Multifrequency study of GHz-peaked spectrum sources

Abstract

Gigahertz-Peaked spectrum (GPS) sources are compact active galactic nuclei, presumably young precursors of bright radio sources. The study of GPS radio properties provides information about the features of synchrotron radiation in extragalactic sources. Also in applied research GPS sources are useful as compact stationary radio sources in the sky for astrometric purposes. This paper presents the results of a multifrequency GPS study based on quasi-simultaneous measurements with the RATAN-600 radio telescope during the 2006-2017. The catalog containing spectral flux densities measured at six frequencies (1.1, 2.3, 4.8, 7.7/8.2, 11.2, and 21.7 GHz) have been obtained. In addition, for the analysis of radio spectra, data from the following low-frequency surveys have been used: GLEAM (GaLactic and Extragalactic All-sky Murchison widefield array survey) and TGSS (Tata institute for fundamental research GMRT Sky Survey) and high-frequency measurements from Planck survey. A total number of 164 GPS and candidates to GPS have been identified (17 of them are new discoveries), which makes up a small fraction of GPS in the initial sample of bright AGNs, about 2%. The physical properties and formation conditions of synchrotron radiation is found to be quite different in GPS of different AGN types. The deficit of distant GPS ($z>2$) with low maximum frequencies (less than 1 GHz) is confirmed. The existing 'size - peak frequency' anticorrelation is continuous. The continuum radio spectra are found to become statistically steeper with increasing redshift.

arXiv comment30 pages, including 11 pages of radio spectra as the supplementary material

References in corpus (36)

• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
• Planck 2013 results. I. Overview of products and scientific results
• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey I: A low-frequency extragalactic catalogue
• Roma-BZCAT: A multifrequency catalogue of Blazars
• An Accurate Flux Density Scale from 1 to 50 GHz
• The Dynamic Evolution of Young Extragalactic Radio Sources
• Planck 2013 results. XXVIII. The Planck Catalogue of Compact Sources
• A complete sample of GHz-Peaked-Spectrum radio sources and its radio properties
• Proper Motions in Compact Symmetric Objects
• Extragalactic Peaked-Spectrum Radio Sources at Low Frequencies
• The Third VLBA Calibrator Survey
• The Fifth VLBA Calibrator Survey: VCS5
• The Fourth VLBA Calibrator Survey - VCS4
• Planck 2015 results. XXVI. The Second Planck Catalogue of Compact Sources
• Survey of Instantaneous 1-22 GHz Spectra of 550 Compact Extragalactic Objects with Declinations from -30deg to +43deg
• Spectral Ages of CSOs and CSS Sources
• High Frequency Peakers: young radio sources or flaring blazars?
• A Sample of Ultra Steep Spectrum Sources Selected from the Westerbork In the Southern Hemisphere (WISH) survey
• A new sample of faint Gigahertz Peaked Spectrum radio sources
• Planck early results XIV: ERCSC validation and extreme radio sources
• Physical properties in young radio sources. VLBA observations of high frequency peaking radio sources
• On the nature of bright compact radio sources at z>4.5
• New candidate GHz Peaked Spectrum and Compact Steep Spectrum Sources
• VLBI observations of the CORALZ sample: young radio sources at low redshift
• Planck intermediate results. XXV. The Andromeda Galaxy as seen by Planck
• Constraints on Evolutionary Properties of GHz Peaked Spectrum Galaxies
• An all-sky optical catalogue of radio / X-ray sources
• Compact radio cores: from the first black holes to the last
• Planck intermediate results. VII. Statistical properties of infrared and radio extragalactic sources from the Planck Early Release Compact Source Catalogue at frequencies between 100 and 857 GHz
• GPS/CSS radio sources and their relation to other AGN
• RATAN-600 multi-frequency data for the BL Lac objects
• Quasi-simultaneous multi-frequency observations of inverted-spectrum GPS candidate sources
• What are the megahertz peaked-spectrum sources?
• Planck intermediate results. XLV. Radio spectra of northern extragalactic radio sources
• Observations of the bright radio sources in the North Celestial Pole region at the RATAN-600 radio telescope

Cited by in corpus (16)

• High-redshift quasars at $z\ge 3$ -- I. Radio spectra
• Caltech-NRAO Stripe 82 Survey (CNSS) Paper V: AGNs that transitioned to radio-loud state
• Caltech-NRAO Stripe 82 Survey (CNSS). IV. The Birth of Radio-loud Quasar 013815+00
• Radio Jet Proper-motion Analysis of Nine Distant Quasars above Redshift 3.5
• A compact symmetric radio source born at one-tenth the current age of the Universe
• The RATAN-600 multi-frequency catalogue of blazars -- BLcat
• Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600
• Kpc-scale Radio Structure in $z\sim 0.25$ Radio-Quiet QSOs
• High-redshift quasars at $z\ge 3$: radio variability and MPS/GPS candidates
• Dim cores of radio-bright AGN jets: VLBI and Gaia astrometry pinpoint different parsec-scale features
• Revisiting the Dragonfly Galaxy I. High-resolution ALMA and VLA Observations of the Radio Hotspots in a Hyper-luminous Infrared Galaxy at $z=1.92$
• The relationship between FR0 radio galaxies and GPS sources
• Radio properties of high-redshift galaxies at $z\ge 1$
• Radio and Optical Properties of the blazar PKS 1614+051 at z=3.21
• Multifrequency study of gigahertz-peaked spectrum sources with RATAN-600
• The dependence of the fraction of radio luminous quasars on redshift and its theoretical implications