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Astrophysical Bulletin

, Volume 74, Issue 3, pp 247–256 | Cite as

Radio Sources of Random Sky Region

  • A. A. Zaporozhetz
  • O. V. VerkhodanovEmail author
Article
  • 2 Downloads

Abstract

The paper presents the statistical data analysis of radio astronomic surveys in the sky region of a size of 177▭°at high galactic latitudes. We divided the region into four sectors equal in area and analyzed the observed properties of radio sources and the cosmic microwave background in each sector. The distribution of physical parameters (flux density, radio spectrum type, spectral index of radio sources) as well as the properties of the cosmic microwave background within the region of a size of 177▭° are shown to correspond to the cosmological principle, while the number of radio sources and their morphological types significantly differ in various areas. This points that studying sky regions of a given size, when analyzing the cosmic microwave background, can yield a statistically correct picture at high multipoles (corresponding to the size of a region), while generalization of the object calculations over the whole sky and their evolutionary morphological characteristics over the total population of sources is not obvious. We detected a positive shift in the response distribution in the direction to the radio sources on the cosmic microwave background map at the 2σ level repeated in all four sectors. According to the analysis of the multi-frequency Planck maps, a catalog has been compiled containing 120 new for galaxy cluster candidates with the Sunyaev—Zeldovich effect, 46 of which may be distant (z > 0.7).

Key words

radio sources surveys 

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Notes

Funding

The authors are grateful to the “Traektoria” foundation for supporting scientific, cultural, and educational initiatives (https://doi.org/www.traektoriafdn.ru).

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.“Traektoria” Astrophysical SchoolMoscowRussia
  2. 2.Special Astrophysical ObservatoryRussian Academy of SciencesNizhnii ArkhyzRussia

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