Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format

Abstract

The goal of this paper is to investigate the flux and spectral index distribution of FR II radio galaxy 4C 14.11. We focused on the distribution of flux and spectral indices over the lobes, as well as in their hot spots. For that purpose, we used publicly available observations of this radio galaxy given at 1450 and 8440 MHz. Particularly, we used Leahy's Atlas of radio-emitting double radio sources, Jodrell Bank Centre for Astrophysics in Manchester, as well as NASA/IPAC Extragalactic Database. We found that the non-thermal (synchrotron) radiation dominates over the areas of the lobes. Distinction between hot spots and rest of the lobes are much smaller in the spectral index than in the flux. We also found that over the inner parts of both lobes, spectral index $\alpha$ is flat in average and significantly higher than 1.2, indicating that 4C 14.11 is old AGN.

8 pages, 5 figures, 1 FITS file. Accepted for publication in Adv. Space Res

References in corpus (7)

• Radio spectral properties and jet duty cycle in the restarted radio galaxy 3C388
• A new look at old friends. I. Imaging classical radio galaxies with uGMRT and MeerKAT
• Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz
• X-ray Emission From Accretion Disks of AGN: Signatures of Supermassive Black Holes
• The Brightness of the Galactic Radio Loops at 1420 MHz: Some Indications for the Existence of Loops V and VI
• SNR radio spectral index distribution and its correlation with polarization: a case study of Lupus Loop
• Temperature, brightness and spectral index of the Cygnus radio loop