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Nature 328, 309-313 (23 July 1987) | doi:10.1038/328309a0; Accepted 11 June 1987

Evolving radio structure of the binary star SS433 at a resolution of 15 marc s

R. C. Vermeulen*, R. T. Schilizzi, V. Icke*, I. Fejes†§ & R. E. Spencer

  1. *Sterrewacht Leiden, Postbus 9513, NL-2300 RA, Leiden, The Netherlands
  2. Netherlands Foundation for Radio Astronomy, Postbus 2, NL-7990 AA, Dwingeloo, The Netherlands
  3. Nuffield Radio Astronomy Laboratory, Jodrell Bank, Macclesfield, Cheshire SKI 19 DL, UK
  4. §Permanent address: Satellite Geodetic Observatory (Penc), Hungary.
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A comprehensive series of VLBI (very-long-baseline interferometry) observations of SS433, carried out over an 11-day period on the European VLSI Network at 5 GHz, reveals the motion and evolution of a series of faint 'blobs' ejected from the system. These blobs are observed to brighten at a substantial distance from the binary star.