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This is the largest supermassive black hole map ever created

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Black holes are the protagonists of hundreds of scientific essays. His enigmatic character it has made them the protagonists of many science fiction films about space. Little by little astronomers have unveiled its mysteries, reaching conclusions such as that in the Milky Way there are between ten and one billion cosmic objects that are difficult to detect and quantify. Despite this difficulty, a group of astronomers has managed to create the largest visual map with 25,000 supermassive black holes.

At first glance the image published by researchers at the University of Hamburg in Germany may resemble a starry sky, but the reality is that each white point represents a black hole supermassive that is swallowing a star millions of light years away.

In search of black holes

It should be noted that black holes they are not visible with the usual observation instruments, but they can be detected from Earth when they devour a star or approach a cloud of interstellar matter. Consequently, these actions cause them to interact with their creation disk which is made up of gas and dust.

When black holes attract stellar material and strike it down, they emit a large amount of X-rays. These high energy signals can be detected by LOw Frequency ARray (LOFAR). It is a network of radio telescopes that is distributed in 52 stations in different parts of Europe.

The group of astronomers who created this map of black holes used LOFAR to map 4% of the northern hemisphere and thus detect the 25,000 black holes supermassive giving rise to one of the most detailed sky maps in the field of so-called low radio frequencies.

A project led by Huub Röttgerin of the Leiden Observatory together with the rest of the team, they point out in the research publication that the ionosphere negatively interfered in the mission of mapping part of the sky in search of black holes. In order to overcome this drawback, the researchers turned to supercomputers with new algorithms to correct the interference caused.

Supermassive black hole map

Information about the structure of the universe

The plan of the research team at the University of Hamburg is keep mapping the northern hemisphere, not only to continue looking for supermassive black holes, but also in order to obtain information about the structure of the universe on a large scale.

“After many years of software development, it is wonderful to see that it has now really worked,” said the astronomer Huub Röttgering of the Leiden Observatory in the Netherlands.

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Components

Engineers came up with a way to increase the cooling efficiency of processors by 700%

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Engineers came up with a way to increase the cooling

US engineers have come up with a new way to cool semiconductor products, which does not involve the use of a thermal interface. Conformal coating in laboratory conditions has demonstrated its high efficiency in comparison with traditional methods of heat removal.

Engineers came up with a way to increase the cooling efficiency of processors by 700%

Electronic devices heat up during operation, and the greater the power, the stronger the heating, all other things being equal. This problem is especially acute with the miniaturization of devices. Researchers at the University of Illinois at Urbana-Champaign have come up with a new efficient way to remove heat from semiconductor products.

Usually, a radiator is connected to the hottest places of the microcircuit through a thermal interface. For example, thermal paste. Instead, American scientists proposed to cover the entire device with a thin layer of polymer insulator, and “fill” it with a layer of copper on top, completely repeating the shape of the device. This conformal coating is in close contact with the device and effectively removes heat from it.

Engineers came up with a way to increase the cooling efficiency of processors by 700%

“We compared our coatings to standard heat dissipation methods. It turned out that our method dissipates 740% more power per unit volume.one of the researchers explained.

It is expected that in the future this invention will make electronic devices, including telephones and computers, more powerful and compact.

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US military space intelligence to spend ‘billions of dollars’ buying satellite imagery from commercial companies

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US military space intelligence to spend billions of dollars buying

The US National Space Reconnaissance Office announced the largest ever contracts worth “billions of dollars” for the purchase of satellite imagery from commercial companies. There are three such companies – BlackSky, Maxar and Planet.

US military space intelligence to spend 'billions of dollars' buying satellite imagery from commercial companies

“These contracts, which are valued in the billions of dollars and will run for the next 10 years, represent a historic expansion of commercial imagery purchases by the National Space Intelligence Agency.”the agency said in a statement.

The exact amount of contracts is not called. It is noted that they are concluded for five years with the possibility of an additional extension until 2032.

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Phones

Huge cheap smartphone with a giant battery. Tecno Pova 3 introduced

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Huge cheap smartphone with a giant battery Tecno Pova 3

Tecno introduced the Pova 3 smartphone, which boasts a huge battery and a huge screen.

Huge cheap smartphone with a giant battery.  Tecno Pova 3 introduced

The novelty received a 6.9-inch 90-Hz IPS display with Full HD + resolution. The battery capacity is 7000 mAh. Samsung has stopped experimenting with such smartphones, so it is very, very difficult to find something like this on the market.

The heart of the novelty is the SoC MediaTek Helio G88. There are 4 or 6 GB of RAM and 64 or 128 GB of flash memory. The main camera is represented primarily by a 50-megapixel main sensor, and the other two can be left out, as these are just “plugs” with a resolution of 2 megapixels. The resolution of the front camera is 8 megapixels.

Huge cheap smartphone with a giant battery.  Tecno Pova 3 introduced

From the rest, we can note stereo speakers, a design diluted with a vertical stripe, 25-watt charging and 10-watt reverse charging. By the way, for some reason, a 33-watt charger comes with the device, so this value appears in some promotional materials, which is confusing.

In the Philippines, where the smartphone first debuted, it costs just $172.

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Netflix hid nine NFTs in its Love, Death + Robots series

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Netflix hid nine NFTs in its Love Death Robots

The third season of Love, Death & Robots premiered on Netflix last Friday. The service prepared a surprise and placed QR codes in different places and episodes that allow you to “mint” NFTs.

Netflix hid nine NFTs in its Love, Death + Robots series

Minting, also often referred to as minting, is the process of creating a non-fungible token and “registering” it on the blockchain. Usually, in order to “mint” NFT, you need to pay a network fee. After that, information about the non-fungible token and its author will be included in the blockchain.

The most popular NFT minting network is Ethereum. In February 2022, the amount of non-fungible ETH tokens used for minting reached a maximum.

The action is calledHunting 101“. The point is that the organizers hid 9 different NFTs in the form of QR codes. And the task of the viewer is to find them.

NFTs can be found both in the digital world of the series and in the real world: for example, on billboards and billboards.

When the user has found and scanned the QR code, it is necessary to mint the token through a smart contract. Or the second option is to simply download the JPEG image to your device.

According to the show’s official OpenSea account, viewers have only found three NFTs so far.

The number of tokens is not limited. This means that any user can find the same QR code and mint the NFT. The company does not charge for this. But in order to transfer NFT to your Metamask wallet, you need to pay for gas on the Ethereum network.

Further, the user can keep the tokens for himself for the collection, or resell on OpenSea. Now the average price of an NFT from Netflix is ​​0.0031 ETH (about $30).

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