Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..360..251v&link_type=abstract
AGN Variability from X-Rays to Radio Waves ASP Conference Series, Vol. 360, Proceedings of the conference held 14-16 June, 2004
Astronomy and Astrophysics
Astrophysics
Scientific paper
Spectra of the Seyfert 1 galaxy NGC 4151 were obtained from 1976 to 2003 and measured by the authors. An analysis of Hα profile shows the significant increase of F(Hα)^{blue} / F(Hα)^{red} ratio over the period 1976 - 1986. It is assumed that there is a direct correlation between F(Hα)^{blue} / F(Hα)^{red} variations and the total activity of NGC 4151.
Denissyuk E. D.
Gaisina Valentina N.
Valiullin Rashit R.
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