Tech

Astronomers have discovered a supermassive black hole in the early Universe devouring matter at over 40 times the Eddington limit. ScienceAlert reports: Led by astronomer Hyewon Suh of Gemini Observatory and NSF's NOIRLab, a team of researchers used JWST to take follow-up observations of a smattering of galaxies identified by the Chandra X-ray Observatory that were bright in X-rays but dim in other wavelengths. When they got to LID-568, they were having trouble identifying its distance across space-time. The galaxy was very faint and very hard to see; but, using the integral field spectrograph on JWST's NIRSpec instrument, the team homed in on the galaxy's exact position. LID-568's far-off location is surprising. Although the object is faint from our position in the Universe, its distance means it must be incredibly intrinsically bright. Detailed observations revealed powerful outflows from the supermassive black hole, a signature of accretion as some of the material is being diverted and blasted into space. A painstaking analysis of the data revealed that the supermassive black hole is a relatively small one, as supermassive black holes go; just 7.2 million times the mass of the Sun. And the amount of light being produced by the material around the disk was much, much higher than a black hole of this mass should be capable of producing. It suggests an accretion rate some 40 times higher than the Eddington limit. At this rate, the period of super-Eddington accretion should be extremely brief, which means Suh and her team were extremely lucky to catch it in action. And we expect that LID-568 will become a popular observation target for black hole scientists, allowing us a rare glimpse into super-Eddington processes. The research has been published in Nature Astronomy. Read more of this story at Slashdot.

An anonymous reader quotes a report from The Guardian: Sweden has vetoed plans for 13 offshore windfarms in the Baltic Sea, citing unacceptable security risks. The country's defence minister, Pal Jonson, said on Monday that the government had rejected plans for all but one of 14 windfarms planned along the east coast. The decision comes after the Swedish armed forces concluded last week that the projects would make it more difficult to defend Nato's newest member. The proposed windfarms would have been located between Aland, the autonomous Finnish region between Sweden and Finland, and the Sound, the strait between southern Sweden and Denmark. The Russian exclave of Kaliningrad is only about 310 miles (500km) from Stockholm. Wind power could affect Sweden's defence capabilities across sensors and radars and make it harder to detect submarines and possible attacks from the air if war broke out, Jonson said. The only project to receive the green light to was Poseidon, which will include as many as 81 wind turbines to produce 5.5 terawatt hours a year off Stenungsund on Sweden's west coast. "Both ballistic robots and also cruise robots are a big problem if you have offshore wind power," Jonson said. "If you have a strong signal detection capability and a radar system that is important, we use the Patriot system for example, there would be negative consequences if there were offshore wind power in the way of the sensors." Read more of this story at Slashdot.

Apple released the first beta of visionOS 2.2, introducing new "Wide" and "Ultrawide" modes for the Mac Virtual Display feature on the Vision Pro headset. MacRumors reports: Apple has previously said the ultra-wide version of Mac Virtual Display is equivalent to having two physical 4K displays sitting side by side on a desk. Mac Virtual Display is now available in three sizes: Normal, Wide, and Ultrawide. visionOS 2.2 will likely be released to the public in December alongside iOS 18.2, iPadOS 18.2, macOS Sequoia 15.2, watchOS 11.2, tvOS 18.2, and other updates. Further reading: Apple Delays Cut-price Vision Headset Until 2027, Analyst Ming-Chi Kuo Says Read more of this story at Slashdot.

According to The Verge, Netflix plans to delist almost all of its interactive shows and films as of December 1st. Only four of the 24 interactive titles will remain: Black Mirror: Bandersnatch, Unbreakable Kimmy Schmidt: Kimmy vs. the Reverend, Ranveer vs. Wild with Bear Grylls, and You vs. Wild. From the report: The removal of the titles marks a disappointing conclusion to Netflix's earliest efforts into interactive content. The company first launched the interactive titles in 2017 with Puss in Book: Trapped in an Epic Tale, and I remember being wowed (and horrified) by paths in Black Mirror: Bandersnatch. In addition to specials based on franchises like Carmen Sandiego and Boss Baby, Netflix also tried ideas like a daily trivia series and a trivia game you could play with a friend. But the relatively few titles available suggests the format wasn't much of a hit -- Puss in Book has apparently been gone for a while. "The technology served its purpose, but is now limiting as we focus on technological efforts in other areas," spokesperson Chrissy Kelleher says. Read more of this story at Slashdot.

Leading fintech and digital asset firms, including Robinhood, Kraken and Galaxy Digital, have introduced a joint stablecoin pegged to the U.S. dollar. Called the Global Dollar Network, it seeks to enhance the stablecoin market by lowering transaction costs, boosting consumer protections, and facilitating cross-border transactions with rewards for institutional participants. Crypto Briefing reports: The network will utilize Paxos's new stablecoin, the Global Dollar (USDG), which complies with the Monetary Authority of Singapore's upcoming stablecoin framework. USDG is designed to return yield on reserve assets to participants who contribute to its adoption, encouraging the development of crypto and financial solutions using the token. The Global Dollar Network aims to address shortcomings in the stablecoin market, such as high transaction costs and limited consumer protections. The network has opened an invite-only phase for select custodians, exchanges, payment processors, merchants, and banks to develop new solutions using USDG. Initial distribution is available on Anchorage Digital, Galaxy Digital, Kraken, and Paxos platforms, with plans to expand access through additional partners in the coming months. Read more of this story at Slashdot.

