The Curious Case of White Holes: Unraveling the Mysteries of Spacetime Curvature

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Discussion Overview

The discussion revolves around the theoretical concept of white holes and their influence on the curvature of spacetime. Participants explore various properties, implications, and interpretations of white holes, including their gravitational effects and relationship to black holes.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants inquire about how white holes curve the spacetime manifold and request visual representations of this influence.
  • There is a suggestion that white holes are unlikely to exist, with a reference to Kruskal diagrams illustrating their theoretical properties.
  • Conflicting propositions are noted regarding the mass of white holes, with claims that they can have mass, no mass, or even negative mass.
  • Participants discuss the gravitational effects of white holes, with some asserting that they attract objects while others suggest that objects would fall away from them, indicating a negative gravitational impact.
  • One participant questions whether time would run faster at the center of a white hole based on its gravitational properties.
  • A later reply challenges the reliability of sources regarding the mass of white holes, asserting that they have mass similar to black holes and possess attractive gravity.
  • It is stated that any object approaching a white hole would actually end up inside a corresponding black hole, complicating the understanding of their gravitational effects.

Areas of Agreement / Disagreement

Participants express multiple competing views regarding the properties and implications of white holes, particularly concerning their mass and gravitational effects. The discussion remains unresolved with no consensus reached.

Contextual Notes

There are limitations in the discussion regarding the definitions of mass in the context of white holes, the assumptions about their existence, and the unresolved nature of their gravitational effects.

DaniV
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How does white holes curving the space-time manifold?
(I prefer see picture of white hole influence in addition to the explanation).
 
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DaniV said:
How does white holes curving the space-time manifold?
(I prefer see picture of white hole influence in addition to the explanation).

It's unlikely that white holes exist, but if you google for "Kruskal diagram" the singularity in region IV is a white hole.
 
I found this purporting to show a white hole. http://www.universetoday.com/wp-content/uploads/2010/10/White-Hole.jpg

I have read conflicting propositions on the properties of a white hole. I have read that a white hole: has mass, has no mass and has negative mass.

Additionally, I am not clear about what gravitational effect a white hole would have. I have read that objects would be attracted to a white hole (i.e. it has mass) but that it could never reach the white hole. The image that I presented above seems to represent the idea that a white hole has a negative gravitational impact, (i.e. things would fall away from the white hole.

If this latter interpretation is correct, would it be accurate to say that time would run faster in the center of the white hole?
 
BobDruzisky said:
I have read conflicting propositions on the properties of a white hole. I have read that a white hole: has mass, has no mass and has negative mass.

You have evidently not been reading reliable sources. A white hole has mass just like a black hole does.

BobDruzisky said:
I have read that objects would be attracted to a white hole (i.e. it has mass) but that it could never reach the white hole.

That is correct. The white hole has mass just like a black hole, so it has attractive gravity. But any white hole must also have a black hole associated with it (at least, in the idealized solution you will find when you follow Nugatory's advice to Google "Kruskal diagram"), and any object that thinks it is falling towards the white hole will actually end up inside the black hole.

BobDruzisky said:
The image that I presented above

Is not a good thing to rely on.

BobDruzisky said:
If this latter interpretation is correct

It isn't. The white hole has attractive gravity. See above.
 
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