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Collision of black holes? Experts answer luminous cosmic burst

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2 years 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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Balochistani Graduates Selected for NUTECH Islamabad’s Mining Program

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6 days ago

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For 18 graduates of the Reko Diq Mining Project, the National University of Technology, Islamabad, has started a training program. These graduates will complete an 18-month on-the-job training program at Barrick’s International Mining Sites after completing a two-month course at NUTECH.

The graduates will acquire proficiency in mining and associated technical domains during the training program. The chosen graduates will also get specific instruction on environmental protection, safety, exploration, and geology.

Along with the development of communication skills, the curriculum will also emphasise the most recent advancements in the mining industry. Barrick’s International Graduate Development Program for 2024 includes the Balochistani graduates.

Additionally, nine Baloch graduates were selected in 2023 and transported to Barrick’s facility in Argentina for on-the-job training.

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WhatsApp will improve the updates tab by introducing new shortcuts and a revamped interface.

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1 week ago

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WhatsApp is implementing a new upgrade to refine the Updates tab interface, hence boosting accessibility for status and channel updates.

WABetaInfo reports that the upgrade introduces expedited shortcuts that streamline the updating of statuses and channels. Users can now select and upload photos and videos directly from the interface, reducing the steps involved in choosing media from the gallery.

The Meta-owned messaging application has also revamped the button for generating text-based status updates and introduced a feature for recording and sharing voice status updates. This offers customers a more expedient method to disseminate text and speech updates without depending on the floating action button.

The revisions correspond with recent modifications to other tabs, ensuring a modernised interface that improves navigation and update creation. WhatsApp is modifying the floating action button to facilitate content sharing within channels.

When selecting the floating action button, users will see several options, including creating status updates, starting new channels, or sharing photos, videos, voice, and text in existing channels. This revamp integrates all content-generating options into a singular section.

The new shortcuts are anticipated to be accessible to a broader user base in the forthcoming weeks. Beta testers can currently access them in the latest WhatsApp beta for Android, version 2.24.26.13, available on the Google Play Store.

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China and Pakistan Sign Memorandum of Understanding to Launch AI-Powered Agricultural Equipment

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1 week ago

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Through Chinese expertise, the arrangement, which was made possible by the Special Investment Facilitation Council (SIFC), intends to increase Pakistan’s agricultural output.

The Punjab government and China’s “AI Force Tech” company have inked a memorandum of understanding (MoU) to introduce advanced agricultural machinery during Chief Minister Maryam Nawaz’s visit to China.

Through the use of advanced robotic technology, the MoU seeks to transform Pakistan’s agricultural industry, guarantee economic growth, and boost farmers’ wealth with China’s assistance.

Through the partnership, Pakistan would also have the chance to absorb knowledge about China’s sophisticated farming methods.

In the meantime, plans have been revealed by the Federal Minister of Planning to send 1,000 agricultural experts to China to study contemporary farming methods.

A Chinese business and the Punjab government previously inked an agreement to introduce cutting-edge cancer treatment technologies to Punjab.

Maryam Nawaz signed a Memorandum of Understanding (MoU) with Hygea Medical Technologies while she was in China in order to introduce cutting-edge cancer treatment equipment and techniques to Punjab.

This equipment will make it feasible to treat cancer without the need for chemotherapy or surgery.

Following a meeting with Hygea Medical Technologies President Dr. Luo Fuliang, Maryam Nawaz said the organization has promised expert assistance for the establishment of the Nawaz Sharif Cancer Hospital.

She went on to say that the hospital will work with China to treat cancer patients utilizing the newest equipment and techniques following the agreement.

Maryam Nawaz and a high-level delegation are present. From December 8 to December 15, the chief minister will go to Beijing, Shanghai, Shenzhen, and Guangzhou.

CM Maryam Nawaz is expected to attend a number of conferences, events, and meetings with the goal of enhancing bilateral relations and looking into potential joint ventures in the areas of infrastructure development, technology, agriculture, and governance.

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