Science & Technology

The peek at the black hole

  This is another piece of news about the black hole. We are talking about black holes frequently. There is new news that is forming related to the black holes. This is one such. That is not only a black hole. But it is a deep black hole. What are the specifications for that? We are here to talk about that. You know in the last year the picture of a black hole released to the public. I told you about that. Could you remember it??? Definitely you can. 

  First, we will see what the black holes are?? Before moving to the main topic, we have to take a rough idea. 

     We talked about the released picture of the black hole. Through that people saw the truth including things inside the black hole. Now it is not a secret in the future. I think the curiosity of the people relieved. 

   Now there is another special method to detect the above. Also, that is a new method. The name of that method is the x-ray echo. There is another black hole that came to the view. There is a certain location for that. The location is IRAS 13224 – 3809. There is a long-distance to it from us. I can tell you the length. That is approximately a billion light-years away. There is another important thing to tell you. There is a special thing around the black hole. That is the x-ray corona. I expect to tell you about the IRAS 13224 – 3809 and the x-ray corona. I’ll tell you both of them in the following. 

Event Horizon and X-ray

Blackhole image – black hole and the event horizon is visible in this picture

    Through the x-ray corona and the x-ray, echo scientists created a map. That is not only a normal map. That is a detailed map. Detailed map of the surrounding with the horizon. That is a special region. Through that light also cannot travel. There is even another way to describe it. That is the light cannot escape from the above area. Yes, that area is as powerful as that. That is known as the black hole’s event horizon. 

   We can’t find black holes through light. We can find that only by the materials. That only observation can be made when materials fall into the black hole. For that scientists have to wait very calmly and patiently. That is a great thing 

These above things are more accurate than the above-received details. The second time details give clues about the evolution of the expansion of the black hole. Even though the above measurements, scientists can get an idea about the formation of the galaxies. In the above, I told you about a special galaxy. That is IRAS 13224 – 3809. There is a spacecraft assigned to observe the above galaxy. That is the MXM Newton spacecraft. The above spacecraft is to make observations about the cosmos rays. 

      You know that the above tests are done by the x-ray detectors. From the black holes, the x rays can be emitted. Most of the x rays directly travel to the cosmos. While some of the others travel in other directions. Some others move to the accretion disk. 


Blackhole artwork

    There is a name for the name of that measurement. There is a time delay here. That is called the reverberation. Such a special name. The above incident helps to find the materials around the black hole. Especially these are gassy materials. Using the reverberation process the mapping has taken place. Using the above mapping the objects in very far also detected. 

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  Scientists also need to measure another thing. That is the mass of the black hole. For that one thing had to be found. That is the origin place of the gas and the departure place of the above gases. According to the details of the above mapping. That is the mass. The mass of the above black hole is equal to the total mass of the two million suns. You know in one opportunity every experiment cannot be successful. Scientists tried this test about 16 times. The features of the scientists are like that. They didn’t stop until the success of their experiment.

  We will discuss something for today. That ia an important topic. 

 The corona 

fantasy of blackhole

    This is a greek word. There is even a connection between the Latin term even. That means the crown. This is a cover. I mean this is like a cover. This above cover will cover the stars and the sun. It is very hot. Even that is hotter than the surface of the sun. The above corona is not uniformly covered the surface of the earth. In 1973 the above corona was captured by a special satellite. That is the satellite skylab. 

    The above are some brief details about the corona. I told you many important details. I think you are happy to hear the above. You can use the above details in a positive way. If there are new such types of facts I will tell you those related to them. 

Science & Technology

The secret behind the dimming stars

 You know that stars are glowing. Actually they are very bright objects. We can see them clearly in the night sky. But they are always available. In the darker medium, we can only see them. You know about the constellations. Those are the set of stars that are divided according to a pattern. Those patterns have a name. That name is the above-mentioned one. We can even see them from our naked eyes. Today we aren’t here only to talk about stars. But we are to talk about the story behind the bright stars. 

As per the introduction, we will see what is a star 

A nebula ( new star cam born someday from this nebula)

   The above are all the details of the stars. Then we will move to the main topic. Here the important instrument is the Gaia observatory. Through the above instrument, it detected a bright star. Then it dimmed. After some days that star came to the view. Like earlier this time even it dimmed. 

  Scientists cannot even suggest a possible reason for that behaviour. Therefore they further care about that. Finally, they have to suggest that it is because of gravitational power. Star is situated very far from us. The light is magnifying when travelling towards us. Can you imagine the distance of the star??? That is a binary star. It is 2544 light-years away. 


   We can’t observe that clearly because of the less brightness. Because of that, they have to try exceptional ways. To find what, they have to use extraordinary ways??? They want to find mass, orbit, and distance. Can you guess the method to find out that? There are two of them. Those are through the gravitational effects and the magnification of the light. 

Milkyway galaxy, Home of millions of stars

 . The above way is very significant. There is a reason for that. After using that method to find out the above facts, it uses some other thing. That is to detect very far objects in the Milky Way. Actually that could be a positive way. According to the research, there may be millions of masses in space. You know the leading observation caused by the above discovery. That is the repeating brightening and dimming star. Then for the easy introduction, this has given a special name. That is Gaia16aye.

   This is an object that is producing an amazing thing. That producing thing is the gravitational microlens. That effect is made by the theorem of the great scientist Einstein. But microlens became huge when detecting the above incident of Gaia16aye. Later we will see more about the Gaia16aye. And the microlens became different in the high magnification regions. These are the main details about the dimming star. Then we will see some about the Gaia16aye. 


   As you know this is a gravitational microlensing event. This was first detected through the Gaia space observatory. The source star has a magnitude of 14.5. That is a star Cygnus. That was first observed in 2016. Actually on the 9th of August. 

  Those are some little details about the Gaia16aye. Then we will see the details of the Gaia telescope or the Gaia space observatory. 

Gaia space observatory 

Star trail image. this is one thing happens because of earth’s rotation

    Gaia is a spacecraft by the European space agency. About 2013 this spacecraft was launched. And scientists expect to operate this until 2022. That spacecraft designed for various tasks. I decided to tell you some of them. That was designed for the astronomy, distance and the motion of the stars in space and measuring the positions. The last aim of this mission is to make the largest 3D space catalogue. And to examine approximately 1 billion stars. 

   The Gaia spacecraft is included in the astrometric observatory. There are exceptional payloads here. Some of them are astrometric instruments, photometric instruments, and radial velocity spectrometers. 

  There is another speciality of this spacecraft. That is, it will examine its targets about 70 times. That is essential to determine the exact places of the stars. Already you know about the 3-dimensional map. That includes the descriptive details of the luminosity, effective temperature and the gravity of the elements. 

  In the future, there will be another project introduced. GaiaNIR is a future proposed project. With this project, the project can be widened. Here the GaiaNIR means the Gaia near the infrared. That means this project can be done with the infrared rays. Therefore some natural objects can be detected with infrared rays. Those objects cannot be detected normally. 

   Then we have come to the last part of our article today. I told you more details about the stars. Other than that Gaia16aye and about the important Gaia space observatory. I think I gave you the most important details of the above topics. Insert them to your knowledge library. Then we will meet at another one. 

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