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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; [email protected]
Alicia Oshlack
Affiliation:
Astrophysics Group, School of Physics, University of Melbourne, Victoria 3010, Australia; [email protected]
Rachel Webster
Affiliation:
Astrophysics Group, School of Physics, University of Melbourne, Victoria 3010, Australia; [email protected]
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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

References

de Diego, J. A., et al. 1998, ApJ, 501, 69 Google Scholar
Drinkwater, M. J., et al. 1997, MNRAS, 284, 85 Google Scholar
Francis, P. J., Whiting, M. T., & Webster, R. L. 2000, PASA, 17, 1, 56 (FWW)Google Scholar
Gopal-Krishna, & Wiita, P. J. 1992, A&A, 259, 109 Google Scholar
Gopal-Krishna, , et al. 2000, MNRAS, 314, 815 Google Scholar
Heidt, J., & Wagner, S. J. 1996, A&A, 305, 42 Google Scholar
Hewitt, A., & Burbidge, G. 1993, ApJSS, 87, 451 CrossRefGoogle Scholar
Jang, M., & Miller, H. R. 1997, AJ, 114, 565 Google Scholar
Johnston, K. J., et al. 1995, AJ, 110, 880 Google Scholar
Kovalev, Y. Y., et al. 1999, A&AS, 139, 545 Google Scholar
Mangalam, A. V., & Wiita, P. J. 1993, ApJ, 406, 420 Google Scholar
Marscher, A. P., & Gear, W. K. 1985, ApJ, 298, 114 CrossRefGoogle Scholar
McGregor, P., Hart, J., Downing, M., Hoadley, D., & Bloxham, G. 1994, in Infrared Astronomy with Arrays: The Next Generation, ed. I. S. McLean (Dordrecht: Kluwer), p. 299 Google Scholar
Miller, H. R., & Noble, J. C. 1996, in Blazar Continuum Variability, ASP Conference Series 110, eds H. R. Miller, J. R. Webb, & J. C. Noble (San Francisco: ASP), 17 Google Scholar
Padovani, P., & Giommi, P. 1995, MNRAS, 277, 1477 Google Scholar
Qian, S. J., et al. 1991, A&A, 241, 15 Google Scholar
Romero, G. E., Cellone, S. A., & Combi, J. A. 1999, A&AS, 135, 477 Google Scholar
Schmidt, M., & Green, R. F. 1983, ApJ, 269, 352 Google Scholar
Shen, Z., et al. 1998, AJ, 115, 1357 Google Scholar
Siebert, J., et al. 1998, MNRAS, 301, 261 Google Scholar
Tadhunter, C. N., et al. 1993, MNRAS, 263, 999 Google Scholar
Wagner, S. J., & Witzel, A. 1995, ARA&A, 33, 163 Google Scholar
Whiting, M. T., Webster, R. L., & Francis, P. J. 2001, MNRAS, 323, 718 (WWF)Google Scholar
Wills, B. J., et al. 1992, ApJ, 398, 454 CrossRefGoogle Scholar