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Black hole (Part-2)

by Aminul Islam
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     Black hole (Part-2)

They look like waves and they throw a laser into the sky from a telescope to solve this problem.  Computer programming is used to solve problems in the Earth’s atmosphere and set a mirror inside the telescope to increase the sharpness of the light coming from the center of the Milky Way galaxy.  Can change and thus they are able to capture the serpent image of the center of the Milky Way galaxy.  They then spent several years observing the behavior of those around the center of the Milky Way galaxy.

They see that when a star comes close to the center of the Milky Way galaxy, its speed increases abnormally.  Such an abnormal increase in the speed of the stars means the same thing.They must revolve around an object of extreme mass, and that mass is 40 million times the mass of the Sun.

So it is certain that the center of our Milky Way galaxy is a supermassive black hole whose mass is 40 million times the mass of our Sun and the radius of the event horizon of that black hole is about 17 times the radius of our Sun or 130 million kilometers.  Then you can understand how big this black hole is and this black hole is named

Sagittarius ♐️ A *.

The nearest galaxy to the Milky Way galaxy is Andromeda, about 2.5 million light-years away.  The mass of the supermassive black hole at the center of Andromeda is about 8 to 100 million solar masses, and if that black hole were to be the center of our solar system, Mercury, Venus, Earth, and Mars would move within the event horizon of a black hole so large and 100 times the mass of the Sun in the universe.

There are black holes 200 million times the mass.  Now the question is how such a huge supermassive black hole is created. Because there are no stars of such a huge mass in the universe from which a supermassive black hole can be created by the supernova explosion.

One answer to how so many supermassive black holes came to be, then, is that black holes grow larger by slowly swallowing the stars around them, like the Cygnus X-1 shown earlier.  But it takes a long time for a black hole to become a supermassive black hole in this way.

Thus, supermassive black holes were not created in this way. Scientists later noticed that if an unlucky star moved around a black hole at some point in its orbit, the black hole would be able to swallow the entire star relatively quickly.  Now, no matter how slowly or rapidly a black hole consumes particles, it is not possible to create such a huge supermassive black hole.  Because time becomes the main problem here.

The time it takes to absorb particles and become such a supermassive black hole is calculated to be longer than the Big Bang.  So a supermassive black hole was never created by swallowing a particle.  Because according to the Arthur Eddington limit, black holes can never do anything very fast.  Black holes are filled with large amounts of gas and radiation jets at almost light speeds in the distance, and the surrounding gas and particles move away due to the pressure of the radiation emitted from these jets.  So there is a limit to how fast a black hole can swallow an object, and that limit is called the Eddington limit.

In this case, many people think that supermassive black holes were born with huge size at birth and this has been made possible by direct collapse.  As many of us have seen tornadoes, the idea of ​​scientists creating supermassive black holes revolving around gas and dust tornadoes.  This is not the case here.  This is called direct collapse, but it is only a concept.

However, the most powerful James Wave telescope in human history is being built in such a way that it can detect infrared rays.  It may be possible to learn a lot of new things.  But not only is the universe known by sight, but we can also hear the universe, and to hear the universe you must go to the Ligo Observatory in the United States, where the gravitational wave is observed.  According to Einstein’s general relativity, when an object moves, the object replicates the space-time around it.

That is space-time contracts and expands.  Much like a wave, and similarly, when two objects come together, there is a contraction and expansion of space-time.  Now if people could detect this gravitational wave, they would know a lot about supermassive black holes.  But how can a gravitational wave be detected from Earth?

In detecting gravitational waves, Ligo uses light in their observatories.  Light from a light source is transmitted to two different places and the light is reflected from those two different sources and merges at a certain point and falls on a detector.  Now if the distance is not more or less in two different places, nothing can be seen in the detector.

This means that light coming from two different places will cancel each other out and if the distances between two different places are side to side then the light will be found in the detector.  As a result, the detector will be illuminated, and the idea is to set up the necessary instruments in two locations in the United States and to be very careful in setting up the instrument so that no noise can affect the results.

The reason for setting up the two setups is to verify whether the result obtained is actually a gravitational wave.  If the disturbance of the path of light is created in two places, then it can be said with certainty that it is a gravitational wave.  And if disturbance does not occur at the same time in two places, then it must be understood that noise or something else has happened here.

Scientists finally saw a signal on September 14, 2015.  This is the image of the signal which is the real proof of Einstein’s predicted gravitational wave.  By observing these signals, scientists can understand that the collision that caused this gravitational web to occur occurred about 130 million years ago and that the two objects that collided were two black holes.  The mass of one was 29 Solar mass and the mass of the other was 36 Solar mass.

These two black holes combine to form a large single black hole, and from this observation, scientists can understand that black holes do not only consume particles, but black holes can swallow black holes, and that repetitive phenomenon may have created supermassive black holes.  Ligo received the Nobel Prize in 2017 for its historic work.

Now let’s give a startling fact, it is possible to create a black hole in the world.  Scientists at least think that if two subatomic particles could collide at speeds close to the speed of light at very, very high speeds, a very thin Tiny black hole would form and that black hole would last for a very short time.

Europe-based CERN is trying to create a tiny black hole in their large hydraulic collider, the LEC.  The problem is that sub-atomic particles have not yet been able to achieve the speed they need to create black holes.  However, in the future, it may be possible to achieve that speed and if that is possible then it will be possible to know more details about black holes.

About Blackhole

Now the most important question is, what is the future of black holes?  The answer to this question can be said from two different angles.  First, Stephen Hawking states that black holes emit a type of radiation called Hawking radiation.

Now if Stephen Hawking is right, the black hole will be exhausted while emitting radiation.  Although the existence of Hawking radiation has not yet been found.Second, if there is no such thing as Hawking radiation, then all the objects in the universe would be swallowed up by a black hole and become a super, supermassive black hole, and with that, our reality would come to an end.

Now at the very center of the black hole, what is called the singularity, we do not know what is actually there.  As a result, a new reality may start from there.

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About Blackhole

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