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Related papers: The Angular Two Point Correlation Function for the…

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The FIRST (Faint Images of the Radio Sky at Twenty Centimeters) survey now covers 1550 square degrees of sky where $07^{h}16 < \alpha < 17^{h}40$ and $28^{\circ}.3 < \delta < 42^{\circ}$. This yields a catalog of 138,665 sources above the…

Astrophysics · Physics 2009-10-28 C. M. Cress , D. J. Helfand , R. H. Becker , M. D. Gregg , R. L. White

We quantify the angular clustering of radio galaxies in the NVSS and FIRST radio surveys using the two-point correlation function and the moments of counts-in-cells - both important points of comparison with theory. These investigations…

Astrophysics · Physics 2009-11-07 Chris Blake , Jasper Wall

Using the Phoenix radio survey, a homogeneous survey selected at 1.4GHz and covering an area of ~3deg^2, we analyse the clustering of the sub-mJy radio population using angular correlation function analysis. Extensive simulations are…

Astrophysics · Physics 2009-10-31 A. Georgakakis , B. Mobasher , L. Cram , A. Hopkins , M. Rowan-Robinson

This paper presents an angular correlation analysis of the Green Bank 4.85 GHz radio catalog (Gregory \& Condon 1991) of 54,579 sources (S \gsim 25 mJy). The Green Bank catalog is found to be complete to S $\geq$ 35 mJy over 20$^{\circ}…

Astrophysics · Physics 2016-08-30 Brian L. Kooiman , Jack O. Burns , Anatoly A. Klypin

We investigate the large-scale clustering of radio sources in the FIRST 1.4-GHz survey by analysing the distribution function (counts in cells). We select a reliable sample from the the FIRST catalogue, paying particular attention to the…

Astrophysics · Physics 2009-10-30 M. Magliocchetti , S. J. Maddox , O. Lahav , J. V. Wall

In order to construct accurate point sources simulations at the frequencies relevant to 21 cm experiments, the angular correlation of radio sources must be taken into account. Using the 74 MHz VLSS survey, we measured the angular 2-point…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Angelica de Oliveira-Costa , John Capodilupo

We use results of angular clustering measurements in 3000 sq. deg's of the FIRST radio survey to infer information on spatial clustering. Measurements are compared with CDM-model predictions. Clustering of FIRST sources with optical ID's in…

Astrophysics · Physics 2016-01-27 C. M. Cress , FIRST collaboration

We present the first measurement of the angular correlation function in a $K$-selected galaxy survey, from two fields covering almost 10 square degrees. The angular correlation function at small angles is well described by a $\theta^{-0.8}$…

Astrophysics · Physics 2016-06-08 C. M. Baugh , J. P. Gardner , C. S. Frenk , R. M. Sharples

We quantify the angular distribution of radio sources in the NVSS by measuring the two-point angular correlation function. By careful consideration of the resolution of radio galaxies into multiple components, we are able to determine both…

Astrophysics · Physics 2009-11-07 Chris Blake , Jasper Wall

In order to construct accurate point sources simulations at the frequencies relevant to 21-cm experiments, the angular correlation of radio sources must be taken into account. This paper presents a measurement of angular two-point…

Cosmology and Nongalactic Astrophysics · Physics 2010-04-20 Angelica de Oliveira-Costa , Joseph Lazio

We compute the angular two-point correlation functions of the gamma-ray bursts at cosmological distances. Since the gamma-ray burst emission mechanism is not yet established, we simply assume that the gamma-ray burst sources are associated…

Astrophysics · Physics 2009-10-22 Shiho Kobayashi , Shin Sasaki , Yasushi Suto

Significant uncertainties exist in the measured amplitude of the angular two-point correlation function of galaxies at magnitudes $I\approx26$ and fainter. Published results from HST and ground-based galaxy catalogs seem to differ by as…

Astrophysics · Physics 2011-05-23 J. U. Fynbo , W. Freudling , P. Moller

The Sloan Digital Sky Survey is one of the first multicolor photometric and spectroscopic surveys designed to measure the statistical properties of galaxies within the local Universe. In this Letter we present some of the initial results on…

We present the first measurement of the angular two-point correlation function for AKARI 90-$\mu$m point sources, detected outside of the Milky Way plane and other regions characterized by high Galactic extinction, and categorized as…

Cosmology and Nongalactic Astrophysics · Physics 2012-10-10 A. Pollo , T. T. Takeuchi , T. L. Suzuki , S. Oyabu

We present a novel technique for calculating the two-point autocorrelation function of the Lyman-alpha forest based on the relation between the two-point correlation function and the Neighbor Probability Distribution Functions. The…

Astrophysics · Physics 2009-10-28 Avery Meiksin , Francois R. Bouchet

We investigate the large-scale clustering of radio sources in the Green Bank and Parkes-MIT-NRAO 4.85 GHz surveys by measuring the angular two-point correlation function w(\theta). Excluding contaminated areas, the two surveys together…

Astrophysics · Physics 2015-06-24 A. J. Loan , J. V. Wall , O. Lahav

We study the angular clustering of point sources in The GMRT (Giant Meter Wave Telescope) Sky Survey (TGSS). The survey at 150 MHz with delta > -53.5 degrees has a sky coverage of 3.6 pi steradians, i.e., 90% of the whole sky. We created…

Astrophysics of Galaxies · Physics 2019-06-04 Sandeep Rana , J. S. Bagla

The two point angular correlation function is an excellent measure of structure in the universe. To extract from it the three dimensional power spectrum, one must invert Limber's Equation. Here we perform this inversion using a Bayesian…

Astrophysics · Physics 2008-11-26 Scott Dodelson , Enrique Gaztanaga

We present an analysis of the two-point angular correlation function of the ELAIS S1 survey. The survey covers 4 deg$^2$ and contains 462 sources detected at 15$\mu$m to a 5$\sigma$ flux limit of 0.45 mJy. Using the 329 extragalactic…

The calculation of the characteristic function of the signal fluctuations due to clustered astrophysical sources is performed in this paper. For the typical case of power-law differential number counts and two-point angular correlation…

Cosmology and Nongalactic Astrophysics · Physics 2019-07-10 Francisco Argüeso , Diego Herranz , Luigi Toffolatti , Joaquín González-Nuevo
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