Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 89: Gammaastronomie III

T 89.6: Talk

Wednesday, March 30, 2011, 18:00–18:15, 30.41: 104

Time lags of flaring AGN — •Björn Eichmann¹, Wolfgang Rhode¹, and Reinhard Schlickeiser² — ¹E Vb, TU Dortmund — ²TP IV, Ruhr-Universität Bochum

The production mechanism of gamma rays by flaring AGN is still one of the main questions in High Energy Astroparticle Physics. A tool to distinguish leptonic from hadronic origin is to analyse time lags that occur within one flare event between photons of different wavelength and other particles like neutrinos.

The present approach starts with the transport equation of the injected leptonic respectively hadronic particles and takes spatial diffusion, as well as continuous energy losses into account. On the one hand, a relativistic electron pick-up is considered, that leads to Synchrotron and Synchrotron-Self Compton emission and on the other hand a relativistic proton pick-up, which results in high energy photons and neutrinos by inelastic proton-proton collisions. The presentation ends up in the temporal development of the emergent photon and neutrino intensities of AGN flares in hadronic and leptonic interaction scenarios and gives useful predictions of flare durations and time lags between photons of different wavelength and high energy neutrinos.