Statistical Correlations between Optical and radio regimes in BL Lac (Poster)

Details Statistical Correlations between Optical and radio regimes in BL Lac (Poster) Statistical Correlations between Optical and radio regimes in BL Lac (Poster)

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aspc..299..255h&link_type=abstract

High Energy Blazar Astronomy, ASP Conference Proceedings, Vol. 299, held 17-21 June 2002 at Tuorla Observatory, Piikkio, Finland

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present a new method for correlating optical and radio variations in AGN. We have modelled the radio light curves for BL Lac, obtained with the Metsähovi radio telescope, by fitting exponential flares to the observed outbursts. The radio light curves are then replaced by a model light curve that consists of a set of these fitted exponential flares and a constant quiescent flux component. At each epoch of time, three values, representing the radio stage of the source at that time, can be determined: the phase and flux of the flare and the flux of the model light curve. These values are calculated for the concurrent radio model flare at each epoch of optical observation. This method gives a statistical comparison between optical and radio flux levels.

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