What Causes High Energy Radiation Emissions from Black Holes?

Click For Summary
SUMMARY

The discussion clarifies that high energy radiation emissions from black holes originate from the accretion disk outside the event horizon, rather than from within it. As gas approaches a black hole, it accumulates gravitational potential energy, heating up and emitting radiation before crossing the event horizon. This process explains the detection of high energy beams of radiation from black holes, which are visible from Earth.

PREREQUISITES
  • Understanding of black hole physics and event horizons
  • Knowledge of gravitational potential energy concepts
  • Familiarity with accretion disks and their role in radiation emission
  • Basic principles of electromagnetic radiation
NEXT STEPS
  • Research the mechanics of accretion disks around black holes
  • Study the relationship between gravitational potential energy and radiation emission
  • Explore observational techniques for detecting high energy radiation from celestial bodies
  • Learn about the different types of black holes and their radiation signatures
USEFUL FOR

Astronomers, astrophysicists, and students interested in black hole research and high energy astrophysics will benefit from this discussion.

richard lareva
Messages
4
Reaction score
0
My understanding is that once light or anything else crosses the event horizon, it will not re-emerge. However, we detect high energy beams of radiation coming from opposite sides of some of the celestial bodies that I have been told are types of black holes. Obviously I'm missing something here.
 
Physics news on Phys.org
The radiation we see coming from black holes is emitted from outside the event horizon. As gas falls into the black hole, it gains gravitational potential energy and gets hot, causing it to radiate. The radiation is emitted before the gas crosses the event horizon.
 

Similar threads

High School Is there a white hole inside every black hole?
  • · Replies 22 ·
Replies
22
Views
2K
Undergrad I don't see how a black hole's event horizon can be crossed
  • · Replies 73 ·
3
Replies
73
Views
4K
Undergrad You can't actually enter a blackhole?
  • · Replies 40 ·
2
Replies
40
Views
4K
Undergrad Can light be reflected in a black hole?
  • · Replies 22 ·
Replies
22
Views
2K
High School Black hole electromagnetic spectrum
  • · Replies 4 ·
Replies
4
Views
2K
High School Is crossing a black hole's event horizon possible?
  • · Replies 46 ·
2
Replies
46
Views
9K
Undergrad Black hole questions
  • · Replies 29 ·
Replies
29
Views
1K
Undergrad How Does Mass Loss from Black Hole Mergers Affect Orbits?
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad Falling through the event horizon of an evaporating black hole
  • · Replies 51 ·
2
Replies
51
Views
6K
Undergrad Evaporating black hole: First principles consideration
  • · Replies 1 ·
Replies
1
Views
1K