Black Holes

[lexluthermiester]

this one actually makes some sense

Except that it really doesn't. It would not explain many of the big mysteries of the Universe. It's a fun theory and an excellent thought experiment, but that's all it will ever be.

 

[Bomby569]

Except that it really doesn't. It would not explain many of the big mysteries of the Universe. It's a fun theory and an excellent thought experiment, but that's all it will ever be.

it isn't supposed to a general theory, it's just a thought experiment.

 

[Bones]

Just had a thought - I mean think about it for a sec concerning the magnetic field of a blackhole and how strong it is.
If anyone wants to attempt a close pass to a blackhole to study it, just make sure there is nothing comprised of ferrous materials onboard or the ship itself isn't comprised of it to any extent.

Any and all ferrous materal onboard would probrably get pulled right through/out of the hull and you know what that means, even if you could avoid the event horizon itself.

 

[Bomby569]

Just had a thought - I mean think about it for a sec concerning the magnetic field of a blackhole and how strong it is.
If anyone wants to attempt a close pass to a blackhole to study it, just make sure there is nothing comprised of ferrous materials onboard or the ship itself isn't comprised of it to any extent.

Any and all ferrous materal onboard would probrably get pulled right through/out of the hull and you know what that means, even if you could avoid the event horizon itself.

i'm not in the field but 2 things, wouldn't the gravitational field be always a bigger problem, you would never get a magnetic field force bigger then a gravitational force on a black hole, it should be countless times higher

And wouldn't it depend on the orientation of the magnetic field?

 

[the54thvoid]

Aren't magnetars the universe's Uber magnet?

 

[R-T-B]

Also if the magnetic field is that strong your going to have trouble with several metals that are paramagnetic as well... but yeah gravity would most likely crush you first.

 

[Bones]

Also if the magnetic field is that strong your going to have trouble with several metals that are paramagnetic as well... but yeah gravity would most likely crush you first.

While possible, I'm not so sure it would be because any magnetic field surrounding a blackhole is already overcoming the hole's gravity just to be there as an indicator of it's strength.
What I'm saying is the effect of such a field vs the gravity itself may be stronger.
While it's obvious either effect would lead to the same result, I'm thinking if there were a way to separately measure the effects of each, magnetism of that magnitude may well be a stronger force than gravity alone in this instance.

However as said, since it does end in the same it's not anything to argue about.
I was thinking about how a magnetic field that can emanate from a blackhole could be stronger since it's already opposing and winning this fight to be above and around the hole at all. The field's energy has to come from the hole meaning it's coming through and out of the event horizon because the hole IS the source of it's energy and the hole itself is beneath the event horizon.

There is also the proven fact at least some blackholes can "Burp" out a blast of energy at times, this being observed in recent times.
When they use the term "Bizzare" they aren't kidding about it here.

This is a link I used earlier here but since it's been updated (According to the present article's date) which is why I'm posting it again:
NASA Saw Something Come Out Of A Black Hole For The First Time Ever - The Space Academy

 

[Bomby569]

there's lots of sources for this, but the magnetic field decreases it's force (the further apart you are from it) much faster then gravity

"However, as two objects get far apart, the gravity between them goes down by a factor of four when you double the distance, but the magnetic force goes down by (at least) a factor of sixteen. On the scale of the solar system, with planets far apart, gravity is much more important than magnetism."

Gravity vs. Magnetism

Gravity vs. Magnetism

van.physics.illinois.edu

 

[Bones]

That makes sense but I'm sure you can understand why I was thinking that.
Still fascinating to think about.

 

[Shrek]

Also if the magnetic field is that strong your going to have trouble with several metals that are paramagnetic as well... but yeah gravity would most likely crush you first.

The tidal forces at the Event Horizon of a gargantuan black hole can be quite mild.

Just had a thought - I mean think about it for a sec concerning the magnetic field of a blackhole and how strong it is.
If anyone wants to attempt a close pass to a blackhole to study it, just make sure there is nothing comprised of ferrous materials onboard or the ship itself isn't comprised of it to any extent.

Any and all ferrous materal onboard would probrably get pulled right through/out of the hull and you know what that means, even if you could avoid the event horizon itself.

Even spinning black holes don't have a magnetic field.

 

[Bones]

The tidal forces at the Event Horizon of a gargantuan black hole can be quite mild.




Even spinning black holes don't have a magnetic field.

If I understand you correctly, are you saying all blackholes don't have a magnetic field?

Ultrapowerful magnetic fields revealed in 1st ever image of a black hole | Live Science

 

[Shrek]

Ultrapowerful magnetic fields revealed in 1st ever image of a black hole

The magnetic field may kick a huge jet of matter and energy out of the black hole.

www.livescience.com

"The magnetism results from the hot gas circling the black hole."

Not the black hole itself.

 

[lexluthermiester]

Aren't magnetars the universe's Uber magnet?

