Discovery of an extended X-ray jet in AP Librae

Abstract

Chandra observations of the low-energy peaked BL Lac object AP Librae revealed the clear discovery of a non-thermal X-ray jet. AP Lib is the first low energy peaked BL Lac object with an extended non-thermal X-ray jet that shows emission into the VHE range. The X-ray jet has an extension of ~15'' (~ 14 kpc). The X-ray jet morphology is similar to the radio jet observed with VLA at 1.36 GHz emerging in south-east direction and bends by 50 degrees at a distance of 12'' towards north-east. The intensity profiles of the X-ray emission are studied consistent with those found in the radio range. The spectral analysis reveals that the X-ray spectra of the core and jet region are both inverse Compton dominated. This adds to a still small sample of BL Lac objects whose X-ray jets are IC dominated and thus more similar to the high luminosity FRII sources than to the low luminosity FRI objects, which are usually considered to be the parent population of the BL Lac objects.

accepted on July 24, 2013 for publication in ApJ (version pre-proof corrections)

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Cited by in corpus (12)

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• The high-energy $\gamma$-ray emission of AP Librae
• The TeV emission of Ap Librae: a hadronic interpretation and prospects for CTA
• Offsets between X-ray and Radio Components in X-ray Jets: The AtlasX
• Circumnuclear Dust in AP Librae and the source of its VHE emission
• From Radio to TeV: The surprising Spectral Energy Distribution of AP Librae
• Constraints on Proton Synchrotron Origin of Very High Energy Gamma Rays from the Extended Jet of AP Librae
• Megaparsec-scale Radio Structure Associated with a Hybrid Blazar SBS B1646+499: Episodic Jet Activity with Precessing Axis
• Multi-wavelength study of OT 081: broadband modelling of a transitional blazar
• On the origin of two unidentified radio/X-ray sources discovered with XMM-Newton
• The Extended Jet In AP Librae As The Source Of The VHE $\gamma$-ray Emission