Markus Boettcher

Chair of Astrophysics and Space Physics

WE PROPOSE A SYSTEMATIC STUDY OF THE GAMMA-RAY POLARIZATION SIGNATURES OF VARIOUS BLAZAR EMISSION MODELS, INCLUDING LEPTONIC SYNCHROTRON SELF-COMPTON AND EXTERNAL COMPTON SCENARIOS, AS WELL AS HADRONIC SCENARIOS. WE FOCUS ON THE CRITICAL ENERGY RANGE 50 -

IN A CURRENT CYCLE 3 FERMI GI PROJECT, WE ARE CARRYING OUT 2D PIC SIMULATIONS OF THE KELVIN-HELMHOLTZ-LIKE INSTABILITIES DEVELOPING ATTHE JET-SPINE INTERFACE OF RELAIVISTIC JETS WITH A HIGHLY RELATIVISTIC INNER JET (SPINE) SURROUNDED BY A MILDLY-RELATIVIS

WE PROPOSE TO DEVELOP A SELF-CONSISTENT, TIME-DEPENDENT LEPTO-HADRONIC BLAZAR MODEL. OUR PROPOSED FRAMEWORK WILL SELF-CONSISTENTLY INCLUDE FIRST- AND SECOND-ORDER FERMI ACCELERATION OF BOTH LEPTONS AND PROTONS THROUGH SHOCK AND STOCHASTIC ACCELERATION, AN

THE FERMI SPECTRA OF SEVERAL LOW- AND INTERMEDIATE-FREQUENCY PEAKED BLAZARS EXHIBIT SHARP SPECTRAL BREAKS AT PHOTON ENERGIES OF A FEW GEV WHICH ARE INCONSISTENT WITH RADIATIVE COOLING OF THE UNDERLYING ELECTRON POPULATION. HERE, WE PROPOSE TO INVESTIGATE