an estimate of the galaxian luminosity function that is unaffected by density inhomogeneities and Virgo infall.

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