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What a dying star looks like – James Webb Telescope tells us

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What a dying star looks like - James Webb Telescope tells us

 Glorious photos of a fading star SN1987A which turned supernova in 1987 – the closest and brightest star explosion seen from Earth – were released on Thursday. 

In the capture it emerges that dying star appears to be a necklace surrounded by emitted material of gas, and dust including two pearls earlier not detected by the European Hubble Space Telescope.

The new revelation — at a distance of 170,000 light-years — has allowed astronomers to dive deep into the life cycles of stars and the pattern of their death. This supernova in the Southern hemisphere of the sky is the most observed celestial object in space.

The image shows a series of luminous rings that represent bands of gas and dust pushed out by SN1987A in its various stages of death since it was excited and illuminated by the expanding shockwaves emanating in the last moment of the collapse and going supernova.

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According to the scientists, one of these rings is a string of pearls, which comprises material ejected about 20,000 years before the final occurrence.

It became possible through the James Webb Space Telescope which provided a clear view till date of the necklace and the diffusing brightness surrounding the star.

“We’re able to see new hotspots emerging outside the ring that has previously been illuminated,” Dr Roger Wesson from Cardiff University, UK told BBC News.

“In addition, we see emission from molecular hydrogen in the ring that was not necessarily expected and something only JWST could have revealed with its superior sensitivity and resolution,” he added.

New features that came to the fore by James Webb are the crescents or arcs of emission inside the cosmic jewellery necklace but just outside the dense inner area that looks a little like a keyhole.

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“We don’t really understand the crescents yet,” lead analyst Dr Mikako Matsuura said, adding that “this material could be being illuminated by some kind of reverse shock — a shock coming back towards the keyhole.”

Despite its potency, JWST cannot see the remnants of the dying star that are buried somewhere in the dense dust field. Those remnants should be compact objects made up of neutron particles and measuring just a few tens of kilometres across.

Since the star went supernova, every large telescope that can see SN1987A has observed and studied its evolution and other features.

While tracing the causes, astronomers believe that the star was hot, relatively young, probably 20 to 30 times as massive as our Sun.

Dr Wesson said: “One of the mysteries of this star is that it exploded when it was a blue supergiant when at the time all the theories said only red supergiant stars could explode. So unravelling that mystery has been one of the great quests.”

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“The indications are that Webb will be operational much longer than originally envisaged — maybe 20 years — and that will give us a very powerful tool to keep on monitoring SN1987A to see how it is changing.”
 

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Microsoft to invest 2.2bn dollars in cloud and AI services in Malaysia

Microsoft to invest 2.2bn dollars in cloud and AI services in Malaysia

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Microsoft to invest 2.2bn dollars in cloud and AI services in Malaysia

Microsoft (MSFT.O) said on Thursday it will invest $2.2 billion over the next four years in Malaysia to expand cloud and artificial intelligence (AI) services in the company’s latest push to promote its generative AI technology in Asia.

The investment, the largest in Microsoft’s 32-year history in Malaysia, will include building cloud and AI infrastructure, creating AI-skilling opportunities for 200,000 people, and supporting the country’s developers, the company said.

“We want to make sure we have world class infrastructure right here in the country so that every organisation and start-up can benefit,” Microsoft Chief Executive Satya Nadella said during a visit to Kuala Lumpur.

Microsoft will also work with the Malaysian government to establish a national AI Centre of Excellence and enhance the nation’s cybersecurity capabilities, the company said in a statement.

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Prime Minister Anwar Ibrahim, who met Nadella on Thursday, said the investment supported Malaysia’s efforts in developing its AI capabilities.

Microsoft is trying to expand its support for the development of AI globally. Nadella this week announced a $1.7 billion investment in neighbouring Indonesia and said Microsoft would open its first regional data centre in Thailand.

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Nvidia supplier SK Hynix says HBM chips almost sold out for 2025

Nvidia supplier SK Hynix says HBM chips almost sold out for 2025

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Nvidia supplier SK Hynix says HBM chips almost sold out for 2025

South Korea’s SK Hynix (000660.KS) said on Thursday that its high-bandwidth memory (HBM) chips used in AI chipsets were sold out for this year and almost sold out for 2025 as businesses aggressively expand artificial intelligence services.

