EDP Sciences
Free access
Volume 385, Number 1, April I 2002
Page(s) 62 - 66
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20020231

A&A 385, 62-66 (2002)
DOI: 10.1051/0004-6361:20020231

Research Note

On the broadening of emission lines in active galactic nuclei

L. Foschini

Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF-CNR), Sezione di Bologna (Formerly Institute TeSRE - CNR.) , Via Gobetti 101, 40129 Bologna, Italy

(Received 4 July 2001 / Accepted 4 February 2002 )

Recent works, both theoretical and observational, have suggested that turbulence could play a non-negligible role in the broadening of emission lines in active galactic nuclei. The purpose of this note is to show how shock wave-turbulence interaction, under unsteady regimes, can affect the broadening of emission lines.

Key words: galaxies: active -- shock waves -- turbulence -- line: formation -- line: profiles

© ESO 2002