Dense thin clouds in the central regions of active galactic nuclei

Details Dense thin clouds in the central regions of active galactic nuclei Dense thin clouds in the central regions of active galactic nuclei

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.255..419c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 255, April 1, 1992, p. 419-422. Research supported by A

Astronomy and Astrophysics

Astronomy

76

Active Galactic Nuclei, Cold Gas, Dense Plasmas, X Ray Astronomy, Emission Spectra, Magnetic Flux

Scientific paper

Small amounts of very dense matter in the central engine of an active galaxy have an important effect on the emitted spectrum at ultraviolet and longer wavelengths. If only 0.1 percent of the total matter expected there is in the form of small dense clouds, then much of the infrared and optical spectrum is absorbed and reradiated in the ultraviolet. Such clouds thereby suppress much of the primary synchrotron radiation emitted by relativistic electrons in the strong magnetic field which is responsible for accelerating them. The magnetic field supports and confines the dense clouds in a manner analogous to prominences above the solar photosphere. The properties of the clouds are discussed, and it is shown that they are a likely constituent of the central engine.

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