Autocorrelation Function for Radio Galaxies

TL;DR

This paper analyzes the autocorrelation function of radio galaxies from the LCRS and NVSS surveys, revealing power-law behavior and differences in clustering properties between AGN and starburst galaxies.

Contribution

It provides the first detailed autocorrelation analysis of a large radio galaxy sample combining optical and radio survey data.

Findings

Autocorrelation function follows a power law with a correlation length of 2-15h^{-1} Mpc.

No significant difference in correlation length between AGN and starburst galaxies.

Different gamma values indicate varying clustering strengths for AGN and SB galaxies.

Abstract

We discuss the autocorrelation function $/zeta (r)$ for the sample 1157 radio-identified galaxies . The sample of galaxies is based on the Las Campanas Redshift Survey (LCRS) and 1.4 Ghz NRA)-VLA Sky Survey (NVSS) catalog of the radio sources. For separation $2-15h^{-1}$ Mpc autocorrelation function $/zeta (r)$$\gamma (s)$ can be approximated by the power law with correlation length and slope $-\gamma (s)=-1.8$. There are no clearly differences for correlation length between AGN and SB galaxies while value $\gamma$ for both samples are different: $\gamma=2.4$ for AGN and $\gamma=1.7$ for SB.