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Optical Variability in AGNs; Disk Instability or Starbursts?

Published online by Cambridge University Press:  25 May 2016

T. Kawaguchi ,
S. Mineshige ,
M. Umemura  and
E. L. Turner
T. Kawaguchi
Affiliation:
Department of Astronomy, Kyoto University Sakyo-ku, Kyoto 606-01, Japan
S. Mineshige
Affiliation:
Department of Astronomy, Kyoto University Sakyo-ku, Kyoto 606-01, Japan
M. Umemura
Affiliation:
Center for Computational Physics, University of Tsukuba Tsukuba, Ibaraki 305, Japan
E. L. Turner
Affiliation:
Princeton University Observatory Peyton Hall, Princeton, NJ 08544

Extract

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Aperiodic optical variability is a common property of Active Galactic Nuclei (AGN), though its physical origin is still open to question. We have compared light curves among the following two models and observation of quasar 0957+561A,B (Kundić et al. 1997) in terms of structure function analysis (§2).

Type
Session 3: Diagnostics of High Gravity Objects with X- and Gamma Rays
Information
Symposium - International Astronomical Union , Volume 188: The Hot Universe , 1998 , pp. 451 - 452
Copyright
Copyright © Kluwer 1998 

References

Aretxaga, I., Cid Fernandes, R., & Terlevich, R. J. 1997, MNRAS, 286, 271 CrossRefGoogle Scholar
Kawaguchi, T., Mineshige, S., Umemura, M., & Turner, E. L. 1997, in preparation Google Scholar
Kundic, T. et al. 1997, ApJ, 482, 75 CrossRefGoogle Scholar
Mineshige, S., Takeuchi, M., & Nishimori, H. 1994, ApJ, 435, L125 CrossRefGoogle Scholar