Colliding winds of massive stars in binary systems (CWB) have been proposed as potential
sites of relativistic cosmic-ray acceleration and non-thermal very-high-energy (VHE) photons …

Eta Carina is the only colliding-wind binary for which non-thermal emission is detected from
hard X-rays to high-energy gamma rays. Although the physical conditions in the shock …

Context. The most massive binary system Eta Carinae has been recently established as a
gamma-ray source by the AGILE and Fermi-LAT detectors. The high energy spectrum of this …

Abstract η Car is the only colliding-wind binary for which high-energy γ rays are detected.
Although the physical conditions in the shock region change on time-scales of hours to days …

Cosmic-ray acceleration has been a long-standing mystery, and, despite more than a
century of study, we still do not have a complete census of acceleration mechanisms. The …

The binary stellar system η Carinae is one of very few established astrophysical hadron
accelerators. It seems likely that at least some fraction of the particles accelerated by η …

We consider different scenarios for the acceleration of particles (both electrons and hadrons)
and the production of the high energy radiation in the model of stellar wind collisions within …

Just recently, we are starting to explore the γ-ray sky at energies above 100TeV. A detailed
understanding of the emission at these extreme energies is therefore of paramount …

Eta Carinae, the so-far only colliding wind binary detected at high-energy gamma-rays, has
been observed over its first complete orbit since launch of Fermi Gamma-ray Space …

Binaries are particularly suitable systems to study shocks under variable, periodical
conditions–therefore providing conditions for particle acceleration different to those of …