The Creation, and History of Black Holes What is a black hole? How are black holes formed? And who first discovered black holes? Are all excellent questions that will be answered in this research document. However, before you are fed information on the history of black holes, you must first know the definition: A black hole is a region of space having a gravitational pull so intense that matter or light can escape. Black holes can be classified into 3 three categories based on their method of creation and size. These types are called: stellar, supermassive, and miniature black holes.
Stellar black holes are created when a massive star which are (roughly 100 times the size of our sun) collapses on itself. A supermassive black hole is just
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Black holes have been confirmed since 1971, however, Einstein's theory was the basis for these following discoveries. Another misconception is that black holes do not “suck” the mass away, this is because the gravitational pull is the reason why the object in entering the black hole to begin with. If anything the action would be called falling, as that is much more fitting. Since black holes absorb light, you may wonder: how can we see them? The answer is pretty self-explanatory, we can not see black holes. How do you find black holes? If you cannot see them then how do you know they even exist? Black holes are located by the changes in gravity they cause in space.We cannot see black holes, but we can clearly see the changes they make. For example: one of the more recent discoveries in astrophysics points to supermassive black holes being more common than we presumed. “While finding a gigantic black hole in a massive galaxy in a crowded area of the universe is to be expected – like running across a skyscraper in Manhattan – it seemed less likely they could be found in the universe’s small towns.” is the response to the supermassive black hole found in a much smaller section of the universe. The size of this giant was estimated at 17 billion suns, while the record is resting at 21 billion. With supermassive black holes being found in the more “rural” areas of the universe,
Starting with black holes, Khalili describes the creation of one. I found that a black hole is what remains when a massive star dies. Because stars are so massive and made out of gas, there is an intense gravitational field that is always trying to collapse the star. As the star dies, the nuclear fusion reactions stop because the fuel for these reactions gets burned up. At the same time, the star's gravity pulls material inward and compresses the core. As the core compresses, it heats up and eventually creates a supernova explosion in which the material and radiation blasts out into space. What remains is the highly compressed and extremely massive core. The core's gravity is so strong that even light cannot escape. This object is now a black hole and literally cannot be seen because of the absence of light. Because the core's gravity is so strong, the core sinks through the fabric of space-time, creating a hole in space-time. The core becomes the central part of the black hole called the singularity. The opening of the hole is called the event horizon. Khalili describes that there are two different kinds of black holes:
To first understand a black hole, you must understand how it is created. Most black holes are produced by dying stars that have a mass twenty times greater than our sun. A star eventually becomes a black hole because the energy and pressure pushing outward is overcome by gravity that pushes inward. For big stars the gravity force causes a star to collapse under its own weight. The star then will explode as a supernova and some outer parts of the star are sent out into space. The core is still intact, and if it has collapsed under its own weight, it will have formed a star. This core is said to have nearly zero volume, but with infinite density, known as a singularity.
The whole idea of time and black holes has been questioning scientist and many common people for decades. Whether or not the theories provided make it physically possible to allow us to ever use any type of a black hole to an advantage? Technology over these past years has allowed us to learn more and more about what black holes are and what they can do. While also allowing ourselves to discover new possibilities that they might bring forth to greater innovations in our near future. But we can only imagine, through our knowledge and technology, what a black hole could do for us, due to all the dangers they bring forth.
The origins of the super-massive black holes which concludes how they were formed and what caused them to form is an unsolved problem which is yet a mystery of astrophysics. ( Millis 2014)
The idea of Black Holes was first proposed in the 1700s by scientists John Michell and Pierre-Simon Laplace, who argued, independant of each other, that there might be objects in the universe with such a large gravitational force, that even light could be trapped. Published in 1916 Einstein’s theory of general relativity which included how gravity does affect light’s motion, gave way to scientific discoveries involving black holes. In Einstein’s own theory, he was only able to approximate the solutions to some of his own equations, however Karl Schwarzschild was able to provide the solutions. These solutions described objects like black holes that had such massive density that nothing could escape them. Schwarzschild theorized that if an object had such a small radius, that the escape velocity will be greater than the speed of light. Because as previously mentioned, nothing is faster than the speed of light, the object would be sucked into itself by it’s own gravitational pull, which would cause the object to disappear. What r...
