Globular cluster x-ray sources

  title={Globular cluster x-ray sources},
  author={David Pooley},
  journal={Proceedings of the National Academy of Sciences},
  pages={7164 - 7167}
  • D. Pooley
  • Published 14 April 2010
  • Physics, Medicine
  • Proceedings of the National Academy of Sciences
Globular clusters and x-ray astronomy have a long and fruitful history. Uhuru and OSO-7 revealed highly luminous (> 1036 ergs-1) x-ray sources in globular clusters, and Einstein and ROSAT revealed a larger population of low-luminosity (< 1033 ergs-1) x-ray sources. It was realized early on that the high-luminosity sources were low-mass x-ray binaries in outburst and that they were orders of magnitude more abundant per unit mass in globular clusters than in the rest of the galaxy. However, the… 
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