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Influence of the Gravitational Field on the Shape of Spectral Lines in Spectra of Seyfert Galaxies and Quasars

Published online by Cambridge University Press:  19 July 2016

L. Č. Popović ,
I. Vince  and
A. Kubičela
L. Č. Popović
Affiliation:
Astronomical Observatory, Volgina 7, Belgrade Yugoslavia
I. Vince
Affiliation:
Astronomical Observatory, Volgina 7, Belgrade Yugoslavia
A. Kubičela
Affiliation:
Astronomical Observatory, Volgina 7, Belgrade Yugoslavia

Extract

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On the basis of preliminary examination of the model of Seyfert galaxies and quasars we have concluded that their gravitational field may have an important influence on the shape of spectral lines when the emission cloud is in gravitational field of massive nuclei (mass about 107–108 M⊙ for Seyfert galaxies, see e.g. Padovani et al. 1990), and the emission cloud is large enough (for example about 1014–1015 m for Broad Line Region (BLR) of NGC 7469 (Bonatto & Pastoriza 1990) or about 1021 m for quasar 3C 257 (Forbes et al. 1990)), so that the emitters are in very different gravitational field along the line of sight.

Type
Poster Contributions: Line Studies
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 456
Copyright
Copyright © Kluwer 1994 

References

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Forbes, D. A., Crawford, C. S., Fabian, A. C. & Johnstone, R. M., 1990, Mon. Not. R. Astr. Soc. 244, 680.Google Scholar
Weinberg, S., 1972, Gravitation and Cosmology , John Wiley and Sons, New York – London – Sydney – Toronto.Google Scholar