PLEASE FRONTIER - I've been asking for YEARSSSSSS. Update blackholes!

[Darth Ender]

No that's the point, a radiation belt needs to be contained by "something". In the case of planets and stars it's the magnetic field they generate that does the containing, ions don't orbit, they travel in a straight line unless constrained by some force, and there is no such constraining force around a black hole because the only effect a black hole has on the universe is gravity. There is nothing around a black hole to hold the radiation in place to create a belt.

light travels in a straight line. ions have mass, which will be impacted by gravity, not just magnetic fields. Their speed can vary and they can be significantly slower than light (and thus at an orbit outside of the event horizon) while still being dangerous.

You're thinking of just light, em radiation, which at best could only orbit at the event horizon ...and that's not the only thing that comprises radiation in reference to radiation belts.

granted, gravity alone probably wouldn't allow such a belt to extend very far away from the event horizon.

A caveat though to this limitation is that the belt is not stable. But rather the result of a constant but tiny influx of matter from nearby stars (so this would be something that affects multi-star black hole systems) ... So you are experiencing an invisible sparse accretion disc with localized hazard as you near filaments of this orbiting matter falling towards the black hole.

 

[varonica]

light travels in a straight line. ions have mass, which will be impacted by gravity, not just magnetic fields. Their speed can vary and they can be significantly slower than light (and thus at an orbit outside of the event horizon) while still being dangerous.

A magnetic field can't constrain a radiation belt, gravity doesn't work like that, any ions caught by a BH's gravity won't maintain a stable orbit, we know this, it's not a theory, it's a fact, that same applies to any sort of material ring like structure orbiting a body. Saturn's rings, for instance, are unstable and will eventually break up, they will be gone in around 100m years. Since there's no source of ions to maintain and resupply any sort of ring structure around a BH, and ions move a lot faster than icy rock, any radiation in space around a black hole will be long gone, billions of years gone. Gravity does not constrain objects in a ring, a magnetic field does because the ions are charged particles, and magnetic fields repel particles charged in the right way so can control thier movement and contain them in a ring like structure. Gravity doesn't care about charge, only attraction. I mean this is basic physics, gravity doesn't work like that!

Now go online and look it up, look up radiation belts around black holes.

 

[Darth Ender]

A magnetic field can't constrain a radiation belt, gravity doesn't work like that, any ions caught by a BH's gravity won't maintain a stable orbit, we know this, it's not a theory, it's a fact, that same applies to any sort of material ring like structure orbiting a body. Saturn's rings, for instance, are unstable and will eventually break up, they will be gone in around 100m years. Since there's no source of ions to maintain and resupply any sort of ring structure around a BH, and ions move a lot faster than icy rock, any radiation in space around a black hole will be long gone, billions of years gone. Gravity does not constrain objects in a ring, a magnetic field does because the ions are charged particles, and magnetic fields repel particles charged in the right way so can control thier movement and contain them in a ring like structure. Gravity doesn't care about charge, only attraction. I mean this is basic physics, gravity doesn't work like that!

Now go online and look it up, look up radiation belts around black holes.

Modelling the black hole silhouette in Sagittarius A* with ion tori | Astronomy & Astrophysics (A&A)

Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics

www.aanda.org

stable ionic orbiting belts.

And granted, they're working with a significant supply of ionic material allowing it to generate a significant magnetic field from it's own orbit - we dont need to go that far to simulate semi-hazardous black holes rather than insta-kill ones.

Obviously the ions are resupplied by nearby stars and planets etc that are near the black hole We know it wouldn't produce it's own. And this can be occuring frequently thru time, not just at the birth of a black hole. so we dont have to worry about how unstable the orbits are.

All that's needed to maintain not having them be visible is just a smaller quantity... though i'd be fine with modelling it in the visible spectrum, i just figure any hope of hazards around a black hole would have to involve as little effort from fdev as possible in terms of graphics.

 

[Brrokk]

Whether these radiation belts exist or not, they're no threat to ships which can already skim the surface of blue-white stars. No extra danger from black holes is needed in ED for realism.

There could be a case for danger for gameplay reasons, but I prefer realism in this case.

 

[varonica]

Modelling the black hole silhouette in Sagittarius A* with ion tori | Astronomy & Astrophysics (A&A)

Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics

www.aanda.org

stable ionic orbiting belts.

And granted, they're working with a significant supply of ionic material allowing it to generate a significant magnetic field from it's own orbit - we dont need to go that far to simulate semi-hazardous black holes rather than insta-kill ones.

Obviously the ions are resupplied by nearby stars and planets etc that are near the black hole We know it wouldn't produce it's own. And this can be occuring frequently thru time, not just at the birth of a black hole. so we dont have to worry about how unstable the orbits are.

All that's needed to maintain not having them be visible is just a smaller quantity... though i'd be fine with modelling it in the visible spectrum, i just figure any hope of hazards around a black hole would have to involve as little effort from fdev as possible in terms of graphics.

You understand this is not a regualr black hole but one with a huge accretion disk of matter orbiting it, you can't base your claim the BH's would have radiation belts based on Sag A*, that's almost ridiculous, as I said you need a strong magnetic field and not just any field, one of these;

a toroidal magnetic field,

And one of these;

the accretion structure

This type of structure is probably peculiar to super massive galactic center black holes and can't be applied to a regular black hole, as I have already suggested Sag A* should be treated as a unique structure as far as BH's are concerned, 99.99% of BH's are going to be invisible to any method of detection apart from gravity, trying to shove unique effects found around a galaxy center super massive black hole onto all black holes is ridiculous.

This article is applied only to Sag A* thus you have failed to present any actual evidence that regular BH's have radiation belts. I don't even know why I am bothering to argue the point, you are wrong, regular black holes don't have radiation belts and even Sag A* if it didn't have a massive accretion disk, wouldn't have radiation belts because they are a function of the accretion disk, not the black hole itself as explained in the very article you linked.