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

doi:10.1086/381497

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

Steward Observatory

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	L27-L30
Journal	Astrophysical Journal
Volume	600
Issue number	1 II
DOIs	https://doi.org/10.1086/381497
State	Published - 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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10.1086/381497

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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.",

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T1 - X-ray emission from the quasar PKS 1127-145

T2 - Comptonized infrared photons on parsec scales

AU - Błazejowski, Michał

AU - Siemiginowska, Aneta

AU - Sikora, Marek

AU - Moderski, Rafał

AU - Bechtold, Jill

PY - 2004/1/1

Y1 - 2004/1/1

N2 - 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.

AB - 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.

KW - Gamma rays: theory

KW - Infrared: galaxies

KW - Quasars: individual (PKS 1127-145)

KW - X-rays: general

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

Abstract

Keywords

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