Exploring Quasars and Black Holes

[lnsanity]

How a quasar beam can get out of a black hole if no light is suppose to be able to get out of the event horizon of a black hole. ? Is it because the beam is created outside of the event horizon ? From what I understand quasar is created because of excess of matter on the black hole correct me if i am wrong... so what I think is when no more matter can get inside the black hole than a quasar is created from the excess matter outside the event horizon ?

That would mean that a black hole as a maximum mass volume and size ? again correct me if I am missing something?

 

[blather]

Well, this is a bit here and there. If you can give a cleaner account, then maybe we can go further, but I'll leave it with a simple explanation:

Yes, you're right in that nothing gets out of a black hole because

1) Nothing goes faster than the speed of light (it would violate causality)
2) Inside a black hole, you see your spatial dimensions switch with your time dimension. So, since time always goes forward you'll always increase your "distance as you'd see it outside a black hole" meaning you always fall towards the center.

Now, for the quasars (sp!). I'm not an expert, so maybe someone else can contribute, but a quick survey of Wikipedia says that:

"...there is now a scientific consensus that a quasar is a compact region in the center of a massive galaxy surrounding its central supermassive black hole. Its size is 10–10,000 times the Schwarzschild radius of the black hole."

Read the "Schwarzschild radius" to be the point of no return of a black hole. But don't take my word for it.*

*-Reading Rainbow riff.

 

[Chronos]

Events occurring outside the event horizon are less affected by gravity of the black hole. That is where jets originate.

 

[cosmik debris]

I think the quasar jets are from matter being accelerated into the black hole. They are not coming out of the hole they are escaping fro the region.

 

[Imax]

If it’s coming from the accretion disk, then why is it so highly collimated?

 

[Sankaku]

If it’s coming from the accretion disk, then why is it so highly collimated?

Coiled magnetic fields caused by the rotation of the disk:
http://en.wikipedia.org/wiki/Polar_jet

 

[twofish-quant]

If it’s coming from the accretion disk, then why is it so highly collimated?

Not totally sure, it has something to do with the magnetic field. yadda. yadda. yadda.

But it probably doesn't have much to do with the black hole since you see similar jets from things that aren't black holes.

 

[Imax]

How a quasar beam can get out of a black hole if no light is suppose to be able to get out of the event horizon of a black hole? Is it because the beam is created outside of the event horizon?

The beam comes from an accretion disk, mass accumulating about stable orbits of a black hole. Molecules in the disk can move about, colliding, and can create magnetic and electric fields.