Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-11-11
Astrophys.SpaceSci.309:345-350,2007
Astronomy and Astrophysics
Astrophysics
Accepted for publication in Astrophysics and Space Science, as proceedings of "The Multi-Messenger Approach to High-Energy Gam
Scientific paper
10.1007/s10509-007-9475-y
We study collective wind configurations produced by a number of massive stars, and obtain densities and expansion velocities of the stellar wind gas that is to be target, in this model, of hadronic interactions. We study the expected $\gamma$-ray emission from these regions, considering in an approximate way the effect of cosmic ray modulation. We compute secondary particle production (electrons from knock-on interactions and electrons and positrons from charged pion decay), and solve the loss equation with ionization, synchrotron, bremsstrahlung, inverse Compton, and expansion losses. We provide examples where configurations can produce sources for GLAST satellite, and the MAGIC, HESS, or VERITAS telescopes in non-uniform ways, i.e., with or without the corresponding counterparts. We show that in all cases we studied no EGRET source is expected.
Domingo-Santamaria Eva
Torres Diego F.
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