Color Variability of AGNs

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dc.creatorVagnetti, F.
dc.creatorTrevese, D.
dc.date2002-12-20
dc.date.accessioned2026-07-07T02:06:58Z
dc.date.available2026-07-07T02:06:58Z
dc.descriptionOptical spectral variability of quasars and BL Lac Objects is compared by means of the spectral variability parameter beta (Trevese & Vagnetti 2002). Both kinds of objects change their spectral slopes alpha, becoming bluer when brighter, but BL Lac Objects have smaller beta values and are clearly separated from quasars in the alpha-beta plane. Models accounting for the origin of the variability are discussed for both classes of objects.
dc.description4 pages, 1 figure, Mem. SAIt LaTeX class mem.cls, to appear in "Workshop on Variability with Wide Field Imagers", Lampedusa, Italy, September 2002
dc.identifierhttps://arxiv.org/abs/astro-ph/0212474
dc.identifierhttp://arxiv.org/abs/astro-ph/0212474
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5544
dc.subjectAstrophysics
dc.titleColor Variability of AGNs
dc.typetext

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