The Innermost Regions of Relativistic Jets and Their Magnetic Fields. Granada (Spain). June 10th-14th, 2013.

Richter, Stephan

Studies of Blazar emission using a spatially resolved SSC model.


Author list: Stephan Richter, Felix Spanier


In this talk we will present results obtained with a time dependent, spatially resolved SSC model. In our model, particle acceleration is included via the shock-in-jet approach, where the shock is represented as an inhomogeneity within the emission region. In this way the natural connection to the underlying microphysics is possible. The spectral energy densities (SEDs) are then computed using the full Klein-Nishina inverse Compton cross section. Although steady state SEDs of blazars are well described by this model (as it is usually the case for SSC models), the time variability, e.g. the flare of Markarian 501 on MJD 54952, often can't be explained. This holds, although the light crossing time limit no longer applies, due to the spatial resolution. In fact, the variability timescale usually is determined by the acceleration or cooling mechanism. Furthermore a self consistent connection of various spatial scales is implemented. Hence it is possible to constrain the morphology of the emission region to obtain a consistent picture of high energy emission, radio emission and VLBI radio morphology.