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Confident researchers have trouble shooting black holes

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Confident researchers have trouble shooting black holes

Confident researchers have trouble shooting black holes

Katie Bouman, an American researcher, explained how difficult the process of drawing black holes was. Previously, he shocked the world with pictures of the first black hole in history. Katie described this process as tiring as listening to a piano with broken keys.

In his testimony before Congress on Thursday (5/17), said the technology used to photograph black holes can also be used for other purposes. For example, for medical imaging in the field of medicine, estimating earthquakes and up to autonomous cars.

Last month, this technology was able to photograph a very small black hole. Bouman compares him so small, "an orange placed on the surface of the Moon and seen from the Earth".

This black hole looks like a dark nucleus surrounded by orange halos of warm white plasma.

The black hole is at the heart of the Messier 87 (M87) galaxy. As a result, the distance is very large, measuring 40 microarcseconds. Based on the laws of physics, to be able to observe such small objects, you need a telescope as big as the whole Earth.

However, the Horizon Event Telescope (EHT) of the collaboration has spent ten years building a computer-sized terrestrial telescope. The way is to combine the signals received from various telescopes that work in pairs in different parts of the world.

However, because of the telescope's limited location, this combination of telescopes can only capture a certain number of frequencies. For this to leave gaps of information.

"By analogy, you can imagine this EHT measure as a musical note in a song, and each measure shows each note on each note," Bouman explained.

"(Then) observe the black holes in EHT is like listening to a song played by a piano with half of the broken key."

This approach creates many gaps that can be filled by various possibilities compatible with existing data.

"But your brain is quite capable of recognizing songs played on a broken piano, if enough keys can be played, City can design an algorithm that intelligently integrates the missing information with EHT to reveal the hole's image." he declared.

The image of the black hole has indeed been completed in 2017. However, the final results still have to be validated independently by the EHT team working around the world to avoid human prejudice.

These four images are produced slightly differently, but have the same basic structure. The images released on April 10 are a composite result of algorithms designed to fill the void of human interpretation. Like brain scanners, their images are based on some of the data taken by the MRI machines.
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