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The COS-B satellite

The COS-B satellite (Credit: ESA)

Lifetime: August 1975 - April 1982

Operator (primary): European Space Research Organization

Primary Science

The primary science of COS-B was to study in detail the sources of extraterrestrial gamma-rays at energies above 30 MeV.

Science Highlights

  • Compiled catalog of 25 gamma-rya sources (the 2CG Catalog)
  • Studied binary system, Cygnus X-3, which contained a pulsar and gamma-ray emitter
  • Made gamma-ray lightcurves of the Vela and Crab nebulas
  • Made the first gamma-ray map of the Galactic plane
  • First gamma-ray observations of an active galactic nuclues

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