Non-thermal X-rays from colliding wind shock acceleration in the massive binary Eta Carinae

  title={Non-thermal X-rays from colliding wind shock acceleration in the massive binary Eta Carinae},
  author={Kenji Hamaguchi and Michael F. Corcoran and Julian M. Pittard and Neetika Sharma and Hiromitsu Takahashi and Christopher Michael Post Russell and Brian W. Grefenstette and Daniel R. Wik and Theodore R. Gull and Noel D. Richardson and Thomas I. Madura and Anthony F. J. Moffat},
  journal={Nature Astronomy},
Cosmic-ray acceleration has been a long-standing mystery1,2 and, despite more than a century of study, we still do not have a complete census of acceleration mechanisms. The collision of strong stellar winds in massive binary systems creates powerful shocks that have been expected to produce high-energy cosmic rays through Fermi acceleration at the shock interface. The accelerated particles should collide with stellar photons or ambient material, producing non-thermal emission observable in X… 

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