How did the scientist take this recent picture of a Black Hole?

news7f10/09/2022

2 4 minutes read

This is the first realistic image of a black hole. So far we’ve got black hole theory, cosmic data, art painting, black hole excitation but we’re not capable of taking pictures of black holes and so there’s a big question mark (? ) About the existence of black holes. But the clear picture of a black hole is not just our empty imagination.

This image is of the black hole Messier 87 (M87), 55 million light-years from Earth at the center of the constellation Virgo. This is an image that is mostly similar to the Astronomer’s prediction and is also a testament to Einstein’s theory of general relativity.

Anyway, this image was taken by the Event Horizon telescope

Guys, first we will understand

How scientists discovered black holes in space

What is the Event Horizon Telescope and how does it work?

How scientists captured images of black holes

History of Black Holes

In 1915, Einstine proposed the General Theory of Relativity and said that gravity is not a force but distortion of space and time that’s because mass means that if an object has more mass it will skew time and space more. Their theory gave the answer about the newton that didn’t explain where “From where gravity comes” and how it worked. But he found Field Equation predict foreign objects. An Object that has infinite Gravity and near-stop time and can destroy space and time.

A history of thought-shaping ideas about black holes | WIRED

(Google image source)

Because of these strange properties, Einstien believed that such an object did not exist. Yes, we are talking about that object we now call Black hole But giving only an approximate solution of field theory In the same year, Kark Schwarzschild gave the perfect solution of field theory and on that basis he gave Combined Schwarzschild, Schwarzschild Metric, Schwarzschild Radius, Schwarzschild Black Hole, Schwarzschild Wormholes Theories

How scientists discovered black holes in space

Many scientists like Stephan hawking predicted different properties of black holes And the Era of Black Hole Debate began. Because of that call began to discover black holes. But it is very difficult to detect black because this object has such a strong gravity that even light cannot escape and as a result we cannot see them.

We want to detect Black Holes but hear questions coming how? Theory says that every galaxy has a Black Hole at the center So if we want to detect a black hole we have to keep an eye on one of the centers of the galaxy Because black holes have strong gravity. so we can’t see them directly.

Glow discs: How black holes light up their surroundings...

(Google image source)

We can only see their brilliance produced in the black hole accretion disk that means If we find an object in the galaxy that has a light and a black point at its center, that means it is a black hole.

Anyway, at first the scientists intended was to try to detect the black hole at the center of our Milkyway galaxy then they found for some reason the black hole M87 in the constellation Virgo easier to catch.

Reason

It is larger than the Milkyway black hole.
There is a lot of dust in the path of the Milkyway black hole, and the telescope can’t get through and capture the image.
Easily spot the bright glow of the galaxy M87 Than Milkyway

So the scientist decided to take pictures of M87 first

What is the Event Horizon Telescope and how does it work?

The Event Horizon Telescope is not a single telescope but a network of many telescopes located in different regions of the earth, in its own right.

Let’s see how Event Horizon works

First images of black holes from the Event Horizon Telescope

(Google image source)

A single telescope can only capture images of the star. If we need to take pictures of black holes, we need a large telescope.

The reason behind it

The light wave near the black hole is circular like when you throw a rock into a lake, it will create a circular shape. If the light waves were emitted in the same way from a black hole, it wouldn’t be difficult to catch them, but the distance between the black hole is so wide that the circular light waves patting the earth will become the sun. plane. Is it difficult to spot them?

How scientists captured images of black holes

So, to image the black hole in that waveform, we need a telescope the size of the earth. But it is not possible to build a telescope the size of the earth.

Scientists used eight telescopes to record the first image of a...

(Google image source)

To overcome this problem, the scientist decided to synchronize all the telescopes located in different parts of the earth and all of them are synchronized by one atomic clock which means that all telescopes are synchronized. both of them will operate at the same time as a single telescope.

Because the Horizon event is a network of many telescopes, all of their other telescopes must synchronize perfectly (without any errors) otherwise they will not function properly.

As we know, the event horizon is a mixture of many telescopes. If they are not perfectly synchronized, the data collected from the different telescopes when they come together, they will not get a perfect picture of a black hole.

To make sure they work together, they synchronized all the telescopes with atomic clocks (atomic clock difference 1 second every 100 million years)

Thereafter, the Event Horizon telescope tracked the supermassive black hole M87 for many years at Radio waves with a radius of 1.3mm

Recorded data of all telescopes are at petabytes

Since all the data is in petabytes they cannot be shared over the internet so they are stored in the hard drive and then they transfer all the data to a supercomputer and reconstruct the image.

Once the image is ready, to secure the image they send all the data to the different scientists and ask them to reconstruct the image without showing the actual image.

Then they collect all the data from different scientists all over the world. When they see that image, all images are exactly the same as their image.

And then they claimed the real picture of Black Hole.

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