“The HBM market is expected to continue to grow as data and (AI) model sizes increase,” Chief Executive Officer Kwak Noh-Jung told a news conference. “Annual demand growth is expected to be about 60% in the mid-to long-term.”

SK Hynix which competes with U.S. rival Micron (MU.O) and domestic behemoth Samsung Electronics (005930.KS) in HBM was until March the sole supplier of HBM chips to Nvidia, according to analysts who add that major AI chip purchasers are keen to diversify their suppliers to better maintain operating margins. Nvidia commands some 80% of the AI chip market.

Micron has also said its HBM chips were sold out for 2024 and that the majority of its 2025 supply was already allocated. It plans to provide samples for its 12-layer HBM3E chips to customers in March.

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“As AI functions and performance are being upgraded faster than expected, customer demand for ultra-high-performance chips such as the 12-layer chips appear to be increasing faster than for 8-layer HBM3Es,” said Jeff Kim, head of research at KB Securities.

Samsung Electronics (005930.KS) which plans to produce its HBM3E 12-layer chips in the second quarter, said this week that this year’s shipments of HBM chips are expected to increase more than three-fold and it has completed supply discussions with customers. It did not elaborate further.

Last month, SK Hynix announced a $3.87 billion plan to build an advanced chip packaging plant in the U.S. state of Indiana with an HBM chip line and a 5.3 trillion won ($3.9 billion) investment in a new DRAM chip factory at home with a focus on HBMs.

Kwak said investment in HBM differed from past patterns in the memory chip industry in that capacity is being increased after making certain of demand first.

By 2028, the portion of chips made for AI, such as HBM and high-capacity DRAM modules, is expected to account for 61% of all memory volume in terms of value from about 5% in 2023, SK Hynix’s head of AI infrastructure Justin Kim said.

Last week, SK Hynix said in a post-earnings conference call that there may be a shortage of regular memory chips for smartphones, personal computers and network servers by the year’s end if demand for tech devices exceeds expectations.

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The Nvidia (NVDA.O) supplier and the world’s second-largest memory chipmaker will begin sending samples of its latest HBM chip, called the 12-layer HBM3E, in May and begin mass producing them in the third quarter.

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Qualcomm jumps as AI sparks rebound in Chinese smartphone market

Qualcomm jumps as AI sparks rebound in Chinese smartphone market

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Qualcomm jumps as AI sparks rebound in Chinese smartphone market

Qualcomm (QCOM.O) shares rose 4% in premarket trading on Thursday after the smartphone-focused chipmaker signaled an AI-fueled rebound in demand, especially in China, after a two-year slump.

Sales to Chinese smartphone makers jumped 40% in the first half of its fiscal year, the company said on Wednesday, as buyers there gravitate toward higher-priced devices that can accommodate AI chatbots.

“Chinese vendors who traditionally relied more on MediaTek, are going to start leveraging Qualcomm’s high-end chips more as they push hard into the AI Agenda,” said IDC analyst Nabila Popal.

“They further represent an upside for Qualcomm because majority of the recovery is also going to be driven by Chinese OEMs this year, coming from a tough last two years.”

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Qualcomm on Wednesday projected third-quarter sales that were above estimates as it also benefits from its IoT (Internet of things) and auto segments.

The company, the biggest supplier of smartphone chips, was on course to add more than $8 billion to its market value based on premarket movements. Other semiconductor firms such as Arm and Broadcom (AVGO.O) rose 2.8% and 2.4%, respectively.

According to preliminary data from research firm IDC, in the high-end segment, the AI buzz and the foldable products allowed the Android smartphone vendors to further differentiate themselves from Apple (AAPL.O) and garnered increased interest from Chinese consumers in the first quarter of 2024.

“We’re optimistic that numbers can be driven higher, given last year’s muted Android cycle and the likelihood of IoT(internet of things) improvement as inventory normalizes,” analysts at Wolfe Research said.

At least 14 analysts raised their price targets on Qualcomm, according to LSEG data.

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Qualcomm’s shares have gained 13.5% this year following a 31.5% rise in 2023.

Shares of Apple, which is set to report earnings after market closes on Thursday, were up 1.05% in premarket trading.

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