Speaker
Description
Very High Energy Cosmic Rays are believed to be accelerated in astrophysical jets. The formation of such jets requires spinning black holes. Therefore, the modeling of spinning black holes is a fundamental diagnostics for Cosmic Ray acceleration. However, detecting spinning black holes is still a difficult task. The detectability largely depends on high-quality data and very importantly on their sophisticated modeling. In this talk I will present an explanatory example for which the modelling plays a crucial role. Very specifically, the high-energy observations of Mrk 876 hint at a spinning supermassive black hole. Yet, the detectability is hindered by the degeneracy of the parameters, even though further statistical properties favor the spin scenario.