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Collision of black holes? Experts answer luminous cosmic burst

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1 year ago

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A new study has attempted to answer a massive, luminous burst which was 100 times more radiant than our milky way in a galaxy named OJ287, located at a distance of five billion light years.

Scientists suggested this must have come from a system with two black holes.

The smaller one orbits, the larger one at around the speed of light. According to the study published in Monthly Notices of the Royal Astronomical Society, their spiral dance was responsible for luminosity.

The scientists noted that the recorded burst, observed in February last year, occurred when the smaller black hole crashed into a disk of gas surrounding the larger black hole.

These discs — also called accretion discs — are common in black holes, particularly in the supermassive black holes that are present at the centre of the giant galaxies.

Their gravitational pull is so potent that they rip apart everything that comes into their event horizon.

This animation illustrates the activity surrounding a black hole. While the matter that has passed the black holes event horizon cant be seen, material swirling outside this threshold is accelerated to millions of degrees and radiates in X-rays. Nasa Solar System Exploration/File
This animation illustrates the activity surrounding a black hole. While the matter that has passed the black hole’s event horizon can’t be seen, material swirling outside this threshold is accelerated to millions of degrees and radiates in X-rays. Nasa Solar System Exploration/File

After falling into the large black hole, the smaller one swallows up some of the gas at the accreditation disc, which energizes an explosive jet of radiation, ejecting from the smaller black hole.

The author Mauri Valtonen from the Tata Institute of Fundamental Research, in a statement: “According to the estimates, the flare occurred shortly after the smaller black hole had received a massive dose of new gas to swallow during its plunge.”

Valtonen also added: “It is the swallowing process that leads to the sudden brightening of OJ287. It is thought that this process has empowered the jet which shoots out from the smaller black hole of OJ 287.”

The event lasted for only a day.

“An event like this was predicted ten years ago, but has not been confirmed until now,” Valtonen said.

A disk of hot gas swirls around a black hole in this illustration. The stream of gas stretching to the right is what remains of a star that was pulled apart by the black hole. — Nasa/File
A disk of hot gas swirls around a black hole in this illustration. The stream of gas stretching to the right is what remains of a star that was pulled apart by the black hole. — Nasa/File

He said: “It turns out that we have simply just had bad luck. Nobody observed OJ287 exactly on those nights when it did its one-night stunt.”

The black holes are “so close to each other in the sky that one cannot see them separately, they merge to a single point in our telescopes,” Valtonen noted.

Co-author of the study Achamveedu Gopakumar from the Tata Institute of Fundamental Research, said: “The total number of predicted flares now number 26, and nearly all of them have been observed.”

The study remarked that such explosions would continue to occur as the smaller black holes orbit the bigger ones, though they’ll be irregular because the 12-year orbit is oblong. 

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Microsoft and BlackRock are set to establish a $30 billion fund for artificial intelligence infrastructure.

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12 hours ago

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AI models, particularly those employed in deep learning and extensive data processing, necessitate considerable computer power, resulting in increased energy usage.

The computational demands of AI have compelled technology firms to interconnect thousands of chips in clusters to attain the requisite data processing capacity, resulting in a significant increase in the demand for specialized data centers.

The investment entity, termed Global AI Infrastructure Investment Partnership, seeks to improve AI supply chains and energy procurement, according to BlackRock and Microsoft.

MGX, the investment firm supported by Abu Dhabi, will serve as a general partner in the fund, while Nvidia (NVDA.O), a manufacturer of AI chips, will provide its expertise.

The collaboration is expected to generate a total investment potential of up to $100 billion, inclusive of loan funding, according to the corporations.

The investments will primarily be in the United States, with the remainder allocated to partner countries, as stated by the firms.

The Financial Times initially reported on the development.

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Pakistan ascends 14 positions in the UN E-Government Index 2024.

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12 hours ago

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This significant breakthrough signifies Pakistan’s shift from the “Middle EGDI category” to the “High EGDI category” for the first time, indicating considerable improvements in digital government capabilities.

The nation’s E-Government Development Index has risen to 0.5095, an increase from 0.42380 in 2022. Although Pakistan remains behind global leaders such as Denmark (0.9847) and regional leaders like Singapore (0.969) and the Maldives (0.6745), this enhancement is a significant accomplishment.

Minister of State for Information Technology Shaza Fatima Khawaja has reaffirmed the government’s dedication to establishing a digital Pakistan.

During an event in Islamabad on Wednesday, she underscored the necessity for collaborative endeavors to promote innovation among the youth.

She asserted that the private sector ought to have a pivotal role in realizing a digital Pakistan. Shaza Fatima said that the administration is endeavoring to deliver exceptional stable and rapid internet connectivity.

She emphasized that Pakistan’s position in the UN’s e-governance development index had ascended by fourteen points. She stated that we are one of two Asian countries that have advanced from the medium tier to the top tier of digital e-governance, characterizing this as a notable accomplishment.

The Minister of State further asserted that Pakistan has made significant advancements in cyber security, attaining a premier rank in this field.

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AI detecting techniques are going to be introduced by YouTube.

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7 days ago

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The artificial intelligence (AI) tools that YouTube plans to introduce have been unveiled. Using artificial intelligence technology, these technologies intend to assist in identifying individuals, voices, and music inside videos found on YouTube.

With the help of artificial intelligence synthetic sounds, the company has improved its Content ID system so that it can identify instances of copyright violations in songs.

The new function, which identifies artificial sounds emulating those of artificial singers, notifies users. The first edition will be made available to the public the next year, and then it will be taken to a more widespread audience.

A feature that will assist in recognizing deepfake faces in videos is also being introduced by YouTube.

It will be possible for consumers to be aware of the fact that their faces are being utilized in videos that were produced by artificial intelligence without their permission.

A greater degree of control over the video platform is intended to be granted to celebrities and artists.

Those who are impacted have the ability to contact YouTube’s privacy request mechanism in order to request that films of this nature be removed from the platform.

A guideline that previously designated such videos as artificial intelligence or content that was misleading is currently being strengthened and modified by the firm.

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