Hakucho

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For the Japanese train service, see Hakuchō (train).

Hakucho (also known as CORSA-b before launch) was the Japan's first X-ray astronomy satellite developed by Institute of Space and Aeronautical Science (then a division of University of Tokyo). It was launched by M-3C-4 rocket on February 21, 1979 and reentered to atmosphere on April 16, 1985.

It was a replacement of CORSA satellite which failed to launch for a rocket failure on February 4, 1976.

[edit] Highlights

  • Discovery of soft X-ray transient Cen X-4 and Apl X-1
  • Discovery of many burst sources
  • Long-term monitoring of X-ray pulsar (e.g. Vela X-1)
  • Discovery of 2 Hz variability in the Rapid Burster later named Quasi Period Oscillation.

[edit] External links

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