A Chandra detection of diffuse hard X-ray emission associated with the lobes of the radio galaxy 3C 452

N. Isobe, M. Tashiro, K. Makishima, N. Iyomoto, M. Suzuki, M. M. Murakami, M. Mori, K. Abe

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

An 80 ks Chandra ACIS observation of the radio galaxy 3C 452 is reported. A diffuse X-ray emission associated with the lobes has been detected with high statistical significance, together with the X-ray nucleus of the host galaxy. The 0.5-5 keV ACIS spectrum of the diffuse emission is described by a two-component model, consisting of a soft thermal plasma emission from the host galaxy halo and a hard nonthermal power-law component. The hard component is ascribed to the inverse Comptonization of cosmic microwave background photons by the synchrotron-emitting electrons in the lobes, because its spectral energy index, 0.68 ± 0.28, is consistent with the radio synchrotron index, 0.78. These results reveal a significant electron dominance in the lobes. The electrons are inferred to have a relatively uniform distribution, while the magnetic field is compressed toward the lobe periphery.

Original languageEnglish
Pages (from-to)L111-L115
JournalAstrophysical Journal
Volume580
Issue number2 II
DOIs
Publication statusPublished - Dec 1 2002

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Isobe, N., Tashiro, M., Makishima, K., Iyomoto, N., Suzuki, M., Murakami, M. M., ... Abe, K. (2002). A Chandra detection of diffuse hard X-ray emission associated with the lobes of the radio galaxy 3C 452. Astrophysical Journal, 580(2 II), L111-L115. https://doi.org/10.1086/345658