Evidence for Shocks as the Origin of Gamma-Ray Flares in Blazars

Details Evidence for Shocks as the Origin of Gamma-Ray Flares in Blazars Evidence for Shocks as the Origin of Gamma-Ray Flares in Blazars

2011-10-28

arxiv.org/abs/1110.6484v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

to appear in 2011 Fermi Symposium proceedings - eConf C110509

Scientific paper

We present centimeter-band total flux density and linear polarization light curves illustrating the signature of shocks during radio band outbursts associated in time with gamma-ray flares detected by the Fermi LAT. The general characteristics of the spectral evolution during these events is well-explained by new radiative transfer simulations incorporating propagating oblique shocks and assuming an initially turbulent magnetic field. This finding supports the idea that oblique shocks in the jet are a viable explanation for activity from the radio to the gamma-ray band in at least some gamma-ray flares.

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