Two-photon transitions and continuous emission from hydrogenic species

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We discuss the implementation of two-photon emission and absorption in Cloudy, a generalpurpose photoionization and radiative transfer code. We now include induced two-photon absorption between the 1s and 2s levels of hydrogen and hydrogen-like ions and between the 1 1S and 2 1S levels of the He-like isoelectronic sequence. We show sample calculations predicting the full emitted continuum and have implemented a method to allow this continuum to be saved in FITS format and reused in other applications.

Original languageEnglish
Pages (from-to)1176-1179
Number of pages4
JournalPublications of the Astronomical Society of the Pacific
Issue number846
StatePublished - Aug 2006

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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