Gamma-ray binaries: correlated variability over >10 decades in frequency
Gamma-ray binaries are systems in which a compact object orbits a massive star. Gamma-ray binaries differ from the well-known X-ray binaries in that their (non-stellar) output is emitted essentially above a few MeV. A intringuing possibility is that gamma-ray binaries are very young systems powered by pulsar spindown. The systems show orbital modulations at high energies that constrain quite strongly the emission models. In particular, I will discuss how the correlated X- ray and TeV variability can be understood in terms of a pulsar powered system.