An anonymous reader quotes a report from TechCrunch: The CEO of AI search company Perplexity, Aravind Srinivas, has offered to cross picket lines and provide services to mitigate the effect of a strike by New York Times tech workers. The NYT Tech Guild announced its strike Monday, after setting November 4 as its deadline months earlier. The workers represented provide software support and data analysis for the Times, on the business side of the outlet. They have been asking for an annual 2.5% wage increase and to cement a current two days per week in-office expectation, among other things. [...] Picketers demonstrated in front of the NYT building in New York as negotiations continued. Meanwhile, on X, formerly known as Twitter, Perplexity's CEO offered to step in for the striking workers. Replying to Semafor media editor Max Tani quoting the publisher, Srinivas wrote: "Hey AG Sulzberger @nytimes sorry to see this. Perplexity is on standby to help ensure your essential coverage is available to all through the election. DM me anytime here." Many on X immediately castigated Srinivas for acting as a scab -- a derogatory term for people willing to perform the jobs of striking workers. It is widely considered a disreputable behavior in matters of labor and equity. By undercutting collective action, scabs limit the ability of workers to bargain with those in positions of power. Srinivas may simply be trying to make sure people have the information they need on election day. The company has lately unveiled its own elections info hub and map. But to offer its services explicitly as a replacement for striking workers was bound to be an unpopular move. Though TechCrunch asked Perplexity for comment, Srinivas responded to TechCrunch's post on X saying that "the offer was *not* to 'replace' journalists or engineers with AI but to provide technical infra support on a high-traffic day." The striking workers in question, however, are the ones who provide that service to the NYT. It's not really clear what services other than AI tools Perplexity could offer, or why they would not amount to replacing the workers in question. Read more of this story at Slashdot.

Amazon's Prime Video has introduced "X-Ray Recaps," a generative AI feature that will recap what you're watching. The new tool can create text summaries of "full seasons of TV shows, single episodes, and even pieces of episodes," the company says in a blog post. The Verge reports: X-Ray Recaps will be accessible from the detail page of a show or in X-Ray while you're watching something. The tool "analyzes various video segments, combined with subtitles or dialogue, to generate detailed descriptions of key events, places, times, and conversations," Amazon says. Amazon has also applied "guardrails" to help the feature avoid sharing spoilers and to keep summaries concise. X-Ray Recaps, which is are beta, are coming to Fire TV devices starting today, with support for "additional devices" available by the end of this year, Amazon says. The feature, at launch, will work with all Amazon MGM Studios Original series. Read more of this story at Slashdot.

Anton Shilov reports via Tom's Hardware: FFmpeg is an open-source video decoding project developed by volunteers who contribute to its codebase, fix bugs, and add new features. The project is led by a small group of core developers and maintainers who oversee its direction and ensure that contributions meet certain standards. They coordinate the project's development and release cycles, merging contributions from other developers. This group of developers tried to implement a handwritten AVX512 assembly code path, something that has rarely been done before, at least not in the video industry. The developers have created an optimized code path using the AVX-512 instruction set to accelerate specific functions within the FFmpeg multimedia processing library. By leveraging AVX-512, they were able to achieve significant performance improvements -- from three to 94 times faster -- compared to standard implementations. AVX-512 enables processing large chunks of data in parallel using 512-bit registers, which can handle up to 16 single-precision FLOPS or 8 double-precision FLOPS in one operation. This optimization is ideal for compute-heavy tasks in general, but in the case of video and image processing in particular. The benchmarking results show that the new handwritten AVX-512 code path performs considerably faster than other implementations, including baseline C code and lower SIMD instruction sets like AVX2 and SSSE3. In some cases, the revamped AVX-512 codepath achieves a speedup of nearly 94 times over the baseline, highlighting the efficiency of hand-optimized assembly code for AVX-512. Read more of this story at Slashdot.

An anonymous reader quotes a report from Ars Technica: On Friday, Perplexity launched an election information hub that relies on data from The Associated Press and Democracy Works to provide live updates and information about the 2024 US general election, which takes place on Tuesday, November 5. "Starting Tuesday, we'll be offering live updates on elections using data from The Associated Press so you can stay informed on presidential, senate, and house races at both a state and national level," Perplexity wrote in a blog post. The site will pull data from special data sources (called APIs) hosted by the two organizations. As of Monday, Perplexity's hub currently provides interactive information on voting requirements, poll times, and summaries about ballot measures, candidates, policy positions, and endorsements. Users can ask questions about the information similar to using a chatbot like ChatGPT. Perplexity's embrace of providing election information is an exception in the AI field. Wary about accidentally providing misinformation, competitor AI assistants from OpenAI, Google, and Anthropic currently direct users elsewhere or decline to answer election questions. OpenAI's ChatGPT Search directs election result queries to The Associated Press and Reuters. Perplexity describes its new elections hub as "an entry point for understanding key issues." But like other AI models, Perplexity can produce confabulations (plausible incorrect information) when generating responses. That could present an accuracy problem because the site's Voter Guide service uses AI language models to summarize and interpret information pulled from the web. Here's what Ars Technica advises: "Take what you see on Perplexity's site with a huge grain of salt -- do not rely on it without verifying the information with a trustworthy external source." Read more of this story at Slashdot.

An anonymous reader shares a report: With Windows 11 still failing to set the world alight, campaigners are warning that millions of perfectly good PCs could become landfill fodder when support for Windows 10 runs out in eleven and a bit months. Figures compiled by StatCounter show that Windows 11 commanded a 35.55 percent share of the desktop Windows market in October. In comparison, the share of Windows 10 dropped to 60.97 percent, continuing a downward trend that began earlier this year -- it was still at 69.9 percent in April. Unless there is some marked acceleration, Windows 11 is unlikely to dominate the market by the time Microsoft pulls the plug on free updates for most of the Windows 10 world on October 14, 2025. Read more of this story at Slashdot.