Near-infrared micro-variability of radio-loud quasars

Abstract

We observed three AGN from the Parkes Half-Jansky Flat-spectrum Sample at near-infrared (NIR) wavelengths to search for micro-variability. In one source, the blue quasar PKS 2243-123, good evidence for NIR micro-variability was found. In the other two sources, PKS 2240-260 and PKS 2233-148, both BL Lacertae objects, no such evidence of variability was detected. We discuss the implications of these observations for the various mechanisms that have been proposed for micro-variability.

arXiv commentAccepted for publication in P.A.S.A., 9 pages including 5 figures

References in corpus (6)

• The Parkes Half-Jansky Flat-Spectrum Sample
• A Sample-oriented Catalogue of BL Lacertae Objects
• The Optical/Near-IR Colours of Red Quasars
• Red synchrotron jets in Parkes quasars
• A 5-GHz Southern Hemisphere VLBI Survey of Compact Radio Sources - II
• X-ray properties of the Parkes sample of flat-spectrum radio sources: dust in radio-loud quasars?

Cited by in corpus (2)

• The spectral energy distribution of PKS 2004-447: a compact steep-spectrum source and possible radio-loud narrow-line Seyfert 1 galaxy
• Primordial black hole detection through diffractive microlensing