Black Holes, Mass, Energy and Super Nova?

Question

As far as i understand the Black Hole is defined by its Mass.

When a Black Hole is formed then is should be posible that it doesn't have a singularity yet or that the singularity has relative small Mass (Most of the Mass of the star is out of the singularity but inside the event horizon and afftect it).

Could this be posible:
During the formation time a lot of Mass could be transformed to Energy from the presure created. This decrease in Mass should reduce the event horizon radious, and so Mass and a lot of Energy could escpae to form one of the types of a Super Nova.

Which means that in some cases things can get out from inside a Black Hole.

I know about Hawking Radiation and it is unrelated to my question...

Just to clarify, mass turning into energy means that particale with mass are transformed to massless particales with the same total energy.

Just as happens with atomic bomb or like the sun create the light and other radiation from it's atoms.

Answer 1

You are correct that a black hole is defined by its mass, in that the mass will determine the Schwarzschild radius. But you are a bit confused in your description. A black hole IS a singularity, inside the event horizon. So mass outside of the singularity is mass outside of the black hole. If that mass is transformed to energy (entirely possible given the high energy values created in the gravity field immediately outside the event horizon), it won't reduce the mass of what's inside the event horizon.

The first three links below have information about how energy DOES escape from a black hole, via something called "Hawking Radiation." It's quite different, though, from what you postulate.

The physics of star collapse and supernova formation are well understood. See the last two links below for more info on that topic.

Answer 2

jasmine, a super nova is NOT the same as a black hole. Super nova is the explosion that big stars (>than 3 Suns I think) go through at the end of their lives. After this, if the star is big enough, a black hole will be formed (a very dense mater in a very tight place). If not, a neutron star will be there instead.

Answer 3

Actually, it's happened, on occasion, that things do leave a black hole, Stephen Hawkin lost a bet on it.
First of all, how do you find one? Radio waves, or X rays, in particular.
Now, it's also been theorized, that yes, a crushing gravity well is in effect....say, a ship travelling in, gets hit by the wave...it'll shoot the ship in, but then, after battering it, it'll slingshot the ship back out....but you won't be able to recognize it, as it'll be distorted by the waves within...and probably pulverize anything in it(kids, don't try this at home).
Lastly, there have been cases, where a large body is tried to be absorbed, like a young black hole, and a red giant, needless to say, the black hole is unable to absorb the full mass...thusly, without the sustaining force to keep the process going....the black hole runs into problem....or, it'll simply build up pressure, until the object collaspes....have to keep watching it, as it's going on right now.

Answer 4

You have avery good point there ... since we all know about the relationship between mass and energy we know that at one certain point we can create mass from energy and vice versa shud also be true... But if you go back to the theory of a black hole having infinite gravity due to its density being very very high ... it might not be possible that smth might escape from a black hole since electromagnetic waves are also drawn towards it. But during its formation i think it might be possible . But once its done ... nah ..no way

Answer 5

What I heard about the black hole a long time ago is as described of its pulling energy capability but once inside, the mass or object into it just vanish... and it came from a galaxy that had exploded, expanded, and collapsed into its core.

Answer 6

Event though your query is a good one. But, you apparently forgot to consider the law of conservation of energy which states that, 'ENERGY CAN NEITHER BE CREATED, NOR BE DESTROYED. But it can only be transformed from one form to another. And that the total amount of energy in the universe (which includes every thing, dark energy too) always remains the same.'

So, this law cancels out your theory of 'mass getting transformed into energy'.....

I hope you got my point.
If any other query, you may freely ask me via e-mail

Answer 7

i think nothing can scape from a black hole. i have known that not even light can scape from it. and if a super nova would occur in a black hole i think we wouldn't be able to see anything because the explosion would be absorbed.

Answer 8

at the ending of life

Answer 9

nothing can escape from a black hole

Answer 10

I think what you are thinking about is called a "galactic jet."

;-D It is far more powerful than a super nova.