White hole Definition and 27 Threads

*********Disclaimer******** Hi, I want to ask this community about some black hole shinanigans. I've spent some time searching for this topic here because I don't want to be the guy who spams a forum with a question already answered a hundred times over. Since none of the threads I found...

Trying to follow Townsend's notes; section 2.3 is discussing ways of dealing with the co-ordinate singularity at ##r=2M##, i.e. either by transforming to ingoing EF which cover I & II, outgoing EF which cover I & III, or KS which cover the entire manifold. I got a bit preoccupied with the...

We know that black holes exist in the universe, but white holes don't, as far as we know, Although white holes are not an impossibility in GR. Is it reasonable to ask if the big bang singularity is in fact a white hole, and is the only white hole in the Universe? Is the place where everything...

White Holes may not exist, but if we discover that they are real and we find one, then: What a white hole will look like? How it will behave? What will be its characteristics (such as gravity, mass, size ..etc) in relation with it's parent black hole? What will be it's effect on nearby stars...

does somebody with a negative mass create a white hole instead of a black hole because of its anti gravity property.

Was the concept of a White Hole ever intended to as a POSSIBLE explanation for the Big Bang, inflation and dark energy expansion of the Universe? Or is it considered crack pottery by the cosmology community? I presume the observable Universe would need to be as small as say a single atom in...

I have heard (read) much debate over the fundamental problems with white holes, mainly that they violate Thermodynamics by increasing entropy. However, I have also read that a black hole bends space-time enough to "connect" somewhere else as an Einstein-Rosen Bridge. So if the exact same event...

Questions about black holes: Various articles mention that it takes infinite amount of time to observe something pass through the event horizon. Does this imply that the redshift observed from afar would carry on forever, that the infalling object would just become dimmer and dimmer, but never...

I know white holes probably don't exist, but I'm having trouble understanding how someone outside the white hole would perceive them. My understanding is that they are time-reversed black holes. I've read that nothing can fall into a white hole, that it is repulsive, and that it continually...

Rovelli & Vidotto's Planck Stars describes a possible quantum black hole - white hole transition through a quantum bounce somewhat analogous to the LQC bounce. In another thread, @marcus pointed out to me that this was not necessarilly considered the most likely scenario for a QG black hole. Is...

I recently read a few articles that contradict Einstein's Singularity theorem. The idea being that black holes are wormholes to other universes; with a white hole on the other side of the black hole (Poplawski's theory). What if instead of being a portal to another universe, the Event Horizon of...

Recent data in qm suggest black holes could decompress into a white hole on either our universe or another as such is there any evidence of white holes in our universeSent from my iPhone using Physics Forums Jim P

i had this science project in school on black holes and i came an article stating we live in a black hole theory link -----> http://www.technologyreview.com/view/419827/why-our-universe-must-have-been-born-inside-a-black-hole/ so i was thinking that if our universe is made up inside a black...

Would it be possible for the universe to exist as a white hole within a black hole? I know about the whole black hole universe theory, though I never really looked into it.

white hole in universe! isn't the center of universe a white hole?( i think)As the center of universe is throwing matter radially(if it is a white hole) outwards at high speed,we are moving away from the centre.This is nothing but the term "expanding universe". does this make sense? thanks.

I came by this in Arxiv, i don't understand it all so i thought i would just flag it. arXiv:1106.3666 (cross-list from gr-qc) [pdf, ps, other] More on McVittie's Legacy: A Schwarzschild - de Sitter black and white hole embedded in an asymptotically $\Lambda$CDM cosmology Kayll...

Now this is my first post here but I've been a reader for some time. Now I have a basic understanding of physics and GR and love to read about cosmology and debate it with different people but I've come up with a few questions that I've been having a hard time to find the answer or understand...

what is a white hole and how does it differ from a black hole?

Hello, I'm currently developing a hypothesis on how our universe could be in fact the end of one black hole; a white hole. I've been having difficulties looking for books or research papers to see if this is in fact just a rip from a larger hypothesis or theory. My teacher had told me to visit...

I have been reading all of the previous threads on this topic, but they are all locked or in some strange stasis state, so I made a new one to get the final answer: Does a white hole have a possibility of existence in our universe, through any means, be it wormhole or alternate universe(s) or...

Is the big bang a white hole? Ya know, the inverse of a black hole... Any reasons why it can't be?

i am just concerning that if there is black holes, is there white holes as well?

http://arxiv.org/abs/astro-ph/0508367 Authors: John G. Hartnett Comments: 7 pages, 6 figures The distance modulus and supernova redshift data, determined by the high-z type Ia supernovae teams, is found to describe a model of the universe that places the Galaxy at the center in a...

This probably could never happen but hypathetically speaking what would happen if a White Hole Collided with a Black Hole? Sincerely Tim

it seems to me that there are many paradigms for the idea of what the first inception of creation was. I have heard of the speed of light being as many as e60 times faster at the big bang, and this is obviously, what we theorize to be the absolute source of all the universe. Well, if a black...

white hole black hole theory: so a black hole sucks in matter and energy and crushes it to an infinitly small dense point. ok but then what happens? and what are white holes? do they exist? what do they do? can anyone explain to me about black and white holes and what if any link is...

i want reply to "Why Do Electrons Move?" (sorry, but the thread is closed..) i think the sun is the white hole. i think all electron comes from the sun. and electron goes into the sub-nucleus. i think sun is not burn out. it will be permanently. from this point of view, i want ask...