Open AccessInverse Compton X‐rays from the radio galaxy 3C 219
Author(s) -
Comastri A.,
Brunetti G.,
Dallacasa D.,
Bondi M.,
Pedani M.,
Setti G.
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06561.x
Subject(s) - physics , compton scattering , cosmic microwave background , astrophysics , radio galaxy , synchrotron radiation , electron , photon , relativistic particle , galaxy , x shaped radio galaxy , microwave , magnetic field , synchrotron , cosmic background radiation , cosmic ray , astronomy , nuclear physics , optics , anisotropy , quantum mechanics
ABSTRACT We report the results from a Chandra observation of the powerful nearby ( z = 0.1744) radio galaxy 3C 219. We find evidence for non‐thermal X‐ray emission from the radio lobes which fits fairly well with a combination of inverse Compton scattering of Cosmic Microwave Background radiation and of nuclear photons with the relativistic electrons in the lobes. The comparison between radio synchrotron and IC emission yields a magnetic field strength significantly lower (∼3) than that calculated under minimum energy conditions; the source energetics is then dominated by the relativistic particles.