The extreme flare in III Zw 2:. Evolution of a radio jet in a Seyfert galaxy

Details The extreme flare in III Zw 2:. Evolution of a radio jet in a Seyfert galaxy The extreme flare in III Zw 2:. Evolution of a radio jet in a Seyfert galaxy

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...435..497b&link_type=abstract

Astronomy and Astrophysics, Volume 435, Issue 2, May IV 2005, pp.497-506

Astronomy and Astrophysics

Astrophysics

23

Galaxies: Active, Galaxies: Individual: Iii Zw 2, Galaxies: Jets, Galaxies: Seyfert

Scientific paper

A very detailed monitoring of a radio flare in the Seyfert I galaxy III Zw 2 with the VLA and the VLBA is presented. The relative astrometry in the VLBA observations was precise to a few μas. The spectral and spatial evolutions of the source are closely linked, and these observations allowed us to study a textbook example of a synchrotron self-absorbed jet in great detail. We observed a phase where the jet gets frustrated with neither expansion nor spectral evolution. Then the jet breaks free and starts to expand with apparent superluminal motion. This expansion is accompanied by a strong spectral evolution. The results are a good confirmation of synchrotron theory and equipartition for jets.

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