If black holes pull in everything, including light, how can they give off bursts of gamm rays?

Answer 1

Actually the indicative hallmark of the presence of Black Holes is X-RAYS not Gamma Rays. X-rays escape by way of the Event Horizon created by the accretion discs of matter created between the Black Hole and the Star it is sucking in. Example CYGNUS X-1 AND HDE 226868 in the Constellation of Cygnus the Swan visible from March until September every year. In 1975 the Satellite UHURU found this the first of many Black Holes to come because of the surge in X-rays. Hence if you want to see a photo of a Black Hole source in this galaxy or any other you must photograph it with an X-ray filter. Gamma Rays and X-rays actually vibrate at a Higher Octave than Light which is why these things seem to escape from Black Holes they are not really escaping they are the product of the Star getting sucked in it creates intense Luminosity and heat the result causes energy outbursts 10s of 1000s times brighter than Our Sun.Light as we know it only exists between 400 and 700 nanometers. A small part of a bigger whole called the Electromagnetic Spectrum.

Answer 2

Your general question is how can something escape a black hole.

In the quantum world, there are two ways to get out of a gravity prison. One is the conventional way....how you and I would do it. But in the case of a black hole, it's grasp is too strong to merely walk away from it once past the event horizon. Another way out is to tunnel out...an option only open to sub atomic particles.

Basically all particles also have a wave form, and all waves vibrate. If you pluck a string on a guitar, the string vibrates, but so does the air around the string.

When a wave-particle is trapped by an electric field or gravitation field, it may be in such a state as to "vibrate" itself out, much like a wave appears in the air next to the vibrating guitar string.

With black holes, a similar process occures with Hawking Radiation. Space is swarming with things called "virtual particles". The particles exist for incredibly short periods of time, pop up out of the nothing of space, and always occure in pairs. One is called the particle, the other is the anti-particle (in this way conservation of energy isn't violated). When this occures close to the event horizon, one particle may fall in, leaving the other isolated from it's neccisary counterpart.

Now there is a particle that appeared from nowhere and doesn't have it's counterpart...the anti-particle, ,to balance things in the universe out, so, it is under this condition, that energy is allowed to tunnel out of the black hole....or more preciesly, tunnel out from just beyond the event horizon.

I think the gamma rays aren't coming from beyond the event horizon though. Rather they are coming from the disk of debris that is orbiting the black hole...

Answer 3

The black holes do not emit radiation. The radiation comes from material being pulled into the black hole. As it accelerates toward the black hole intense friction between particles cause them to light off. At some point this released energy is great enough to actually push the material away from the event horizon of the black hole thereby starving it so to speak. (no more stuff goes in the black hole and the radiation bursts cease)

Answer 4

Observations in longer wavelenghts have linked some gamma ray bursts - the long period variety - to a variety of core-collapse supernovae (hypernovae). The rapid accretion of huge amounts of matter to a rapidly spinning black hole might explain the fantastic energies involved in these events.

The black hole itself wouldn't emit the gamma rays. Rather, infalling matter would convert gravitational potential energy into radiation and kinetic energy. Scientists suspect that some gamma ray bursts may stem from a directional beaming of this energy.

How exactly the 'beaming' mechanism operates is not fully understood. In any case, the radiation would come from *outside* the black hole's event horizon.

Answer 5

They don't. Large gamma bursts have been found in the universe, but it's thought they're the result of a star collapsing into a black hole but only at that moment.

On the other hand, it's not true that nothing escapes from a black hole. One of Steven Hawking's accomplishments was to show that quantum uncertainty means that no process is totally efficient, including the ability of black holes to trap energy. So energy leaks from them. They may also decay over very large periods of time, releasing more and more energy.

Answer 6

Beta and gamma radiation allow astronomers and scientists to observe a black hole because a black hole has what is called an event horizon. This event horizon prevents anything from escaping including light and other forms of radiation.

Now here is where it gets tricky. Beta and gamma radiation have a higher frequency and less mass than light so they can get closer to the black hole than visible light.
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So, in summary, gamma radiation will be still visible closer to the gravitational singularity (the middle) than visible light will. Scientists can see the difference in the two and "paint a picture" of how a black hole acts and looks based on the difference between the visible light and gamma radiation.

Answer 7

Stuff like gas, dust, star material, etc., that gets drawn towards a black hole will be accelerated to near light speed. Internal friction of all that stuff and the high velocity it's all moving at generates great quantities of radiation, mainly x-rays. Once this material passes a certain point in the black hole--called the 'event horizon'--it literally disappears from the known universe.

Answer 8

Some of the matter particles that are drawn towards the event horizon of a black hole approach at an angle that allows them to to be accelerated to almost the speed of light, then flung back out into space, the way a comet is as it approaches our sun. This matter, as it intersects other matter, release high energy photons in the form of cosmic and gamma rays.

Answer 9

In idea, no merchandise previous the shape horizon of a black hollow can ever damage out, such as mild. even if, black holes will be inductively detected from commentary of phenomena close to them, alongside with gravitational lensing, galactic jets, and stars that look in orbit round area the position there is not any seen remember. the most conspicuous outcomes are believed to come back from remember accreting onto a black hollow, it really is envisioned to assemble into an particularly warm and quick-spinning accretion disk. the interior viscosity of the disk motives it to develop into particularly warm, and emit rather a lot of X-ray and ultraviolet radiation. This procedure is amazingly effectual and would convert about 50% of a few thing else mass potential of an merchandise into radiation, as antagonistic to nuclear fusion that can in undemanding words convert some % of the mass to potential. different noted outcomes, are slender jets of debris at relativistic speeds heading alongside the disk's axis.

Answer 10

"The mechanism behind gamma-ray bursts is still not known for certain..." BUT "Gamma-ray energy, she argues, could come from a disk of material swirling around a rotating black hole" rather than from the black hole itself (around the event horizon).

The black hole only asserts gravitational force on object within the event horizon. Some objects end up orbiting the event horizon instead of falling into it and these are thought to cause gamma bursts.

go to this link to learn more:
http://www.innovations-report.com/html/reports/physics_astronomy/report-17477.html