How do scientists locate the black hole?

Answer 1

With Radio Telescopes.

Normal Optical Telescopes do nothing because Black Holes are invisible (do not emit sunlight - visable light).

Answer 2

The Scientists who recently discovered a large hole in the Universe stated that it did not contain any black hole( an extinct star).An extinct star means that it no longer produces nuclear fusion to generate radiation of light.Therfore is invisible.
However by using Newton law of Gravitation ,the effect of the invisible black hole on other visible bodies can be determined.
However there are many mass structures in the Universe which are not undergoing Nuclear fusion.Their mass structure would still reflect light light like the Earth and the Moon. But if that mass structure is so far away ,the reflected light would not be visible from earth, hence it would be appear as a black hole. We can barely see stars because they appear as a small dot silouhetting the Universe.



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Answer 3

Since the 1960’s, physicists have been analyzing the theory of black holes and astronomers have been looking for examples in the universe.

A black hole is a concentration of mass so enormous that it exhibits its own gravitational force. This force is so great, that nothing escapes from it.

Researchers have found a method to find black holes and analyze their characteristics, such as their mass and gravitational force, to determine if they are in fact black holes.

Astrophysicists first look for compact, massive, dark objects in the center of nearby galaxies. Then they use Newtonian physics and a series of equations to measure the mass and spin angle of the object.

If the object is at least three times the mass of the sun, it is classified as a black hole. However, the mass of most objects found are 10 million times the mass of the sun.

Current research focuses on finding yet more black holes and in particular, discovering if they contain event horizons.

An event horizon is a one-way barrier that causes the isolation of the black hole’s interior from the outside universe. Matter, energy, information, and radiation, for example, can fall into the black hole, but nothing, not even light, can get out.

Answer 4

Who Discovered Black Holes?

Karl Schwarzschild is credited with being the brilliant astronomer who developed the concept of black holes.

In truth, English geologist John Michell was the first to suggest the existence of black holes. He referred to them "dark stars" and based his calculations on Newton's Laws of gravity. However, he doubted that such objects could exist and after publishing his information, he abandoned further research on the subject.

American physicist John Wheeler coined the name "black hole" in 1968, and is was one of the most influential scientists in the study of black holes, contributing a vast amount of research to our accepted understanding of black holes today.

Answer 5

Since nothing can actually come out of the hole, one looks for effects caused by the high gravity in the vicinity. Particles orbit such a hole, and because they are charged and accelerated, they emit light.

Answer 6

Just off the top of my pointy little non-expert head, I think I once read where one effect of stuff getting sucked into black holes is the emission of x-rays that can be detected. I'm sure the other guys above me are right too, but I thought I'd add this.

Answer 7

If you mean the one at the center of our galaxy - The Milky Way - they do it by measuring its gravitational effect on the stars orbiting nearest to it. This technique has only recently been perfected using computer stabilization of telescope images, but cannot be used on other galaxies because they are just too far away.

Answer 8

they use a method called gravitational lensing due to the enormous gravitational field of the black hole. if i m not wrong..

Answer 9

Basically they look for the emptiness of space. If you see a star system, then look at something else, and see nothing but blackness, and emptiness, then you are looking at a black hole.