Aims. Observations of high-energy γ-rays recently revealed a persistent source in spatial
coincidence with the binary system η Carinae. Since modulation of the observed γ-ray flux …

Aims. The binary system η Carinae has completed its first 5.54 y orbit since the beginning of
science operation of the Fermi Large Area Telescope (LAT). We are now able to investigate …

Context. Colliding-wind binaries are massive stellar systems featuring strong, interacting
winds. These binaries may be actual particle accelerators, making them variable γ-ray …

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 …

Context. The η Carinae binary system hosts one of the most massive stars, which features
the highest known mass-loss rate. This dense wind encounters the much faster wind …

Context. η Carinae is the colliding wind binary with the highest mass-loss rate in our Galaxy
and the only one in which hard X-ray emission has been detected. Aims. η Carinae is …

We present the results of extensive observations by the gamma-ray AGILE satellite of the
Galactic region hosting the Carina nebula and the remarkable colliding wind binary Eta …

The binary system η Carinae is a unique laboratory that facilitates the study of particle
acceleration to high energies under a wide range of conditions, including extremely high …

Context. The colliding-wind binary η Carinae exhibits soft X-ray thermal emission that varies
strongly around the periastron passage. It has been found to have non-thermal emission …

Context. Colliding wind binaries are massive systems featuring strong, interacting stellar
winds which may act as particle accelerators. Therefore, such binaries are good candidates …