I would like to know more about effluent from black holes?

Answer 1

A black hole is a place where the escape velocity is greater then the speed of light because the object's gravity is so strong. Since nothing is known that can go faster then the speed of light, anything falling into a black hole can never get out, hence the name "black hole." What happens inside a black hole is not known. The center of a black hole is theorized to be a singularity because it is a point where all the black hole's mass is squeezed to a point of infinite density. We really don't know for sure what happens in a black hole because our current theories are not complete, and the fact that no information can ever leave a black hole. While nothing can escape into a black hole, we can detect them because as things fall into them, they heat up and give off x-rays before they make the plunge.

Two types of black holes are known to exist. One is formed when an extremely massive star dies, and it's core is so massive and small that it collapses under its own gravity to become a black hole. Another type are called "supermassive black holes" which seem to exist in the center of every galaxy (that means our own too). How or why these black holes formed nobody really knows. It probably goes back to how galaxies formed in the first place, although we don't know that either.

Answer 2

If, by "effluent", you mean something that is emitted from a black hole, there are three possible mechanisms. The first, and most visible, is caused by matter in-spiraling into the black hole. Friction and conversion of gravitational potential force will heat the matter until it gives off radiation of various wavelengths.

Related to this is an effect caused by the fact that black holes can have magnetic fields associated with them. These magnetic fields can channel matter into jets that not only give off electromagnetic radiation but also shoot matter away into space. This accelerated matter then slams into surrounding dust and gas, causing the emission of radio waves etc.

The third mechanism was proposed by Hawking. One theory of the universe says that virtual particle/anti-particle pairs are created all the time from nothing. However, these pairs usually recombine in a time period less than Heisenberg's theory allows (Energy x Time < some constant).

If one gets close to the event horizon of black hole, it is possible that one of the pair will cross over into the black hole while the other acquires enough energy to escape to free space. Thus, a black hole would be seen to be emitting particles at a rate inversely dependent to the size of the black hole.

Answer 3

After explosion of one star there creates a black hole,it depends how star has mass.If it has 1point 5 and more than sun it creates black hole,it has strong gravity that can suck light without escaping from it.In every galaxy in the center there is a giant black hole check this out I hope is interesting http://www.damtp.cam.ac.uk/user/gr/public/bh_home.html