Understanding Black Hole Radiation: The Mystery of Light Escaping Explained

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SUMMARY

The discussion clarifies that light cannot escape from within a black hole's event horizon (EH), reinforcing the established understanding of black hole physics. It highlights that phenomena such as gamma and radio wave radiation originate outside the EH, specifically from the accretion disks surrounding black holes. Additionally, Hawking Radiation is explained as a process involving negative energy entering the EH while positive energy escapes, further emphasizing that no information or matter can emerge from inside the EH.

PREREQUISITES
  • Understanding of black hole physics and event horizons
  • Familiarity with Hawking Radiation concepts
  • Knowledge of accretion disks and their radiation emissions
  • Basic principles of gamma and radio wave radiation
NEXT STEPS
  • Research the mechanisms of Hawking Radiation in detail
  • Explore the properties and behavior of accretion disks around black holes
  • Study the implications of light and radiation escaping from black holes
  • Investigate the latest findings in astrophysics regarding black hole emissions
USEFUL FOR

Astronomers, astrophysicists, and students of theoretical physics will benefit from this discussion, particularly those interested in black hole dynamics and radiation phenomena.

Petyab
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Why is it generally acccepted that light can't escape from a black hole when gamma and radio wave radiation has been shown to be coming from them? A way I can think around this is that the expulsion happens before the event horizon and is some sort of rejection phenomenon that fuels a chain reaction. Sorry if that's crossing more into theory. Anybody got answers?
 
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Yes, you are correct that the expulsion happens OUTSIDE the EH. NOTHING escapes from inside the EH.

Even Hawking Radiation, which is sometimes misunderstood as being something that radiates from inside the EH, does NOT involve anything coming OUT of the EH, but rather a negative energy dropping into the EH while an equivalent positive energy moves further away from the EH.
 
What Phinds said, plus you have to remember that accretion disks get very very hot, ionized, and emit lots of radiation when the matter is in the process of falling into the BH, but before it passes the event horizon.
 

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