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Active galactic nuclei

Unstable by design

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Figure 1: Relationship between local surface density and accretion rate in active galactic nuclei.
Figure 2: The time history (light curve) of the output of a quasar accretion disk, with the ionization instability included, shows large luminosity outbursts (from ref. 11).

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Authors and Affiliations

  1. the Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, 02138, Massachusetts, USA

    Aneta Siemiginowska & Martin Elvis

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  1. Aneta Siemiginowska
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  2. Martin Elvis
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Siemiginowska, A., Elvis, M. Unstable by design. Nature 397, 476–479 (1999). https://doi.org/10.1038/17223

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