RT Journal Article ID 436e364b396ba1f7 A1 Miroshnichenko, A. P. T1 PHYSICAL PARAMETERS OF RADIO SOURCES WITH STEEPLY RISING DECAMETER WAVELENGTH SPECTRA JF Radio Physics and Radio Astronomy JO RPRA YR 2012 FD 2012-08-13 VO 3 IS 3 SP 215 OP 221 K1 spectral index K1 radio frequency spectrum K1 luminosity K1 galaxies K1 quasars AB 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. PB Begell House LK https://www.dl.begellhouse.com/journals/6fd1549c0e2c05da,4e9409a35a49a927,436e364b396ba1f7.html