![]() Matter which leaves the white hole can enter the black hole, but never the reverse. ![]() The white hole is in the past and the black hole is in the future, and they are connected the other way. It sounds like you think that they are spatially connected so that matter which enters a black hole here comes out of a white hole there. There is no way that we can get new matter shooting out of a white hole.įinally, you mention white holes as “the other end” of a black hole. Third, if we assume that a white hole would still exist with a small amount of matter shooting out of it, then because the white hole is in the past that matter would have already shot out of it. ![]() But theres another space phenomenon thats just as. In an ideal Schwarzschild spacetime the white hole is a singularity in the past and the black hole is a singularity in the future. Black holes are one of the most devastating objects in space, sucking up everything around them. Second, in the mathematical idealization where they do occur, they are more like a moment in time than a place. This is in contrast to black holes which seem to be a very robust finding and occur even with realistic matter distributions, substantial asymmetry, angular momentum, etc. They show up when there is perfect spherical symmetry, no angular momentum, and no matter or energy. White holes are not what you think they are.įirst, white holes are not part of a realistic spacetime. If we found a theory saying something like that most physicists would expect it to be wrong because it breaks the basic rule of conservation of energy. There does not seem to be a way to create some kind of infinitely growing loop like you are describing. In general the universe seems to keep very strict mathematical balances on things like energy. I don't know of any study on this (although I'm certainly not an expert in this). With that in mind the idea that a while hole could be absorbed by it's corresponding black hole would be very odd. Unlike a black hole, a white hole will allow light and matter to leave, but light and matter will. While there is some serious work done on them, I think it would be fair to describe them as an interesting abstraction rather than something we expect to find. Novikov proposed that a black hole links to a white hole that exists in the past. They're basically an abstract mathematical extension of the mathematics of a black hole. White holes (unlike black holes) are entirely hypothetical and really are not expected to exist. We see great amounts of matter spiralling around black holes and then falling in.Really what im asking is if a blackhole absorbs the white hole connected to it, then absorbs any matter would it just grow infinitly? The reason to suspect white holes exist is that they could solve an open mystery: what goes on at the centre of a black hole. The sky might be teeming with white holes, too. But several research groups around the world, including my group in Marseille, have recently begun to investigate the possibility that quantum mechanics could open a channel for these white holes to form. The 'black' part.) A supermassive black hole, as you suggested, just has more mass It has a lot more mass than a stellar mass black hole. In another renowned textbook, the world-leading relativity theorist Bob Wald wrote that “there is no reason to believe that any region of the universe corresponds to” a white hole – and this is still the dominant opinion today. The mass of the black hole plays a large role in the diameter of the event horizon (the sphere where escape velocity required exceeds the speed of light. The story may now be repeating itself with white holes, which are essentially black holes in reverse. Today we have lots of evidence that the sky is teeming with them. Radio astronomers had already been detecting signals from matter falling into black holes for decades without realising. In his celebrated 1972 tome Gravitation and Cosmology, Nobel prizewinning physicist Steven Weinberg called the existence of black holes “very hypothetical”, writing that “there is no in the gravitational field of any known object of the universe”. NEVER trust the textbooks, even the ones written by great scientists. If we can spot a black hole turning white, it would be our first glimpse of quantum gravity in action
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