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Near Infrared Micro-variability of Radio-loud Quasars

Published online by Cambridge University Press:  05 March 2013

Matthew Whiting ,
Alicia Oshlack  and
Rachel Webster
Matthew Whiting
Affiliation:
Astrophysics Group, School of Physics, University of Melbourne, Victoria 3010, Australia; mwhiting@physics.unimelb.edu.au
Alicia Oshlack
Affiliation:
Astrophysics Group, School of Physics, University of Melbourne, Victoria 3010, Australia; aoshlack@physics.unimelb.edu.au
Rachel Webster
Affiliation:
Astrophysics Group, School of Physics, University of Melbourne, Victoria 3010, Australia; rwebster@physics.unimelb.edu.au
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Abstract

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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.

Keywords

quasars: individual (PKS 2243–123)BL Lacertae objects: individual (PKS 2240–260, PKS 2233–148)
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 19 , Issue 2 , 2002 , pp. 222 - 227
Copyright
Copyright © Astronomical Society of Australia 2002

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