Radio and submillimetre observations of wind structure in zeta Puppis

  title={Radio and submillimetre observations of wind structure in zeta Puppis},
  author={Ronny Blomme and Griet C. Van de Steene and Raman K. Prinja and Mark Charles Runacres and J. Simon Clark},
  journal={Astronomy and Astrophysics},
We present radio and submillimetre observations of the O4I(n)f star zeta Pup, and discuss structure in the outer region of its wind (similar to10-100 R-*). The properties of bremsstrahlung, the dominant emission process at these wavelengths, make it sensitive to structure and allow us to study how the amount of structure changes in the wind by comparing the fluxes at different wavelengths. Possible forms of structure at these distances include Corotating Interaction Regions (CIRs), stochastic… 
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