RATAN-600 multi-frequency data for the BL Lac objects

Abstract

We present a new catalogue of the RATAN-600 multi-frequency measurements for BL Lac objects. The purpose of this catalogue is to compile the BL Lac multi-frequency data that is acquired with the RATAN-600 simultaneously at several frequencies. The BL Lac objects emit a strongly variable and polarized non-thermal radiation across the entire electromagnetic spectrum from radio to gamma-rays and represent about one percent of known AGNs. They belong to the blazar population and differ from other blazars featureless optical spectrum, which sometimes have absorption lines, or have weak and narrow emission lines. One of the most effective ways of studying the physics of BL Lacs is the use of simultaneous multi-frequency data. The multi-frequency broadband radio spectrum was obtained simultaneously with an accuracy of up to 1-2 minutes for four to six frequencies: 1.1, 2.3, 4.8, 7.7, 11.2, and 21.7 GHz. The catalogue is based on the RATAN-600 observations and on the data from: equatorial coordinate and redshift, R-band magnitude, synchrotron peak frequency, SED classes and object type, literature. The present version of the catalogue contains RATAN-600 flux densities measurements over nine years (2006-2014), radio spectra at different epochs, and their parameters for more than 300 BL Lacs objects and candidates. The BL Lacs list is constantly updated with new observational data of RATAN-600.

References in corpus (10)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• The Connection between X-ray- and Radio-Selected BL Lacertae Objects
• Roma-BZCAT: A multifrequency catalogue of Blazars
• Spectral energy distributions of a large sample of BL Lacertae objects
• Optically identified BL Lacertae objects from the Sloan Digital Sky Survey
• A Large Sample of BL Lacs from SDSS and FIRST
• 37 GHz observations of a large sample of BL Lacertae objects
• ROXA: a new multi-frequency selected large sample of blazars with SDSS and 2dF optical spectroscopy
• Observations of the bright radio sources in the North Celestial Pole region at the RATAN-600 radio telescope
• Optical and near-infrared imaging of faint Gigahertz Peaked Spectrum sources

Cited by in corpus (17)

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• Multifrequency study of GHz-peaked spectrum sources
• Building a cluster: shocks, cavities, and cooling filaments in the group-group merger NGC 6338
• The observed radio/gamma-ray emission correlation for blazars with the Fermi-LAT and the RATAN-600 data
• The RATAN-600 multi-frequency catalogue of blazars -- BLcat
• Simultaneous spectra and radio properties of BL Lac's
• Multi-band Cross-correlated Radio Variability of the Blazar 3C 279
• Optical and Radio Variability of the Blazar S4 0954+658
• A Systematic Search for Reddest Far-infrared and Sub-millimeter Galaxies: revealing dust-embedded starbursts at high redshifts
• The synchrotron component study in a spectral energy distribution of blazars
• Cluster analysis of the Roma-BZCAT blazars
• Multi-wavelength observations of the BL Lac object Fermi J1544-0649: one year after its awakening
• Magnetically Driven Relativistic Jet in the High-Redshift Blazar OH~471
• Multifrequency study of gigahertz-peaked spectrum sources with RATAN-600