达芬奇的恶魔
分类: 谍影重重

A | One of the largest black hole jets in the sky has been uncovered by astronomers at Western Sydney University, new research published in the journal Monthly Notices of the Royal Astronomical Society has revealed.,According to the paper, in terms of distance from Earth, the galaxy NGC2663 is close by at just 93 million light-years.,With nearly ten times as many stars as our own Milky Way, it has the recognizable oval shape of a "typical" elliptical galaxy when viewed through a standard telescope. Led by astronomer Velibor Velovic of Western Sydney University, the research team used CSIRO's Australian Square Kilometre Array Pathfinder (ASKAP), a system of 36 connected radio dishes acting as a single super-telescope in Western Australia, to make their findings.,A core black hole's jet of material is visible in the radio waves as it leaves the galaxy. If our eyes could see it in the night sky, it would be larger than Earth's moon. This powerful torrent of material is approximately 50 times larger than the galaxy, stretched over almost 1 million light-years, according to the research.,The process studied by the scientists is rather similar to an effect seen in jet engines. The surrounding pressure pushes the exhaust plume from the sides as it rockets through the vacuum. As a result, the jet pulsates while expanding and contracting. Regular bright spots in the jet, called "shock diamonds" due to their shape, were observed by the team.,The flow glows brighter as it constricts.,Shock diamonds have been observed in smaller, galaxy-sized jets as well as in jet engines. Jets have been observed slamming into dense gas clouds, illuminating them as they pass through. However, a more subtle effect that makes it more difficult to see is the restriction of jets from the sides.,The paper underscored that astronomers have not observed this effect on such massive scales before NGC2663. This reportedly demonstrates that NGC2663 is surrounded by enough matter to push against the sides of the jet. The substance is then heated and pressurized by the jet.,A feedback loop is created when intergalactic matter enters a galaxy, which then creates a black hole that releases a jet. In turn, the jet decreases the inflow of intergalactic matter into galaxies. As the universe expands, these jets have an impact on how gas condenses into galaxies.,The Evolutionary Map of the Universe survey, which is also credited with discovering a new category of enigmatic astronomical object known as a "Odd Radio Circle," is still scanning the space.,‘Best Physical Models Can’t Fit The Data’: Radio Bursts Detected in Space ‘Defy’ Existing Theories7 August, 14:45 GMT。 The Chips Act is "a pre-cursor to further escalations with China in order to flip this dynamic, knowing that the US will not be able to adequately defend Taiwan,” US-based financial commentator Tom Luongo tells Sputnik, referring to US-Chinese tensions over Taipei, which escalated after House Speaker Nancy Pelosi’s visit to the island last week.,"The US will defend Taiwan through a number of hybrid war tactics, including sanctions and tariffs as well as monetary policy, while simultaneously making like they can and will defend Taiwan militarily. For now, Taiwan is important, this bill is saying we need to ensure it is less important. This vulnerability, in my opinion, was deliberately pursued by forces within our government to lead us to this unfolding crisis. We always wanted a casus belli against China. Taiwan is the perfect trip wire for further war," Luongo explains.,He ventured to say that “it may even have been the reason” Pelosi visited Taiwan “to ratchet up the tension and ensure the bill’s passage,” adding that “at this point, things are so murky, trying to divine what anyone’s motivations are on Capitol Hill, other than surviving the mid-terms, is a fool’s errand.”,Earlier this week, US President Joe Biden signed a bipartisan bill that aims to boost the country’s competitiveness with China by investing $280 billion in domestic semiconductor manufacturing and science research.,Speaking at the signing ceremony outside the White House on Tuesday, Biden claimed that “the future of the chip industry is going to be made in America,” adding, “Today is a day for builders. Today America is delivering.”,Dubbed the Chips and Science Act, the bill includes more than $52 billion for US companies producing computer chips, as well as billions more in tax credits to encourage investment in semiconductor manufacturing.,WorldUS New Chips Law Will Undermine Global Supply Chains: Chinese Foreign MinistryYesterday, 12:00 GMT,The document also stipulates allocating tens of billions of dollars to fund scientific research and development and to spur the innovation and development of other US technology.,"Trade tensions with China and the war hysteria [around] Taiwan will make US susceptible to disruptions in chip availability that can have wide ranging disturbances across industries," says Dr. Sunita Raju, a professor of economics and Chairperson of the Indian Institute of Foreign Trade. "While the CHIPS Act is an effort to maintain technology leadership position of US, it is also an effort to stem the US lagging behind Taiwan, Korea and China in recent times in chip manufacturing.",The Chips Act is "a clear departure for US industrial policy to provide subsidies and incentives to a specific industry. The compulsion now is driven by geopolitical tensions (US-China trade war, China-Taiwan-US confrontation), strategic significance of chips in manufacturing across industries (particularly post COVID) and its applications for defence and national security concerns," says Dr. Raju.,The professor explains that the purpose is to attact investment from major chip manufacturers and establish semiconductor fabrication plants in the United States.,"The 'Fab less' model that the US followed in the past made US gain a dominant market position in the R&D, IP and design capability of the value chain of semiconductor industry but resulted in less than 12% in wafer fabrication (capital intensive) and 2% in Assembling, Packaging &Testing (Capital & labour intensive) (SIA, 2021). US share in global installed capacity of semiconductor industry is less than 12%, while the global sale of semiconductor sales (Fab less plus IDMs) is 48%. As a result, growth in installed capacity of US was outpaced by Asian countries," Dr. Raju explains.,Modi Vows to Develop India as Chip Hub as Gov't Sets $300Bn Target in Electronics Manufacturing 4 July, 20:01 GMT,Meanwhile, Luongo says that the bill “will have an effect on semiconductor production” in the US, but “the question is whether it is cost-effective to actually do it.”,“It was a strategic mistake to offshore all of our chip production. For everything outside of the bleeding edge in power management – phones, data centers, etc. – older technology is just fine. Remember that most of these big chips are designed here in the US, manufacturing happens overseas. […] The production of most of your iPhone happens here in the US, the assembly of the parts happens in China. This point is lost in all of the noise,” he points out.,Luongo describes the bill as “just a start” in terms of the US’ effort to get the better of China in the race to dominate the high-tech sector.,“The turnaround will take time certainly, there is no easy fix here (…) If the US is serious about gaining real market share and competitiveness in manufacturing, then a lot of roadblocks currently in place will need to end,” the commentator notes.,He went on to argue that the global market for chips currently looks “the way it does because of US technology barriers through trade deals, sanctions and the like.” Luongo adds that US foreign policy “will now hinge on continuing to try and delay and slow down the rise of competition” and that “being pushed out of markets like central Asia and falling behind in Africa, etc. isn’t a good sign.”,According to him, “the real problem now is that the US is going hyper-belligerent to maintain its control when it should have looked inward to solve its internal problems years ago. [Former US President Donald] Trump tried and failed to make meaningful reforms.”。
Current article:http://g7h.cesangrangshunzashuangruijiu.pics/tyxopl/5z0o8t.html
Published on:04:26:01