Interactions of relativistic particles in stellar winds

DEL PALACIO, S.; ROMERO, GUSTAVO E; BOSCH-RAMON, VALENTÍ

Congreso; Second Argentinian-Brazilian Meeting GRACO 2; 2014

Several binary systems hosting a massive star and a companion thatis either a similar star or a compact object, present non-thermal emission fromradio to -rays. This non-thermal emission is the consequence of the interactionsof relativistic particles surrounded by the stellar wind. The main goal of this workis to characterize the high-energy physics of -ray binaries by implementing ageneral modeling for their most important high-energy processes. To thoroughlyinvestigate the effects of the emitter-star-observer geometry on the resultingradiation, we sistematically applied a non-thermal leptonic model for differentlocations of the emitter, magnetic fields, and acceleration timescales. The resultsof this procedure are presented in the form of emissivity maps, which are usefulfor exploring statistical properties of -ray binaries as well as their expecteddistribution in the galaxy.