Non-thermal emission in lobes of radio galaxies: III. 3C 98, Pictor A, DA 240, Cygnus A, 3C 326, and 3C 236

Abstract

Recent analyses of the broad spectral energy distributions (SED) of extensive lobes of local radio-galaxies have confirmed the leptonic origin of their Fermi/LAT gamma-ray emission, significantly constraining the level of hadronic contribution. SED of distant (D > 125 Mpc) radio-galaxy lobes are currently limited to the radio and X-ray bands, hence give no information on the presence of non-thermal (NT) protons but are adequate to describe the properties of NT electrons. Modeling lobe radio and X-ray emission in 3C 98, Pictor A, DA 240, Cygnus A, 3C 326, and 3C 236, we fully determine the properties of intra-lobe NT electrons and estimate the level of the related gamma-ray emission from Compton scattering of the electrons off the superposed Cosmic Microwave Background, Extragalactic Background Light, and source-specific radiation fields.

arXiv comment8 pages, 4 figures; a few typos corrected; several missing references added

References in corpus (32)

• Energy spectra of gamma-rays, electrons and neutrinos produced at proton-proton interactions in the very high energy regime
• A Systematic Study of Radio-Induced X-ray Cavities in Clusters, Groups, and Galaxies
• The extragalactic background light revisited and the cosmic photon-photon opacity
• Planetary nebulae as tracers of galaxy stellar populations
• Measurement of the Extragalactic Background Light using MAGIC and Fermi-LAT gamma-ray observations of blazars up to z = 1
• The Cavity of Cygnus A
• Shocked Molecular Hydrogen in the 3C 326 Radio Galaxy System
• Deep Chandra observations of Pictor A
• Galactic star-formation rates gauged by stellar end-products
• Far-Infrared Emission From E and E/S0 Galaxies
• The AMIGA sample of isolated galaxies III. IRAS data and infrared diagnostics
• Numerical modelling of the lobes of radio galaxies in cluster environments - III. Powerful relativistic and nonrelativistic jets
• The Chandra view of extended X-ray emission from Pictor A
• The Cocoon Shocks of Cygnus A: Pressures and Their Implications for the Jets and Lobes
• The first catalog of Fermi-LAT sources below 100 MeV
• Radio Lobes of Pictor A: an X-ray spatially resolved Study
• The XMM-Newton Detection of Diffuse Inverse Compton X-rays from Lobes of the FR-II Radio Galaxy 3C98
• Modeling the Infrared Emission in Cygnus A
• The 9.7 Micron Silicate Dust Absorption Toward the Cygnus A Nucleus and the Inferred Location of the Obscuring Dust
• Evidence of non-thermal X-ray emission from radio lobes of Cygnus A
• Discovery of gamma-ray emission from the Broad Line Radio Galaxy Pictor A
• Detection of X-ray Emission from the Eastern Radio Lobe of PICTOR A
• Estimates of relativistic electron and proton energy densities in starburst galactic nuclei from radio measurements
• Suzaku observation of the giant radio galaxy 3C 326
• Imaging the AGN Torus in Cygnus
• Detection of non-thermal X-ray emission in the lobes and jets of Cygnus A
• Suzaku measurement of electron and magnetic energy densities in the east lobe of the giant radio galaxy DA 240
• Self-consistent evolution of gas and cosmic rays in Cygnus A and similar FR II classic double radio sources
• Nonthermal emission in the lobes of Fornax A
• Non-thermal emission in radio galaxy lobes: II. Centaurus A, Centaurus B, and NGC 6251
• Synchrotron and Compton Spectra from a Steady-State Electron Distribution
• First Dynamic Computation of Synchrotron Emission from the Cygnus A Radio Cavity; Evidence for Electron Pair Plasma in Cavity

Cited by in corpus (4)

• Modeling the Extragalactic Background Light and the Cosmic Star Formation History
• On the significance of relativistically hot pairs in the jets of FR II radio galaxies
• IGR J18249-3243: a new GeV-emitting FR II and the emerging population of high energy radio galaxies
• Echoes of the past: ultra-high energy cosmic rays accelerated by radio galaxies, scattered by starburst galaxies