More than a dozen binary systems are now established as sources of variable, high-energy
(HE, 0.1–100 GeV) gamma rays. Five are also established sources of very-high-energy …

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 …

The highly eccentric binary system Eta Carinae (η Car) shows numerous time-variable
emission and absorption features. These observational signatures are the result of …

Spectral observations of the massive colliding wind binary Eta Carinae show phase-
dependent variations, in intensity and velocity, of numerous helium emission and absorption …

We present the first 3D prints of output from a supercomputer simulation of a complex
astrophysical system, the colliding stellar winds in the massive (≳ 120 M⊙), highly eccentric …

We report on high-resolution spectroscopy of the 2009.0 spectroscopic event of η Carinae
collected via SMARTS observations using the CTIO 1.5 m telescope and echelle …

We show that recent observations of He I and N II lines of $\eta $ Carinae may provide
support for an orbital orientation where the secondary star is closest to us at periastron …

Since Augusto Damineli's demonstration in 1996 that Eta Carinae is a binary with a 5.52
year period, many innovative observations and increasingly advanced three-dimensional …