X-Ray Emission from the Quasar PKS 1127-145: Comptonized IR Photons on Parsec Scales

Abstract

We model the broad-band spectral energy distribution of the innermost "core-jet" region of the redshift z=1.187 quasar PKS 1127-145. We propose a scenario where 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.

arXiv comment13 pages, 1 figure, accepted to ApJ Letters

References in corpus (20)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• A Unifying View of the Spectral Energy Distributions of Blazars
• The Soft X-Ray Properties of a Complete Sample of Optically Selected Quasars II. Final Results
• X-ray Spectra of a large sample of Quasars with ASCA
• Comptonization of Infrared Radiation from Hot Dust by Relativistic Jets in Quasars
• Multi-Epoch VLBA Observations of EGRET-Detected Quasars and BL Lac Objects: Superluminal Motion of Gamma-Ray Bright Blazars
• A complete sample of GHz-Peaked-Spectrum radio sources and its radio properties
• Transformation Properties of External Radiation Fields, Energy-Loss Rates and Scattered Spectra, and a Model for Blazar Variability
• Chandra Discovery of a 300 kpc X-ray Jet in the GPS Quasar PKS1127-145
• Modeling the production of flares in $\gamma$-ray quasars
• On the Nature of MeV-blazars
• Gamma-loud quasars: a view with BeppoSAX
• Gamma-ray loud quasars: a view with BeppoSAX
• PMN J0525-3343: soft X-ray spectral flattening in a blazar at z=4.4
• The blazar GB1428+4217: a warm absorber at z=4.72?
• Chandra Detection of X-ray Absorption Associated with a Damped Lyman Alpha System
• The ASCA spectrum of the z=4.72 blazar, GB 1428+4217
• The 3-53 keV Spectrum of the Quasar 1508+5714: X-rays from z = 4.3
• 150 keV Emission from PKS2149-306 with BeppoSAX
• X-ray emission from GPS/CSS sources

Cited by in corpus (12)

• Location of gamma-ray Flare Emission in the Jet of the BL Lacertae Object OJ287 more than 14pc from the Central Engine
• On the Evolution of and High-Energy Emission from GHz-Peaked-Spectrum Sources
• X-ray Properties of the GigaHertz-Peaked and Compact Steep Spectrum Sources
• Relativistic Outflow Drives Gamma-Ray Emission in 3C345
• The 300 kpc Long X-ray Jet in PKS 1127-145, z=1.18 Quasar: Constraining X-ray Emission Models
• Bulk Comptonization spectra in blazars
• Jet Emission in Young Radio Sources: a Fermi-LAT Gamma-ray View
• The broad-band X-ray spectrum of the blazar PKS B1830-211 by Chandra and INTEGRAL
• Suzaku Observations of Luminous Quasars: Revealing the Nature of High-Energy Blazar Emission in Quiescent States
• Broad-band Jet Emission in Young and Powerful Radio Sources: the Case of the CSS Quasar 3C 186
• Iris: an Extensible Application for Building and Analyzing Spectral Energy Distributions
• A Deep XMM-Newton Observation of the Quasar 3C 287