Can Compton scattering increase the energy of photons?

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SUMMARY

Compton scattering can indeed increase the energy of photons under specific conditions, particularly in the context of black hole accretion disks. As discussed in Hagai Netzer's book, "The Physics and Evolution of Active Galactic Nuclei," the motion of electrons in the accretion disk atmosphere allows for Comptonization, which can result in an increase in photon energy. This phenomenon occurs when high-energy electrons collide with lower-energy photons, transferring energy to them.

PREREQUISITES
  • Understanding of Compton scattering principles
  • Familiarity with black hole accretion disk dynamics
  • Knowledge of photon energy and electron interactions
  • Basic concepts of astrophysics and radiation processes
NEXT STEPS
  • Research the mechanics of Compton scattering in detail
  • Explore the role of electron motion in energy transfer
  • Study the properties of black hole accretion disks
  • Investigate the implications of Comptonization in astrophysical contexts
USEFUL FOR

Astronomers, astrophysicists, and students studying high-energy astrophysics will benefit from this discussion, particularly those interested in the interactions between photons and electrons in extreme environments like black hole accretion disks.

jim421616
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I've read (in Hagai Netzer's book The Physics and Evolution of Active Galactic Nuclei) that "Comptonization in the [black hole's accretion] disk atmosphere can increase the energy of some photons..."

I thought Compton scattering could only decrease a photon's energy. What am I missing?
 
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The electrons are moving.
 
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