X-ray emission from the quasar PKS 1127-145: Comptonized infrared photons on parsec scales

Michał Błazejowski, Aneta Siemiginowska, Marek Sikora, Rafał Moderski, Jill Bechtold

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

We model the broadband spectral energy distribution of the innermost "core-jet" region of the redshift z = 1.187 quasar PKS 1127-145. We propose a scenario in which the high-energy photons are produced via the Compton scattering of thermal IR radiation by the relativistic particles in a parsec-scale jet. The high-energy spectrum, together with the observed radio variability and superluminal expansion, suggest that PKS 1127-145 may be a blazar, despite the fact that its optical/UV component is likely dominated by thermal radiation from an accretion disk. The relation of PKS 1127-145 to MeV blazars is discussed.

Original languageEnglish (US)
Pages (from-to)L27-L30
JournalAstrophysical Journal
Volume600
Issue number1 II
DOIs
StatePublished - Jan 1 2004

Keywords

  • Gamma rays: theory
  • Infrared: galaxies
  • Quasars: individual (PKS 1127-145)
  • X-rays: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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