universe
April 14, 2019
What is blackhole || structure || observability
What is Blackhole- Structure, Observability
What is blackhole || structure || observability
Introduction of Blackhole
A blackhole is an area of spacetime, which shows such strong gravitational effects that nothing can escape from it - such as light particles and electromagnetic radiation. The theory of general relativity predicts that a sufficiently compact mass may distort space time to create a blackhole. The extent of the area from which no escape is possible, the event is called horizon. Although the event horizon has a lot of impact on the fate and circumstances of any object, yet no locally-identifiable features are seen. In many ways, a blackhole works like a perfect black body, because it does not reflect light. Apart from this, quantum field theory predates the winding spacetime, that event horizons emit Hawking radiation, as opposed to its mass in the form of dark body temperature of the same spectrum. This temperature is on the order of billions of kelvin for the blackhole of stellar mass, which is essentially impossible to observe it.When the stars fall at the end of their life cycle, the stellar mass is expected to become blackholes. After the formation of a blackhole, it can continue to develop by absorbing the surrounding mass. By absorbing other stars and merging with other blackholes, millions of solar masses (M form) can become supermassive blackholes. The consensus is that there are supermassive blackholes in the centers of most galaxies.
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The idea of an object in space is so large and intensive that light could not survive for centuries. The most famous, blackhole prediction was made by Einstein's theory of general relativity, which showed that when a massive star dies, it leaves behind a small, dense residue core. If the mass of the core is more than three times the mass of the Sun, then the equations showed, the gravitational force overwhelms all other forces and produces a blackhole.
Scientists can not inspect the blackhole directly with the telescope, which detect X-ray, light or other forms of electromagnetic radiation. However, we can detect the presence of blackholes and find out their effect on other nearby issues and study them. If a blackhole interstellar passes through a cloud of matter, for example, it will attract incoming in a process known as accretion. A similar process can be passed on near a normal star blackhole. In this case, the blackhole can separate the star because it pulls it toward it. As the attracting material is sharp and warm, it emits X-ray reaching space. Recent discoveries provide some technical evidence that Blackholes has a dramatic effect on the surrounding areas - powerful gamma rays burst, destroy nearby stars, and develop new stars in some areas Preventing it while stopping it in others.
What is Blackhole Observability
Blackholes can not be seen directly due to their small size and the fact that they do not emit light. However, they can be "observed" with the effect of their vast gravitational fields on the nearby case. For example, if the blackhole is a member of a binary star system, then the material flowing through it with its companion becomes intensely hot and then before entering the event horizon of the blackhole and before disappearing forever, the X Rapidly irradiates RA The binary X-ray system is a blackhole in the component wires of Cygnus X-1. In 1971, the constellation was discovered in cygnus, with a blue supergiant and an invisible partner in this binary, the Sun's mass is 8.7 times which revolves around each other over a period of 5.6 days.
Some blackholes clearly have nonsteller origins. Different astronomers have speculated that large amounts of interstellar gas are collected in the supermassive blackholes at the centers of Kaiser and Galaxies. The mass of rapidly falling gas in the blackhole is estimated that through nuclear fusion the energy equal to the mass of the mass gets 100 times more energy. Accordingly, under a gravitational force in a large blackhole, millions or billions of interstellar gas will be responsible for the production of solar mines and huge galactic systems.
What is Blackhole Structure
The description of the structure of the blackhole is calculated by the general principle of Albert Einstein's relativity. Singularity forms the center of the black hole and it is hidden from the "surface" of the object, event horizon. Escape velocity inside the event horizon (i.e. the necessary velocity for the substance to avoid the gravitational field of a cosmic object) crosses the speed of light, so that the rays of light can not go into space. The radius of the event horizon is called Schwarzshild radius after German astronomer Carl Schwarzchild, who predicted the existence of collapsed stellar bodies that emitted no radiation in 1916. The size of the Schwarzschild radius is in proportion to the mass of the star that collapses. For the blackhole 10 times larger than the Sun, the radius will be 30 km (18.6 miles).
Only the largest stars - having more than three solar masses - become blackholes at the end of their lives. Stars with fewer masses of masses develop in less compressed bodies, either white dwarfs or neutron stars.
