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Gopal-Krishna, Silke Britzen & Paul Wiita

The diversity of AGN variability: Some highlights and challenges

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Mots-clés : galaxies, jets, quasars, objets BL Lacertae, radiation, mécanismes


This article focuses on certain variability and emission characteristics of Active Galactic Nuclei (AGN), especially their radio-loud subset consisting of quasars, BL Lacs and γ-ray detected narrow-line Seyfert 1 galaxies, all of which exhibit relativistically beamed jets of non-thermal radiation. Several striking trends and correlations, including some that have received scant attention, drawn from the available comparatively recent literature are highlighted. These can provide very useful inputs to models of AGN and be probed at a deeper level using the optical telescopes recently set up at Devasthal (Nainital).

Keywords : galaxies, active, jets, quasars, BL Lacertae objects, radiation mechanisms, general

To cite this article

Gopal-Krishna, Silke Britzen & Paul Wiita, «The diversity of AGN variability: Some highlights and challenges», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 88 - Année 2019, Actes de colloques, 2nd Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - October 2018 - Brussels, Belgium, 132 - 142 URL :

About:  Gopal-Krishna

ARIES, Manora Peak, Nainital- 263002, India,

About: Silke Britzen

MPIfR, Auf dem Huegel 69, D-53121, Bonn, Germany

About: Paul Wiita

Dept. of Physics, TCNJ, Ewing, NJ 08628-0718, USA