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Molecular megamasers after ten years

  • Willem A. Baan
4. Extragalactic Masers
Part of the Lecture Notes in Physics book series (LNP, volume 412)

Abstract

Megamaser activity for the molecules OH, CH, H2CO, and H2O is reviewed in terms of a consistent picture of exponential amplification of radio continuum by foreground molecular gas. The different characteristics of the various types of megamasers can all be related to the density and pumping conditions of the molecular gas. These conditions strongly depend on the evolutionary stage of the nuclear activity.

Keywords

Optical Depth Nuclear Region Nuclear Activity Radio Continuum Exponential Amplification 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Willem A. Baan
    • 1
  1. 1.Arecibo ObservatoryArecibo

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