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Recurrent outbursts in the broad line region of NGC 1566

Published online by Cambridge University Press:  19 July 2016

D.M. Alloin
D.M. Alloin*
Affiliation:
Observatoire de Paris-Meudon, Place J. Janssen, 92195 Meudon-Principal Cedex, France

Abstract

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From a set of spectrophotometric data covering 15 years, we observe a recurrent activity in the BLR of NGC 1566. Each period of activity lasts for 1300 days. It consists of successive bursts characterized by a rise-time less than 20 days and an exponential decay on a time scale of around 400 days. The total energy involved in one 1300 day period of activity is 1051 ergs. These variations can be understood in the framework of accretion disc models for AGN, as resulting from a limit cycle which operates in the inner regions of the disc.

Type
III. Spectral Line Studies
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 353 - 355
Copyright
Copyright © Reidel 1986 

References

Alloin, D., Pelat, D., Phillips, M., Whittle, M., 1985a Astrophys. J. 288, 205.Google Scholar
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