12-15 July 2011
Saint George Hotel
Africa/Johannesburg timezone
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The unusual Seyfert Markarian 926 - a link to the LINERs?

Presented by Prof. Hartmut WINKLER on 15 Jul 2011 from 12:30 to 12:45
Type: Oral Presentation
Session: APSS
Track: Track D1 - Astrophysics


<p>Markarian 926 (= MCG-2-58-22) is one of the earliest Seyfert galaxies identified. At discovery it was one of the most luminous nearby active galactic nuclei (AGN), with strong, wide broad lines. In the late 1980's it started fading, eventually settling at barely ~10% of its recorded peak luminosity. The luminosity decrease was accompanied by significant spectral changes, with the broad-line component now much weaker and highly asymmetrical. Low ionisation narrow lines, however, are now unusually strong, more typical of the AGN class referred to as LINERs rather than a Seyfert. This peculiar low-luminosity phase spectum has remained relatively constant over the last decade. The paper will discuss the spectral and other characteristics of Markarian 926 and compare these to standard Seyfert models. It will furthermore investigate Markarian 926's relationship to the LINERs, and whether SALT observations of this object could shed light on the interrelationship between Seyferts and LINERs.

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Room: Acro2

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