Infall or outflow from a single AGN line profile?

Details Infall or outflow from a single AGN line profile? Infall or outflow from a single AGN line profile?

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.244..357p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 244, May 15, 1990, p. 357-361.

Astronomy and Astrophysics

Astronomy

18

Active Galactic Nuclei, Line Spectra, Gravitational Effects, H Alpha Line, Radiation Distribution, Seyfert Galaxies, Spectral Line Width

Scientific paper

A simple model suggests that the far wings of the profiles of the broad lines from AGNs should have the power law form Delta(lambda exp-2) if they are made by an ensemble of parabolically orbiting clouds. The difference between this and the traditional logarithmic law corresponds to the presence or absence of nonzero angular momentum in the Broad Line Region clouds. This very simple picture suggests a diagnostic from a single line profile distinguishing the presence of infall from pure outflow which should also be present in more realistic models.

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