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

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.

arXiv comment11 pages, 3 figures, Accepted for publication in Modern Physics Letters A. arXiv admin note: substantial text overlap with arXiv:1206.7121

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