Shock-Shock Interaction in the Jet of CTA 102
C.M. Fromm (MPIfR), E. Ros (U. Valencia & MPIfR), T. Savolainen, (MPIfR), A.P. Lobanov (MPIfR), M. Perucho (U. Valencia), J.A. Zensus (MPIfR),, M.F. Aller (U. Michigan), H.D. Aller (U. Michigan), M.A. Gurwell (CfA), A., Laehteenmaeki (Metsaehovi)
TL;DR
This paper investigates the 2006 outburst of blazar CTA 102, demonstrating that shock interactions within its jet, supported by VLBI spectral analysis and kinematic data, explain its spectral evolution and variability.
Contribution
It presents evidence for shock-shock interactions in CTA 102's jet, combining spectral analysis and kinematic data to support the over-pressured jet model.
Findings
Spectral evolution consistent with shock-in-jet model
Evidence of interaction between traveling and standing shocks
Jet is over-pressured relative to ambient medium
Abstract
The radio light curve and spectral evolution of the blazar CTA 102 during its 2006 outburst can be rather well explained by the standard shock-in-jet model. The results of a pixel-to-pixel spectral analysis of multi-frequency VLBI images, together with kinematics derived from the MOJAVE survey lead to the picture of an over-pressured jet with respect to the ambient medium. The interaction of a traveling shock wave with a standing one is a possible scenario which could explain the observed spectral behaviour
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Radio Astronomy Observations and Technology · Radio Wave Propagation Studies