- #1
Geordie Ross
- 9
- 0
I hear that black holes evaporate, but does it all get converted into Hawkins radiation? And what role do white holes play in evaporation?
Hawking.I hear that black holes evaporate, but does it all get converted into Hawkins radiation?
There are no indications that white holes exist.And what role do white holes play in evaporation?
Yes, smaller black holes radiate at higher temperatures. The Hawking temperature is directly proportional to the surface gravity, [itex]\kappa[/itex], of the object, [itex]T = \kappa/2\pi[/itex]. As the black hole shrinks, its surface gravity goes up (proportional to [itex]1/R^2_S[/itex], where [itex]R_S[/itex] the Schwarzschild radius) and, hence, so does its temperature.Geordie Ross said:Thanks, and is it true that the smaller the black hole, the faster it evaporates? And is there a critical mass that prevents super massive black holes from evaporating?
Black hole evaporation is the process by which a black hole gradually loses its mass and energy over time. This phenomenon is predicted by quantum mechanics and occurs due to the emission of particles from the event horizon of the black hole.
According to the theory of Hawking radiation, virtual particle-antiparticle pairs are constantly being created and destroyed near the event horizon of a black hole. If one particle falls into the black hole, the other can escape as radiation. This causes the black hole to lose mass and energy.
The mass and energy from a black hole is converted into radiation and released into space during evaporation. This radiation is known as Hawking radiation and is composed of various particles, such as photons and gravitons.
Yes, the rate of black hole evaporation increases as the black hole loses mass. This is because the event horizon becomes smaller, and therefore, particles have a higher chance of escaping. However, for a typical stellar-mass black hole, the evaporation process would take an extremely long time, on the order of 10^67 years.
According to current theories, black holes can eventually evaporate completely if they are not continually absorbing new matter. However, this process would take an incredibly long time, and for all practical purposes, black holes can be considered permanent objects in the universe.