On the high energy cut-off of accreting sources: Is general relativity relevant?

  title={On the high energy cut-off of accreting sources: Is general relativity relevant?},
  author={Francesco Tamborra and I. E. Papadakis and Michal Dovvciak and J. Svoboda},
  journal={Monthly Notices of the Royal Astronomical Society},
The hard X-ray emission observed in accreting compact sources is believed to be produced by inverse Compton scattering of soft photons arising from the accretion disc by energetic electrons thermally distributed above the disc, the so-called X-ray corona. Many independent observations suggest that such coronae should be compact and located very close to the black hole. In this case general relativistic (GR) effects should play an important role to the continuum X-ray emission from these sources… 

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