Clustering of Radio Sources at High Redshift

Details Clustering of Radio Sources at High Redshift Clustering of Radio Sources at High Redshift

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.523m&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

We investigate the large-scale clustering of radio sources in the FIRST 1.4-GHz survey by analysing their distribution function. We estimate the angular two-point correlation function w(theta), the variance Psi_2, and skewness Psi_3 of the distribution; both w(theta) and Psi_2 show power-law behaviour with an amplitude corresponding a spatial correlation length of r_0 ~10 h^{-1}Mpc. We detect significant skewness in the distribution, the first such detection in radio surveys, consistent with the non-linear gravitational growth of perturbations from primordial Gaussian initial conditions. We also investigate how different theoretical predictions for the normalised variance sigma^2 can match our measurements.

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