Black hole/Hawking radiation thought experiment

In summary, a new poster expresses gratitude for finding answers to questions about astrophysics in this forum and presents a thought experiment involving a black hole's event horizon decreasing due to Hawking radiation. The experiment involves a hypothetical spaceship with unlimited fuel attempting to cross the event horizon and travel towards the singularity, but unfortunately, there is no escape route as all paths lead to the singularity within an evaporating black hole.
  • #1
marconius
1
0
Hello everyone! New poster here.
I would first of all like to thank you all, since in these threads i have found answers to many of my questions about astrophysics!

I have a little thought experiment for you guys:

Lets say that because of Hawking radiation, the radius of a black hole's event horizon
is decreasing at the rate of X m/s
Lets imagine that such black hole is large enough to allow for a hypothetical spaceship
to cross the event without being spaghettified/destroyed
Lets also assume that such a spaceship has an abundant amount of fuel and can fire its
powerful engines for an unlimited amount of time, getting as close to traveling at C as
physically possible

If the ship were to cross the black hole, would it manage to resist the pull of the black hole
enough to travel towards the singularity at a rate of only (X-Y)m/s and therefore free itself from its pull? (recall that the black hole is receding at X m/S)?
 
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  • #2
Unfortunately, there is no escape route. Once inside an evaporating (spherically symmetric) black hole, all (timelike) paths lead to the singularity.
 

1. What is a black hole?

A black hole is a region in space with a gravitational pull so strong that nothing, not even light, can escape its grasp. It is formed when a massive star collapses in on itself.

2. What is the Hawking radiation thought experiment?

The Hawking radiation thought experiment was proposed by physicist Stephen Hawking in the 1970s. It suggests that black holes emit a type of radiation called "Hawking radiation" and eventually evaporate over time.

3. How does Hawking radiation work?

Hawking radiation is a result of quantum effects near the event horizon of a black hole. Virtual particle-antiparticle pairs are constantly being created and destroyed near the event horizon, with one particle being sucked into the black hole and the other escaping as radiation. This process causes the black hole to lose mass over time.

4. Can Hawking radiation be detected?

While Hawking radiation has not been directly observed, its effects have been indirectly observed through observations of black holes and other phenomena in space. Scientists are still working on ways to detect and study Hawking radiation more directly.

5. What are the implications of Hawking radiation for the study of black holes?

The concept of Hawking radiation has greatly influenced our understanding of black holes and has challenged long-held beliefs about their behavior. It also has implications for the ultimate fate of black holes and the possibility of extracting energy from them. Further research and experimentation on Hawking radiation could lead to a better understanding of the fundamental laws of physics.

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