Kolmogorov analysis detecting radio and Fermi gamma-ray sources in cosmic microwave background maps

Abstract

The Kolmogorov stochasticity parameter is shown to act as a tool to detect point sources in the cosmic microwave background (CMB) radiation temperature maps. Kolmogorov CMB map constructed for the WMAP's 7-year datasets reveals tiny structures which in part coincide with point radio and Fermi/LAT gamma-ray sources. In the first application of this method, we identified several sources not present in the then available 0FGL Fermi catalog. Subsequently they were confirmed in the more recent and more complete 1FGL catalog, thus strengthening the evidence for the power of this methodology.

A weakly random Universe?

“…Application of Kolmogorov's approach will complement those studies by quantifying the cumulative degree of correlations in the CMB signal. Kolmogorov's parameter is also efficient in detecting point sources, radio and Fermi/LAT gammaray, and other anomalies in CMB maps (Gurzadyan et al 2010;); i.e., this method enables the separation of the cosmological signal from non-cosmological ones.…”

“…The 2D-balls obviously also cover the cold spot regions studied in (Jarosik et al 2010;). The point sources revealed in CMB maps (Gurzadyan et al 2010) are also covered; however, they cannot contribute to the distribution of Φ, not only because of their small quantity but also mainly because of their point-like feature, i.e. small number pixelization.…”

Recent Developments in Astrophysical and Cosmological Exploitation of Microwave Surveys

“…[74] and references therein), including nearby galaxies. Recently, the 7-year WMAP data have been used to trace the disk and the halo of the M31 galaxy 75 .…”

Recent Developments in Astrophysical and Cosmological Exploitation of Microwave Surveys

“…As discussed above, WMAP and Planck data can be used to get information about point like astrophysical sources (see e.g. [74] and references therein), including nearby galaxies. Recently, the 7-year WMAP data have been used to trace the disk and the halo of the M31 galaxy 75 .…”