Yes. There's a bit of a catch to that. Black Holes can be surrounded by the strongest magnetic fields in the Universe. Explaining that would take a while, but just know that Black Holes can be the cause of magnetic fields far stronger than what a Magnetar can generate.

 

[R-T-B]

The tidal forces at the Event Horizon of a gargantuan black hole can be quite mild

What makes you think that? That's literally the point at which light can no longer escape. Sounds anything but mild.

 

[Shrek]

One is in free fall, so the only force one feels is the difference between head and foot, so called tidal forces.

 

[Bones]

Ultrapowerful magnetic fields revealed in 1st ever image of a black hole

The magnetic field may kick a huge jet of matter and energy out of the black hole.

www.livescience.com

"The magnetism results from the hot gas circling the black hole."

Not the black hole itself.

I understand why you say that but the blackhole is still the actual energy source.

The very reason gas circles the hole, moves or whatever else, it's all driven by the blackhole's gravity. The power to generate a magnetic field of anykind has to come from somewhere, even if the effect is indirect like it causes the gases to swirl, which in turn causes the field to be created.

The blackhole is the true source of all that it takes for it to happen.

 

[lexluthermiester]

I understand why you say that but the blackhole is still the actual energy source.

Not true. Nothing escapes a Black Hole object, even magnetic energy. The information in Shrek's statement is correct. Magnet's fields generated at Black Holes are not generated by the Black Holes themselves but by the matter spiraling around them. If there is no accretion disk, there is no magnetic field.

 

[DeathtoGnomes]

Ultrapowerful magnetic fields revealed in 1st ever image of a black hole

The magnetic field may kick a huge jet of matter and energy out of the black hole.

www.livescience.com

"The magnetism results from the hot gas circling the black hole."

Not the black hole itself.

Not everyone makes this distinction.

If anyone wants to truly study gravity, go stand on Jupiter. Its closest you're gonna get to the gravity of a black hole without having to get as close.

Not true. Nothing escapes a Black Hole object, even magnetic energy. The information in Shrek's statement is correct. Magnet's fields generated at Black Holes are not generated by the Black Holes themselves but by the matter spiraling around them. If there is no accretion disk, there is no magnetic field.

so static electricity caused it from matter rubbing up and down itself there?

electron charge aligned by motion and gravity, like a wire without the wire.

I'm still waiting for the day they can see how a black hole affects dark matter.

 

[the54thvoid]

To some of the above: I think the point @Bones is trying to make is that there would be no accretion disk without the black hole. In other words, although the disk is the direct source of the field, that disk itself is created by the gravitational pull of the singularity.

 

[Bones]

That's what I'm saying.

I'll just say reread the previous from me, I can't really state it any clearer.
The magnetic field, accretion disc, "As Is" or anything else about it gets it power from the blackhole, whether directly or indirectly.

No blackhole, no disc, field, or anything else to even discuss about it.

And here's more weird stuff about them to read, some of the articles are old(er) but still posted for the sake of reading.

This Black Hole's Jets Wobble Like Crazy Because It's Warping Space-Time | Space

A Dozen Black Holes Are Mysteriously Spewing Energy In the Same Direction

Strange but True: Black Holes Sing - Scientific American

Black hole caught spewing jets into space at nearly the speed of light (video) | Space

Monster black hole spotted 'giving birth' to stars | Live Science

Black Holes May Actually Be Fuzzballs: String Theory Explained

 

[lexluthermiester]

Not everyone makes this distinction.

We physicist's do. We have to, it's part of the math.

so static electricity caused it from matter rubbing up and down itself there?

Kinda-sort-of. All the friction generates massive eletrical and magnetic energy's. It's very complex and intense. In addition to magnetic fields, Xray's and even gamma ray burst's have been detected.

To some of the above: I think the point @Bones is trying to make is that there would be no accretion disk without the black hole. In other words, although the disk is the direct source of the field, that disk itself is created by the gravitational pull of the singularity.

That's what I'm saying.

Those are fair points.

 

[DeathtoGnomes]

We physicist's do. We have to it's part of the math.

Expected, you fall outside the parameter of "not everyone".

 

[Bones]

Check this out for some black hole weirdness.

Black hole spews out material years after shredding star -- ScienceDaily

Black hole is 'burping out' a star it devoured years ago | Space

 

[Shrek]

Could it be that the part it threw out took years to return?

 

[lexluthermiester]

Check this out for some black hole weirdness.

Black hole spews out material years after shredding star -- ScienceDaily

Black hole is 'burping out' a star it devoured years ago | Space

Please keep in mind that the event in question is in a galaxy 665million light years from Earth. There are no telescopes built by man that can observe that event with enough detail to work out exactly what is going on. No offense to you at all! It is a fascinating event for sure.

Could it be that the part it threw out took years to return?

Very possible. It's also possible that a non-stellar mass, such as a large planet or even a red/brown dwarf cool enough to be masked by the surrounding galactic radiation is now falling in. It could also be a mass object being sling-shot ejected around, but not into, the event horizon.

We're too far away to know for sure.