Can this be considered a Black Hole?

[GoldenScorpions]

I've been postponing asking this for too long, and it gotta happen.

So in episode 2 of Yuki Yuna is a Hero S2, the Heroes go into the World of Flames to save their friend, but they find out she's "trapped inside a black hole". I want to know if that huge black sphere can count as a real black hole, or if it's just limited to similar appearances and gravity shenanigans.

Here are some pics to check the size: https://imgur.com/a/zI4n4

And here's the timestamp where Yuna jumps into the "Black Hole": https://www.youtube.com/watch?v=27oO_99rE-Y&t=792s. The gravity aspect is there but unsure about the rest.

Also, on the same video, from 19:21 to 20:00, after Yuna frees Mimori, the "black hole" collapses on itself and disappears.


For some context. The place the Heroes are in is a universe-sized sea of inextinguishable flames created and controlled by a fusion of gods (Heavenly Gods / HG). That area is completely uninhabitable and covers the whole universe, time is likely altered, and anyone who goes there has their organs stop functioning and heart stop beating (the Heroes are immune to that and can still move). Also, this "Black Hole" was created by the HG as a sort of prison for Mimori where they could feed from her life force. On previous occasions the World of Flames was shown, the "black hole" wasn't there, so it was created specifically for the in-story occasion.

 

[Gojira1234]

Followed. Looking forward to more from this.

 

[GoldenScorpions]

Bump

 

[GoldenScorpions]

Bump!

 

[Antvasima]

I do not think that this seems to fulfill our Black Hole Feats in Fictio requirements. Sorry.

 

[Assaltwaffle]

That's a black hole.

Sorry Ant, that is a way too accurately depicted black hole not to be legit. It has a nigh-identical appearance to what a currently theorized black hole is described to be.

 

[Antvasima]

Well, the problem is that it should break down spacetime, and definitely completely destroy comparatively low-powered characters, if it functioned like a real black hole.

 

[Assaltwaffle]

It already has a defined event horizon. That shows that it is curving space-time.

Does it not destroy low-powered characters? A robot-looking dude gets crushed and spaghettified for a second before disappearing.

 

[Antvasima]

The problem is that a comparatively low-powered character was trapped within the black hole without being completely annihilated.

 

[Assaltwaffle]

Then it is just resistance. A character was crushed by intense gravity, folded over by space-time curvature, it looks like a picture-perfect black hole, it has a defined and accurate event horizon, eats light, and is called a black hole.

Without outright mentioning Hawking Radiation or Schwarzschild radius you can't get much more blatant. If we don't treat this like a black hole then I honestly don't know what would qualify as one unless a scientist comes out and explains every detail of it using current scientific terms.

 

[Antvasima]

Okay. I suppose that we could just mention it as "Resistance to Black Holes" then.

 

[Assaltwaffle]

I'm fine with that. But that is a definitely true-to-form black hole. I mean they borderline copy-pasted the depiction of a black hole from Interstellar.

 

[Antvasima]

Okay.

 

[GoldenScorpions]

Thank you, Assalt.

About the 2nd timestamp at the end of the episode (19:21 to 20:00), is it possible to determine how strong the blast was from the black hole's collapse? Since the other characters were completely fine.

Also, does being resistant to black holes mean being resistant to gravity since the gravitational force of a black hole is massive?

 

[GoldenScorpions]

Bump

 

[Assaltwaffle]

Can't be calced since black holes can't normally be destroyed.

And yes, being immune to the gravitational effects of a black hole entails general resistance to gravity.

 

[Antvasima]

I agree with Assaltwaffle.