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The RATAN-600 Multi-Frequency Catalogue of Blazars—BLcat

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Abstract

In this paper we present the RATAN-600 multi-frequency catalogue of blazars, an updated version of the BLcat: the RATAN-600 multi-frequency catalogue of BL Lacertae objects. The main novelty in the catalogue is an extension of the sample with flat-spectrum radio quasars (FSRQs), thus currently it contains more than 1700 blazars of different types. The main feature of the BLcat is a compilation of radio continuum data for blazars based on the RATAN-600 quasi-simultaneous measurements at frequencies of 1.2, 2.3, 4.7, 7.7/8.2, 11.2, and 21.7/22.3 GHz. We additionally supplement the catalogue with the radio data from external sources to provide an opportunity to more complete study of radio spectra and radio light curves. For the convenience of users, we developed tools to calculate the spectral index, variability index, and radio luminosity. We briefly describe basic radio properties of blazar subsamples of the catalogue: spectral classification, spectral indices, flux density variability, and radio luminosity.

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Notes

  1. https://www.sao.ru/blcat/.

  2. https://www.sao.ru/cats/.

  3. http://ned.ipac.caltech.edu.

  4. https://vizier.u-strasbg.fr/viz-bin/VizieR.

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ACKNOWLEDGEMENTS

This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration; the CATS database, available at the Special Astrophysical Observatory website; the SIMBAD database, operated at CDS, Strasbourg, France. We are grateful to the ASDC web Tools, particularly to Roma-BZCAT—the Multi-frequency Blazar Catalogue (http://www.asdc.asi.it/bzcat/). This research made use of astroquery (Ginsburg et al., 2019) and astropy, a community-developed core Python package for astronomy (Price-Whelan et al., 2018; Robitaille et al., 2013).

Funding

This work is supported in the framework of the national project “Science” by the Ministry of Science and Higher Education of the Russian Federation under contract no. 075-15-2020-778.

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Authors and Affiliations

  1. Special Astrophysical Observatory, Russian Academy of Sciences, 369167, Nizhnii Arkhyz, Russia

    Yu. V. Sotnikova, T. V. Mufakharov, M. G. Mingaliev, R. Y. Udovitskiy, T. A. Semenova, A. K. Erkenov, N. N. Bursov, A. G. Mikhailov & Yu. V. Cherepkova

  2. Kazan (Volga Region) Federal University, 420008, Kazan, Russia

    T. V. Mufakharov & M. G. Mingaliev

  3. Institute of Applied Astronomy, Russian Academy of Sciences, 191187, St. Petersburg, Russia

    M. G. Mingaliev

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  1. Yu. V. Sotnikova
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  2. T. V. Mufakharov
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Correspondence to Yu. V. Sotnikova.

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Sotnikova, Y.V., Mufakharov, T.V., Mingaliev, M.G. et al. The RATAN-600 Multi-Frequency Catalogue of Blazars—BLcat. Astrophys. Bull. 77, 361–371 (2022). https://doi.org/10.1134/S1990341322040149

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