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Radio Physics and Radio Astronomy

年間 4 号発行

ISSN 印刷: 2152-274X

ISSN オンライン: 2152-2758

PHYSICAL PARAMETERS OF RADIO SOURCES WITH STEEPLY RISING DECAMETER WAVELENGTH SPECTRA

巻 3, 発行 3, 2012, pp. 215-221
DOI: 10.1615/RadioPhysicsRadioAstronomy.v3.i3.40
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要約

A sample of extragalactic objects with spectral index magnitudes α ≥ 1, which have been taken from the UTR-2 catalog, is used to analyze the radio sources characterized at decameter wavelengths by a steep rise of their spectra (known as spectral type C+). In the framework of the ΛCDM model of the Universe, luminosities of the galaxies and quasars belonging to the sample have been estimated for the decameter, centimeter, and optical wave ranges, and estimates obtained for magnetic field strengths, linear sizes and characteristic ages of the objects. Similar to the sources which show steep linear spectra (spectral type S), the galaxies and quasars with type C+ spectra show high values of the radio luminosity and an extended structure at radio frequencies. A relation has been established between linear sizes of the type C+ sources and their low frequency luminosities. A significant cosmological evolution of luminosity has been revealed for the sources considered.

によって引用された
  1. Miroshnichenko Alla, Independent estimates of energies of steep-spectrum radio sources, Proceedings of the International Astronomical Union, 9, S304, 2013. Crossref

  2. Miroshnichenko Alla P., Evolution of low-frequency contribution in emission of steep-spectrum radio sources, Proceedings of the International Astronomical Union, 11, S308, 2014. Crossref

  3. Miroshnichenko Alla P., Jet propagation velocity and environment density of giant radio sources with steep radio spectrum, Astrophysics and Space Science, 364, 5, 2019. Crossref

  4. Miroshnichenko A. P., ENVIRONMENT DENSITY OF A GIANT RADIO STRUCTURE FOR GALAXIES AND QUASARS WITH STEEP RADIO SPECTRA, Radio physics and radio astronomy, 26, 2, 2021. Crossref

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