Could a black hole be contained by a magnetic field?

Question

Assume the black hole's tiny -- so small that inertia isn't a factor. Could you use electromagnets to control the motion of a black hole? And what would happen to the magnetic feild lines as they passed into the event horizon?

Answer 1

In principle, yes. According to the "No hair theorem", there are only 3 observable properties of a black hole: mass, angular momentum, and charge. The latter means that it can be confined in a magnetic "bottle" such as a Penning trap. Since very light black holes don't last long, it would have to be rather large and powerful one. The field lines would be highly distorted near the event horizon, but if the bottle were very large compared to the Swartzschild radius, the hole would still orbit around inside and not escape.

Answer 2

I see this a a balance of forces problem. The magnetic field has to (clasically at least) exert a force against matter (neglecting the force on praticles created by the energy of the two fields) the gravitational force is always going to vastly overwhelm the magnetic force so the "black hole:" will look like a VERY solid mass to the magnetic field. If this "ball of matter" has any net electric charge, the there will be movement within the field. The mass of the "ball" is enormous, so without a huge magnetic field generated by another astronomical body, the movement will be undetectable. The real answer is that you have proposed a non problem. Black holes are by definition massive and their inertia is a factor.

Answer 3

The smallest possible black hollow would be touching directly to the load of an undemanding mountain, in accordance to Hawking, or it might with out postpone lose mass exponentially via Hawking radiation and explode. He claims there would surely be a number of this length left over from the enormous Bang. there is not any authentic stress which could shop it suspended in Earth's gravity, so it might could be saved in area. I study a narrative related to this by utilising Larry Niven. some rouge scientists got here upon considered one of Hawking's primordial black holes so he grew it in length utilising great-dense rely and then fired an ion engine into it for some thing like a 300 and sixty 5 days. After that it may be moved around with a magnetic field, as long because it became saved far off from gravitational fields. It became reported as the Borderland of Sol via fact it happened interior the Oort cloud or Kuiper belt or some thing.

Answer 4

Hmmm.... I will say no because of the following.

1. Black hole is an huge antity, it's formation was by a collapse of a huge star/planet. to move it, it require force to move a star to do it.

2. neglecting 1 for arguement sake, the strength of magnetic field and electric field is inversely proportional to the distance, further away from a electronmagnet, the strength of magnetic field drops substantially. To create an magnetic field that can move items around and at a safe distance from the pull of a black hole, that is un-imaginable. I think you have to be a light year away or more to not be affected or something. That is way to far to archieve the task.

Thanks for reading.

Answer 5

A magnetic field can't travel faster than light, so the field would not be able to escape the hole, either.

The way to control the motion of a black hole is this: you keep launching masses at it, it keeps swallowing them. Their centers of gravity draw toward each other (they are mutually attracted.)

If the BH you use is microscopic, it may move a significant distance in the effort to swallow a large asteroid, for example.

Picture it this way: you're using dog biscuits to lure a pit bull. Because it is much larger than the dog biscuit, it does not have to move far. but it does have to move a little. The analogy breaks down because the dog biscuit is also supposed to move toward the pit bull. But if you get too close, it gets its teeth in you and it won't ever let you go.

Answer 6

A black hole has very few externally measurable properties. However, mass, angular momentum and charge are conserved. In principle, a black hole with a net charge could be contained by a magnetic field, but the charge to mass ratio would be extremely unfavourable. In practical terms--NO.

Answer 7

Since black holes are believed to have some electric charge, it's theoretically possible that they could be affected by an electromagnetic field. The trick would be to somehow prevent the electromagnet from being ripped to shreds and drawn into the black hole.

Answer 8

An interesting theory! I have always thought that Black holes were actually solid mass condensed as neutron stars with active gravity, and neutron stars are very magnetic right? I would guess that you could control it assuming it is small enough not to suck in the magnet.

Answer 9

Well....... IIRC charge *is* conserved inside a black hole, and a black hole can (theoretically) have only a few milligrams of mass (although astronomers have never seen a black hole with less than about the mass of our Sun.

I guess the answer would be yes, under the correct conditions.


Doug

Answer 10

Black consist of its own magnetic force, which is in terms of intense gravity. So yes, the managetic force might control the movement of the black hole IF it is strong enough. If not, then it will just be sucked by the managetic.