What heats the hot phase in active nuclei?

Details What heats the hot phase in active nuclei? What heats the hot phase in active nuclei?

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...323..456m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 323, Dec. 15, 1987, p. 456-467.

Astronomy and Astrophysics

Astrophysics

360

Active Galactic Nuclei, Astronomical Spectroscopy, Compton Effect, Emission Spectra, Far Infrared Radiation, Interstellar Gas, Molecular Clouds, Photoionization, Quasars, Seyfert Galaxies, X Ray Spectra

Scientific paper

The authors summarize some constraints on the continuum in active galactic nuclei and discuss implications for the hot intercloud medium. First, there is now good evidence that the peak of the energy distribution may actually occur in the extreme ultraviolet 200 Å ≤ λ ≤1000 Å. Second, it is shown that the Compton temperature is TC ≈ 107K, far too low for broad line region clouds to be stable against drag forces, or for the hot phase to be optically thin to observed X-rays. Finally, the authors discuss some dynamical problems with current models of the intercloud medium.

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