On the detection of point sources in Planck LFI 70 GHz CMB maps based on cleaned K-map

TL;DR

This paper applies a point source detection method to Planck LFI 70 GHz CMB maps, identifying known sources and proposing new candidates using Kolmogorov parameters.

Contribution

It adapts and applies a novel detection technique based on Tegmark's method and Kolmogorov descriptors to Planck data, revealing potential new point sources.

Findings

Most detected sources match known sources

Identified 9 new point source candidates

Demonstrated effectiveness of Kolmogorov-based detection

Abstract

We use the Planck LFI 70GHz data to further probe point source detection technique in the sky maps of the cosmic microwave background (CMB) radiation. The method developed by Tegmark et al. for foreground reduced maps and the Kolmogorov parameter as the descriptor are adopted for the analysis of Planck satellite CMB temperature data. Most of the detected points coincide with point sources already revealed by other methods. However, we have also found 9 source candidates for which still no counterparts are known.