Comparison of epochs of ejection of superluminal components with the gamma-ray light curves of EGRET blazars

Astronomy and Astrophysics – Astronomy

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Active And Peculiar Galaxies And Related Systems, Jets And Bursts, Galactic Winds And Fountains, Radiation Mechanisms, Polarization, Astronomical Observations

Scientific paper

We compare the extrapolated epochs of zero separation of apparent superluminal components from the cores in γ-ray bright blazars with the EGRET light curves. In 10 out of 20 superluminal components with sufficient γ-ray data, the epochs of zero separation coincide with times of global or local maxima of the γ-ray light curves within the 1-σ uncertainties of the epochs of zero separation. If we focus only on the γ-ray peaks, nine out of ten with sufficient VLBA data are accompanied by superluminal ejections. The γ-ray flares are therefore associated with energetic events in the jets rather than with minor episodes of enhanced particle acceleration. .

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