How can something go out of a black hole?
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Mass gets converted into energy (x-rays and gamma rays) that is radiated in jets from the poles AWAY and TOWARD the outer event horizon and ergosphere of the black hole.That's how.
http://imagine.gsfc.nasa.gov/docs/scienc…
"...It is true that once matter or energy passes within the so-called Event Horizon of a black hole, that it can never turn around and get back out. However, in the real world, a lot can happen to matter as it approaches the Event Horizon. Commonly, matter falls into what is called an accretion disk which orbits the black hole. Material orbits the black hole within this disk, but if it happens to be gas and dust, this matter experiences friction and the disk heats up as some of the orbital energy of the gas is converted into heat. The closer the disk material is to the black hole, the more rapidly it orbits so that the greater is the heating effect. Just before it reaches the Event Horizon, this disk matter can be heated by friction to thousands of degrees which is enough to produce X-rays. Even higher temperatures approaching a million degrees can occur which can produce gamma rays.
This disk radiation, being outside the black hole, is what we detect as we look at black holes. ..."
http://www.astronomycafe.net/qadir/q385.…
http://imagine.gsfc.nasa.gov/docs/scienc…
"...It is true that once matter or energy passes within the so-called Event Horizon of a black hole, that it can never turn around and get back out. However, in the real world, a lot can happen to matter as it approaches the Event Horizon. Commonly, matter falls into what is called an accretion disk which orbits the black hole. Material orbits the black hole within this disk, but if it happens to be gas and dust, this matter experiences friction and the disk heats up as some of the orbital energy of the gas is converted into heat. The closer the disk material is to the black hole, the more rapidly it orbits so that the greater is the heating effect. Just before it reaches the Event Horizon, this disk matter can be heated by friction to thousands of degrees which is enough to produce X-rays. Even higher temperatures approaching a million degrees can occur which can produce gamma rays.
This disk radiation, being outside the black hole, is what we detect as we look at black holes. ..."
http://www.astronomycafe.net/qadir/q385.…
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The gamma radiation comes from things that are ripping apart as they fall towards the black hole. The gamma radiation escapes before it gets to the event horizon. Black holes also evaporate (over incredibly long periods of time) according to Steven Hawkin's theory. This happens because pairs of particles and anti-particles randomly pop into existence, with one inside the black hole event horizon, and one outside. The one outside escapes and the one inside doesn't. There's another possible mechanism but I forget what it is.
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Not true. The light comes from the disk of gas around the black hole. If the BH was 100 km in diameter (for example), there is often a spinning disk of gas ranging from 300 km to 300,000 km outside the BH. The disk is spinning *VERY* fast -- as much as 10% of light speed or more -- and it is *VERY* dense -- many times denser than solid rock.
The atoms in the disk are constantly bouncing into each other. When that happens at 10% light speed, you get a lot of gamma and X-ray radiation,
The atoms in the disk are constantly bouncing into each other. When that happens at 10% light speed, you get a lot of gamma and X-ray radiation,
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A black holes isn't actually a hole, it is simply a a central point at which all the suns energy and gravity is located, making it very very hot and very very dense. Gamma ray bursts are the energy out put of the particle going into the black hole, so it is not effected by gravity.