Karl Schwarzschild is credited with being the brilliant astronomer who developed the concept of black holes. In 1916, using Einstein's general theory of relativity, he began to make calculations about the gravity fields of stars. He concluded that if a huge mass, such as a star, were to be concentrated down to the size of an infintessimal point, the effects of Einstein's relativity would get really fairly extreme. Schwarzschild doubted that a star could get that small, and theorized that if a star did infact shrink upon itself like that, its gravity would remain the same and the planets revolving around it would remain in the same orbits they always had. Since then however, some of Schwarzschild's theories have been disproved, but most of his initial theories hold intact today. The Schwarzschild Radius, the maximum radius a body with a specific mass can have that won't let light escape, is named in his honor, and the equation of which is still in use today: Rs=2MG/(c^2)
It was the botanist Robert Brown\cite{Dmouji-2006} who first realized the Brownian Motion (also called Wiener process) when trying to describe the motion exhibited by particles immersed in a gas or liquid. The particles were essentially being bombarded by molecules present within the matter causing displacement or movement. Now as we look at the Brownian Motion from a financial perspective, in the modeling of financial market especially stock market, Brownian Motion plays an important role in building a statistical model. In order to understand this process and the role it plays in financial industry, we need to know that one of most important concepts in building financial models is to understand the Geometric Brownian Motion,
Just recently a major discovery was found with the help of a device known as The Hubble Telescope. This telescope has just recently found what many astronomers believe to be a black hole, After being focuses on a star orbiting empty space. Several pictures of various radiation fluctuations and other diverse types of readings that could be read from that area which the black hole is suspected to be in.
Black holes were originally thought to have only mere mathematical concepts. There was seemingly no possible way to compress any object into a space small enough to equal to its schwarzschild radius. Later however, astronomer Subrahmanyan Chandrasekhar calculated that stars much larger than our own sun should theoretically be able to collapse into a black hole (UTFC). A star is like a blown up balloon with the force of gravity trying to compress the balloon inwards and the air trying to push the balloon outwards. Likewise, stars are held in balance by gravity trying to collapse the star inwards going against the outwards pressure of the internal reactions of the star called nuclear fusion.
The final stage of Betelgeuse is a Neutron Star. Betelgeuse will not become a black hole, because Betelgeuse has to have a heavier mass. For a star to be a black hole, it has to have two times the mass of Betelgeuse. If a star has two times the mass of Betelgeuse, its end product after the Supernova (type two) will be a black
Einstein himself, working at Princeton with Nathan Rosen had discovered that the equations of relativity actually represent a black hole as a bridge between two regions of flat space-time, a phenomenon known as the “Einstein-Rosen Bridge”. Later on, in 1963, the New Zealand mathematician Roy Kerr found that if a black hole is rotating, a singularity still forms, but in the form of a ring, not a point. It was believed that in principle, a particle may be able to fall towards the singularity, but if at some point moved through the hole instead of the ring, the particle may not be lost forever. Therefore, with these theories in mind, a particle falling into a black hole will fall through the ring that the singularity has become, then going through the Einstein-Rosen Bridge, eventually being spewed out of the white hole into another space-time continuum.
Stars are born in the interstellar clouds of gas and dust called nebulae that are primarily found in the spiral arms of galaxies. These clouds are composed mainly of hydrogen gas but also contain carbon, oxygen and various other elements, but we will see that the carbon and oxygen play a crucial role in star formation so they get special mention. A nebula by itself is not enough to form a star however, and it requires the assistance of some outside force. A close passing star or a shock wave from a supernova or some other event can have just the needed effect. It is the same idea as having a number of marbles on a trampoline and then rolling a larger ball through the middle of them or around the edges. The marbles will conglomerate around the path of the ball, and as more marbles clump together, still more will be attracted. This is essentially what happens during the formation of a star (Stellar Birth, 2004).
A star will blow up with the help of gravitational collapses. When a star explodes from nuclear fusion it is because so much mass has built up within its core and it cannot hold the weight. Neutrons are the only things in nature that can stop a core implosion. When a white dwarf suffers a supernova, the energy comes from the runaway fusion of carbon and oxygen in the core.
The "star system" was a method of developing and advancing the popularity of Hollywood movie stars. The system, which began during the height of the Hollywood studio system era, emphasized the image of the actor instead on the actual acting. The movie studio's profits were driven by the popularity of the stars that appeared in their films. According to Rocco, the stars had long term contracts with the movie studios that paid them a weekly salary, and the stars were identified with specific types of characters that would often be repeated in many movies. Belton stated that "the star provides the studio with a tangible attraction, an image that can be advertized and marketed, offsetting the less tangible qualities of the story, directing, acting, art direction, costume design, and overall studio style" (89). The star system was embraced by movie studios because the popularity of the actors heavily influences the demand for the films.
Black holes are the result of the death of a massive star, leaving behind a dense remnant core that eventually collapses to create a gravitational force so strong that nothing, including light, can escape the force. The theory that black holes existed started back in the early 1900s and since then astronomers and scientists have been trying to get a better understanding of them. This phenomenon has been a working progress for astronomers and scientists for many years and as we develop a better understanding of our solar system, the more likely it is to make a significant discovery that can answer some of the most difficult questions about our incredible galaxy and solar system. The more information we are able to acquire about our universe, the more questions we might be able to answer about our existence. With advancements in technology we may be able to see some significant discoveries and insights into the world of black holes.