Correlation properties of the maps of the NVSS survey and WMAP ILC

TL;DR

This study analyzes the correlation properties of WMAP ILC and NVSS survey maps on various scales, identifying significant domains and comparing them with simulated maps to assess statistical agreement.

Contribution

It introduces a method for analyzing correlation domains in WMAP and NVSS maps and compares their distribution with simulations to evaluate statistical significance.

Findings

Number of correlation domains matches simulations

Correlation domains are statistically consistent with random distribution

Identified significant correlation regions in the maps

Abstract

In this paper we study one-dimensional sections of the maps of WMAP ILC and of the NVSS survey on scale lengths of 0.75, 3, 4.5, and 6.75 degrees and analyze the correlation properties of the sections. On these maps we identify the domains where the absolute value of the correlation coefficient exceeds 0.5. The catalog of such domains is presented. It is shown that the number of the domains agrees with the number of such domains on simulated maps and this fact may be indicative of just statistical agreement of the arrangement of the domains considered.