What Happens if a Black Hole Dies or Disappears?

In summary, when a black hole dies or disappears, it no longer exists and any nearby objects affected by its gravity will no longer be affected. According to Hawking, black hole evaporation is a lengthy process and for most of its life, a black hole is more likely to gain mass than lose it through Hawking radiation. However, in its final moments, a low-mass black hole may experience a small explosion releasing a large amount of energy. This process is repeated every day throughout its existence.
  • #1
Emmanuel_Euler
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what does happen if the black hole died Or disappeared??
 
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  • #2
Good question - have you had a go looking up the evolution of black holes or how they may "evaporate" to find out?
 
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  • #3
Simon Bridge said:
Good question - have you had a go looking up the evolution of black holes or how they may "evaporate" to find out?
Ok.
 
  • #4
Well done. We can help you with what you find out ... otherwise the answer is basically a couple of hours of physics lectures.
 
  • #5
Thanks
 
  • #7
Emmanuel_Euler said:
what does happen if the black hole died Or disappeared??
Then it no longer exists and any nearby objects which had been affected by it's gravity will no longer be affected by it.
According to Hawking though, black hole evaporation is an extraordinarily lengthy process, and for most of it's life a black hole is more likely to be gaining mass one way or another than losing it through Hawking radiation.
 
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  • #8
Here is a nice calculator for black hole parameters. If you put in a mass even the size of the earth, the lifetime is, well, long... :woot:
I find it interesting how temperature and luminosity are inversely proportional to mass.

http://xaonon.dyndns.org/hawking/
 
  • #9
Dr.ahmad adnan said:
Hi friend i saw the answer for your question ,.... visit this website...press [like] if you like the website http://translate.google.com/transla...th_of_a_black_hole_look_like.html&prev=search
That's a Quora Q&A titled "What would the death of a black hole look like?"; the English version is here:
http://www.quora.com/What-would-the-death-of-a-Black-Hole-look-like [Broken]
(Nice reference thank you.)

... curiously, all the answers concentrate on the question in the title without checking the body-text.
However, Dr Frank Heile gives a decent description of the last few seconds of a low-mass black hole, basically it looks like an explosion.

Quoting Steve Hawking: "Near the end of [a black hole's] life the rate of emission would be very high and about http://qlx.is.quoracdn.net/main-afde161292e837eb.png [Broken] erg would be released in the last 0.1 s. This is a fairly small explosion by astronomical standards but it is equivalent to about 1 million 1 Mton hydrogen bombs."


But this has to be put in the context that the black hole is "exploding" every day for it's entire life ... it's basically one long loong explosion.
 
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1. What is the death of a black hole?

The death of a black hole refers to the process by which a black hole loses its energy and ultimately ceases to exist. This is a theoretical concept as black holes have never been observed to die, but it is predicted to occur through a process called Hawking radiation.

2. How long does it take for a black hole to die?

The time it takes for a black hole to die is incredibly long, with small black holes taking around 10^67 years and larger black holes taking even longer. This is due to the slow rate of Hawking radiation, which is the main mechanism for a black hole's death.

3. Will the death of a black hole have any impact on our universe?

It is unlikely that the death of a black hole will have a significant impact on our universe. As black holes are constantly losing mass through Hawking radiation, their death is a gradual process that does not release a significant amount of energy. However, if a black hole were to die suddenly, it could potentially release a burst of energy that could affect its surroundings.

4. Can a black hole come back to life after dying?

No, once a black hole has died, it cannot come back to life. This is because the process of Hawking radiation is irreversible and once a black hole has lost all of its mass, it can no longer exert a gravitational force strong enough to trap light.

5. How does the death of a black hole impact its surroundings?

The death of a black hole can have various impacts on its surroundings depending on its size and location. For example, the sudden death of a supermassive black hole at the center of a galaxy could release a large amount of energy that could potentially disrupt the surrounding stars and gas. However, the slow death of a small black hole would have minimal impact on its surroundings.

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