I Seeking Visualization Tools for Hypothetical Black Hole Concept

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The discussion centers on the concept of a hypothetical 'white hole,' which would repel light rather than attract it like a black hole. Participants explore the implications of this idea on light behavior and image visualization. There is a request for software tools to visualize this concept, akin to existing programs like 'Space Engine' that depict black holes. However, it is noted that while white holes are theoretically considered, they are still thought to possess attractive gravity, challenging the original premise. The conversation highlights the need for visualization tools to better understand these complex astrophysical concepts.
andrefff1
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Hello all,

I have a idea I'd like to explore: If a black hole can bend light due to its immense gravitational attraction, could we imagine an 'inverted black hole' or a 'white hole'? In this hypothetical scenario, this 'white hole' would behave similarly to a black hole but with a force of repulsion instead of attraction. This repulsion would cause light to curve away from it, making it impossible for light to reach the white hole.
I'm also curious about whether there are software or codes available that could help me visualize this concept, similar to how software like 'Space Engine' visualizes regular black holes.
Right now, to keep things simple, I wish only to explore how this hypotetical object would affect light and images.
 
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andrefff1 said:
In this hypothetical scenario, this 'white hole' would behave similarly to a black hole but with a force of repulsion instead of attraction.
No, there is no such thing. The theoretical constructs called "white holes" are the time reverses of black holes, but still have attractive gravity.
 
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Abstract The Event Horizon Telescope (EHT) has significantly advanced our ability to study black holes, achieving unprecedented spatial resolution and revealing horizon-scale structures. Notably, these observations feature a distinctive dark shadow—primarily arising from faint jet emissions—surrounded by a bright photon ring. Anticipated upgrades of the EHT promise substantial improvements in dynamic range, enabling deeper exploration of low-background regions, particularly the inner shadow...
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
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