Basic Black Hole Question

[peter_89]

Is it yet known if it is supermassive black holes that are at the very center of a galaxy's nucleus? Could I get some clarification on the subject?
If it were not a black hole, what else could be powering a nucleus? What exactly comprises a nucleus anyhow?
Thanks for any answers -- this is something that I have been pondering lately.

[MKruer]

Welcome to the Forums, peter.

To answer your question. Yes, there is a super massive back hole at the center of our galaxy, or at least we are >99% certain at this point unless some other answer presents it self.

Below is a link that should give you a quick over view of what a super massive back hole is.
http://en.wikipedia.org/wiki/Supermassive_black_hole

[LordFerret]

Some interesting Keck and ESO imagery found through that Wiki link. Fascinating!

[Ozark]

Hi Peter_89

Have you seen this video yet? I found it on Google a long time ago. Very Interesting


http://video.google.com/videosearch?q=S ... 0&filter=0


(It's the Discovery Channel Video )



Ozark

[Growler]

There is also a black hole in every dryer......

What confuses me about black holes is that 1) nothing can escape the gravity well, and yet 2) Black holes produce xrays which stream away from the event horizon.

Now how are the xrays able to do this one?

[t00fri]

There is also a black hole in every dryer......

What confuses me about black holes is that 1) nothing can escape the gravity well, and yet 2) Black holes produce xrays which stream away from the event horizon.

Now how are the xrays able to do this one?

How about reading a book by Stephen Hawking or googling for "Hawking Radiation". Black holes emit a black-body spectrum /termally/...

Bye Fridger

[tony873004]

There is also a black hole in every dryer......

What confuses me about black holes is that 1) nothing can escape the gravity well, and yet 2) Black holes produce xrays which stream away from the event horizon.

Now how are the xrays able to do this one?

Nothing can escape after crossing the event horizon. But prior to crossing the event horizon stuff is moving so quickly that it produces x-rays, and that is what we detect, x-rays just outside the event horizon.

[LordFerret]

But.. but.. but.. I thought I'd seen something / read something somewhere which stated that it was the intense gravity and pressures within which generated the x-rays which emanate from the poles (spin axis?). I'm outta my league on this, but something was ringing a bell.

(sorry)

[MKruer]

There is a new theory that is floating around that seems interesting to me, and it deals with the information paradox of black holes. In a nut shell the theory goes that nothing ever makes it past the event horizon. If nothing passes the even horizon then there is no information paradox. where is all the mass that is forming this beast? Well all the mass is not in the singularity but rather in the shell that forms the event horizon. the reason why no light is emitted is because even photons are broken down when it interacts with the shell, but the particles themselves are never able to pass though it.

This is still 100% speculative at this point, but it does make sense and it does not violate any known physics unlike the idea of the singularly.

[universe_fascination]

Would I live if I would to enter a black hole. What is the theory concerning the "other side" of a black hole. Where can we find white holes? thanks.

[Ozark]

Hi universe_facsination

Some one may correct me if i am wrong, however before you would even enter the Event Horizon your body would be stripped apart in a process called "Spaghettification" literally stretching you in to a strand of atoms..

So no you would not survive.

[MKruer]

You only will become spaghettified with normal size black holes. With super massive black holes there is less of a tilde force working against you before you pass through the event horizon.

Edited for gamer and spelling

[ajtribick]

I wonder what entry into the ergosphere would do though.