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I am the first in the world

btw, to achieve such a high density, I find conventional physics gives m < 4x10-9Kg. Such a hole will evaporate in about 10-42s.

I can show my working, if anybody's interested, but I thought I'd leave that to see what this thread's crank has to say.
 
nathan said:
btw, to achieve such a high density, I find conventional physics gives m < 4x10-9Kg. Such a hole will evaporate in about 10-42s.

I can show my working, if anybody's interested, but I thought I'd leave that to see what this thread's crank has to say.
Click to expand...

That is anybody's guess,but I will wager that it will be amusing.
 
alfa1 said:
“When the core of the black hole attains the Planck density the core will ‘evaporate’ trough a burst of gamma rays, named quasar”
Adrian Ferent

Because the black hole does not have a perfect symmetry the gamma ray burst is not uniformly distributed.
Not good news for time traveler: inside the black holes you are squeezed and fried.
The question is: when a burst of gamma rays will come from the black hole that is in the center of our galaxy?
Click to expand...

In case anyone sane was wondering, quasars and gamma ray bursts are two very different things. Well, technically gamma ray bursts are more than one thing anyway, but that's not the point. A quasar is basically a galaxy. They mostly date back to when the universe was much younger, to time when men were real men, women were real women, and the centre of a galaxy could be expected to be contain an awful lot of gas, dust and densely packed stars and planets. If such a galaxy also had a supermassive black hole in its centre, those would turn out to be rather unfortunate stars, planets, dust, and so on, that eventually ended up falling into the black hole.

The important point of all this is that it's the accretion disc made up of all that matter falling into the black hole that emits the radiation we see from quasars. This means that the radiation is emitted continuously for hundreds of millions, maybe even billions, of years, until the whole volume is cleared out and there's not much of an accretion disc left. This is why quasars are all a long way away - they settle down in their old age and become regular galaxies. Of course, if more matter arrives somehow then it could all start up again later on. Galaxies can suffer mid-life crises as well.

Gamma ray bursts, on the other hand, are rather different. Firstly, they're very sort lived - usually a few seconds, but anywhere between a fraction of a second and a few minutes. Secondly, they're small. Rather than being essentially a whole galaxy, they're mostly caused either by a single star exploding or by the collision of two star-sized things (mostly thought to be two neutron stars, but could in theory involve one or more black holes, and possibly even regular stars). Thirdly, they happen all over the place. Basically, anywhere there are stars. It takes really quite big stars to make one, so any given galaxy might only have one every few million years, and since they're directional jets we actually see them even less often. The point being that unlike quasars, one could happen next door to us (astronomically speaking) tomorrow (not necessarily astronomically speaking).

As for when the black hole in the centre of our galaxy will produce a gamma ray burst, the answer could be never, all the time, or maybe in a bit, depending on how you read the question. It will be never, in that gamma ray bursts as a phenomenon are nothing to do with galactic centres. It's all the time, in that some matter will always be falling into the black hole at the centre, so there will likely always be some production of gamma rays, just not very much and not in an interesting way. And it's maybe in a bit, because it's theoretically possible that a collision between the Milky Way and Andromeda, which is expected to happen in a few billion years, could turn the resulting merged galaxy into a quasar.

Jack by the hedge said:
It's about making unevidenced declarations.
Click to expand...

Evidence?
 
Yes a quasar is a 'shining' galaxy. I said that huge energy came from a gigantic black hole with that mass.

You said:
All that matter falling into the black hole that emits the radiation we see from quasars.
The question is why when the matter falls in the BH 'lights on' the galaxy?
The BH theory say light can not escape!
 
alfa1 said:
Yes a quasar is a 'shining' galaxy. I said that huge energy came from a gigantic black hole with that mass.

You said:
All that matter falling into the black hole that emits the radiation we see from quasars.
The question is why when the matter falls in the BH 'lights on' the galaxy?
The BH theory say light can not escape!
Click to expand...

Accretion Disk
 
alfa1 said:
Yes a quasar is a 'shining' galaxy. I said that huge energy came from a gigantic black hole with that mass.

You said:
All that matter falling into the black hole that emits the radiation we see from quasars.
The question is why when the matter falls in the BH 'lights on' the galaxy?
The BH theory say light can not escape!
Click to expand...

Go and read up about black holes and then come back.
 
nathan said:
btw, to achieve such a high density, I find conventional physics gives m < 4x10-9Kg. Such a hole will evaporate in about 10-42s.

I can show my working, if anybody's interested, but I thought I'd leave that to see what this thread's crank has to say.
Click to expand...
Did you assume a Euclidean geometry when calculating volume? That's not kosher. But since the lightcones tip over at the horizon, 'reasonable' definitions of 'spatial black hole interior', the internal volume should go roughly as ~(horizon area)*(black hole lifetime), so the answer should be around a Planck mass anyway, give or take an order of magnitude. <waves hands>
 
alfa1 said:
All that matter falling into the black hole that emits the radiation we see from quasars.
The question is why when the matter falls in the BH 'lights on' the galaxy?
The BH theory say light can not escape!
Click to expand...

Light cannot escape from inside the event horizon of a black hole. Obviously matter that is falling into a black hole is not already inside it, otherwise it would already be part of the black hole and not still falling into it. Or, to put it more succinctly:
dasmiller said:
Accretion Disk
Click to expand...
 
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