MAROKO133 Eksklusif ai: Astronomers Spot Something "Totally Unexpected" at Event

📌 MAROKO133 Hot ai: Astronomers Spot Something "Totally Unexpected" at E

A supermassive black hole lurking at the center of M87, a supergiant galaxy 55 million light-years from Earth, is acting far more strangely than anticipated.

Since 2017, astronomers from the Event Horizon Telescope (EHT) — an international collaboration combining a global network of radio telescopes — have closely watched the enormous gaping maw, resulting in the first-ever images of a black hole ever captured by humankind.

Now, by comparing observations from 2017, 2018, and 2021, scientists made a surprising discovery about how the magnetic fields near the black hole, dubbed M87*, change over time.

As detailed in a new paper published in the journal Astronomy & Astrophysics, an international team of astronomers discovered that the black hole’s polarization flipped between 2017 and 2021, raising the possibility of a complex internal magnetic structure near its event horizon, the boundary in space beyond which nothing, even including light, can escape.

The findings suggest that magnetic fields play a significant role in how matter gets sucked up into the black hole and how energy gets spat back out, while also highlighting how much there’s still to learn about these cosmic monstrosities.

“What’s remarkable is that while the ring size has remained consistent over the years — confirming the black hole’s shadow predicted by Einstein’s theory — the polarization pattern changes significantly,” said coauthor and Harvard astronomer Paul Tiede in a statement. “This tells us that the magnetized plasma swirling near the event horizon is far from static; it’s dynamic and complex, pushing our theoretical models to the limit.”

Thanks to many improvements and instrument upgrades to the EHT project, scientists now have a smorgasbord of new data to examine that “will certainly keep us busy for many more years,” co-lead and Radboud University Nijmegen assistant professor Michael Janssen added.

According to the analysis, M87*’s polarization pattern flipped between 2017 and 2021, which “was totally unexpected,” as coauthor and Kyunghee University astronomer Jongho Park put it in the statement.

The finding “challenges our models and shows there’s much we still don’t understand near the event horizon,” he added.

Thanks to several new telescopes that were added to the EHT’s global network in 2021, the team was able to examine the spiraling, jet-like beams of energetic particles leaving M87* at almost the speed of light.

This enhanced sensitivity allowed them to detect “subtle polarization signals,” as coauthor and Max Planck Institute for Radio Astronomy postdoctoral researcher Sebastiano von Fellenberg explained in the statement.

The scientific community is celebrating the latest findings as a major breakthrough in our understanding of black holes.

“These results show how the EHT is evolving into a fully fledged scientific observatory, capable not only of delivering unprecedented images, but of building a progressive and coherent understanding of black hole physics,” said University of Naples Federico II astronomy professor and EHT project scientist Mariafelicia De Laurentis.

“It is a concrete demonstration of the extraordinary scientific potential of this instrument,” she added.

More on EHT: Astronomers Were Watching a Black Hole When It Suddenly Exploded With Gamma Rays

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🔗 Sumber: futurism.com

📌 MAROKO133 Update ai: Fed Boss Concerned About AI's Effect on Job Market Har

One of the key questions swirling around economics circles is the effect artificial intelligence will have — or perhaps is already having — on the job market.

While most tales of “AI automation” are anecdotal at best, preliminary data appears to show at least some level of job market disruption for young workers in fields vulnerable to the current capabilities of AI software.

Whether or not AI is actually taking those jobs is another question. Real-world performance of the software remains dreadful, leading to a number of automation disasters — in fact, data shows that AI rollouts is now plummeting across major companies. There’s also ample reason to believe that businesses executives are using AI as cover for otherwise typical outsourcing and downsizing strategies.

In short, AI automation is a huge grey area caught between hyped up tech PR on the one hand and an objectively dismal job market on the other.

Muddying the waters even further is US Federal Reserve chair Jerome Powell, who said at the conclusion of the Fed’s September meeting that he believes AI is effecting the labor force — at least to some degree.

“I think my view, which is also a bit of a guess, but widely shared, I think, is that you are seeing some effects but it’s not the main thing driving it,” he said, with a dizzying number of qualifiers.

First reported by Business Insider, Powell said his take is that AI is making the job market more challenging for recent college grads, though he was wishy-washy on how significant its impact really is.

“It may be that companies or other institutions that have been hiring younger people right out of college are able to use AI more than they had in the past,” the Fed chair said. “That may be part of the story. It’s also part of the story, though, that job creation more broadly has slowed down.”

Whether that’s true or not, the fact that Powell believes it is significant — he’s now among the most prominent US officials to comment on the question of AI automation, as BI observed.

For months, the central banking authority has faced a major contradiction in balancing the need to cut lending rates with the need to keep inflation from spiraling out of control. It’s a situation which could lead to a dreaded “stagflation” crisis, which would arguably be far worse for workers than AI currently is.

The Fed finally issued a small rate cut just days ago after a tumultuous summer, though the question remains whether more are to come, when they might arrive, and what effect Powell’s AI anxiety will have on those decisions.

As Powell himself put it following the September meeting, “it’s not incredibly obvious what to do.”

More on labor: Man Applies for Job, Sits for Interview, Then Realizes They’re Trying to Peddle “Mock Interviews With an AI Interviewer”

The post Fed Boss Concerned About AI's Effect on Job Market appeared first on Futurism.

🔗 Sumber: futurism.com