Continued Monitoring of Blazar-Like Optical Variability in Very Radio-Loud Narrow-Line Seyfert Galaxies

Details Continued Monitoring of Blazar-Like Optical Variability in Very Radio-Loud Narrow-Line Seyfert Galaxies Continued Monitoring of Blazar-Like Optical Variability in Very Radio-Loud Narrow-Line Seyfert Galaxies

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924315m&link_type=abstract

American Astronomical Society, AAS Meeting #219, #243.15

Astronomy and Astrophysics

Astronomy

Scientific paper

Observations within recent years appear to support the conclusion that there is a fundamental similarity between very radio-loud narrow-line Seyfert galaxies (RLNLSy1s) and the class of objects known as blazars. Being two classes of active galactic nuclei, it has long been well established that both types of objects are highly energetic, compact emission sources embedded in a host galaxy; ellipticals in the case of blazars, and spirals in that of Seyferts. Presumably, each is fueled through accretion onto a super-massive black hole, resulting in a relativistic jet released perpendicular to the plane of the disk. A blazar merely happens to be oriented so that this jet comes close to lying along the line of sight to the observer. We contend that this orientation is also true of the specific sub-type of Seyfert galaxies defined as RLNLSy1s, making them the spiral galaxy equivalent of a blazar.
The PEGA group at Georgia State University has instituted an observing
program consisting of several RLNLSy1s in the hopes of detecting evidence of microvariability in these objects. As extremely rapid variability on time scales of days or even hours is one of the hallmarks of blazar activity, such detections would serve as a simple yet intriguing - though admittedly not definitive - support for the hypothesis. Our observations show that at least some RLNLSy1s do indeed demonstrate such mircovariability.

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