The Colliding Winds of WR 25 in High-resolution X-Rays

  title={The Colliding Winds of WR 25 in High-resolution X-Rays},
  author={Pragati Pradhan and David P. Huenemoerder and Richard Ignace and Andrew M. T. Pollock and Joy S. Nichols},
  journal={The Astrophysical Journal},
WR 25 is a colliding-wind binary star system comprising a very massive O2.5If*/WN6 primary and an O-star secondary in an eccentric orbit with a 208 day period. These hot stars have strong, highly supersonic winds that interact to form a bright X-ray source from wind-collision shocks whose conditions change with stellar separation. Different views through the winds of Wolf–Rayet and O stars are afforded with orbital phase as the stars move about their orbits, allowing for exploration of wind… 
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