List of All Articles with Tag 'ce'

The new border force is designed to curb rising illegal immigration - a major political issue.

By Huw Jones LONDON The European Union, Britain and Switzerland have little choice but to copy Wall Street

By Dominique Vidalon PARIS (Reuters) -French supermarket group Casino has finalised a deal to avert bankruptcy through a debt restructuring

Workers will receive a 19% pay hike over five years under an agreement with Volvo Group-owned Mack Trucks

It’s been a big year for labor organizing in the U.S. And from auto production lines to Hollywood, all eyes are on strikes taking the world of work by storm

Earth has been hit by a blast from a dead star so energetic that scientists cannot explain it. The burst of gamma rays, originating in a dead star known as a pulsar, is the most high energy of its kind ever seen. It was equivalent about ten trillion times the energy of visible light, or 20 tera-electronvolts. Scientists are unable to explain exactly what kind of a scenario could lead a pulsar to emit such intense energy, and the researchers behind the breakthrough say that it “requires a rethinking of how these natural accelerators work”. Scientists hope that they can find yet more powerful energy blasts from pulsars, with a view to better understanding how they are formed. Pulsars are formed when a star dies, exploding in a supernova and leaving behind a tiny, dead star. They are just 20 kilometres across, and spin extremely fast with a powerful magnetic field. “These dead stars are almost entirely made up of neutrons and are incredibly dense: a teaspoon of their material has a mass of more than five billion tonnes, or about 900 times the mass of the Great Pyramid of Giza,” said Emma de Oña Wilhelmi, a scientist at the High Energy Stereoscopic System observatory in Namibia that detected the blast. As pulsars spin, they throw out beams of electromagnetic radiation, throwing it out like a cosmic lighthouse. That means that someone in one spot – like the Earth – will see the radiation pulses flash in a regular rhythm as they spin past. The radiation is thought to be the result of fast electrons that are produced and thrown out by the the pulsar’s magnetosphere, which is made up of plasma and electromagnetic fields that surround the star and spin with it. Scientists can search the radiation for different energy bands within the electromagnetic spectrum, helping them understand it. When scientists previously did that with the Vela pulsar examined in the new study, they found that it was the brightest everseen in the radio band, and the brightest persistent source in the giga-electronvolts. But the new research found that there is a part of the radiation with even more high energy components. “That is about 200 times more energetic than all radiation ever detected before from this object,” said co-author Christo Venter from the North-West University in South Africa. Scientists don’t know exactly how that could happen. 
“This result challenges our previous knowledge of pulsars and requires a rethinking of how these natural accelerators work,” says Arache Djannati-Atai from the Astroparticle & Cosmology (APC) laboratory in France, who led the research. “The traditional scheme according to which particles are accelerated along magnetic field lines within or slightly outside the magnetosphere cannot sufficiently explain our observations. “Perhaps we are witnessing the acceleration of particles through the so-called magnetic reconnection process beyond the light cylinder, which still somehow preserves the rotational pattern? But even this scenario faces difficulties to explain how such extreme radiation is produced.” An article describing the findings, ‘Discovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts’, is published today in the journal Nature Astronomy. Read More ‘Ring of fire’ solar eclipse this month will be last until 2046 Mystery behind massive star suddenly vanishing decoded New discovery is ‘holy grail’ breakthrough in search for aliens, scientist say ‘Ring of fire’ solar eclipse this month will be last until 2046 Mystery behind massive star suddenly vanishing decoded New discovery is ‘holy grail’ breakthrough in search for aliens, scientist say

Scientists have got to the bottom of a 5-year mystery after finally identifying a tiny sea creature captured on camera in 2018. It is the latest in a series of oceanic discoveries and experts recently observed “zombie worms” devour an alligator in an incredible experiment. For the tiny creature, the baffling question of its identity took a team of zoologists and parasitic worm specialists to solve after the small creature was pictured by an underwater photographer in 2018 off the coast of Okinawa in Japan. After photographer Ryo Minemizu captured the image, he shared it on social media asking the hive mind if they knew what the creature was, but everyone was left stumped. Minemizu was determined not to give up and instead went back to the area and was able to capture another ladybird-sized creature that was the same, or very similar, to the original one he had come across. The research team that was interested in identifying the sea creature approached him and Minemizu sent them the sample to research. Your browser does not support the video tag. Current Biology (2023) The team’s results were published in the Current Biology journal putting an end to the 5-year long mystery baffling experts. In a fascinating twist, the team found that the sample was not one, but two creatures that were clinging tightly to one another. Both were identified as types of cercariae parasitic larvae worms, with experts dubbing one as the “sailor” and the other as a “passenger” thanks to how they behave when they are connected. Passengers were much smaller than the sailors and when they were bonded together, they formed a flat-topped hemisphere shape. They squeeze their bodies together with heads facing the inside of the sphere, meanwhile, their tails latch onto one another. Experts believe the two individual creatures have created a colonial organism that suits both of their needs and according to the study's authors, “represents the first case of labor division in digenean larvae”. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

SAN FRANCISCO--(BUSINESS WIRE)--Oct 5, 2023--

Activists have accused Iran's morality police of assaulting a teenage girl for not wearing a headscarf in a Tehran metro station, leading to her hospitalization with serious injuries.

By Granth Vanaik (Reuters) -Conagra Brands on Thursday reported quarterly profit above Wall Street estimates, as prices hikes and easing

In late September, scientists at NASA and around the world eagerly awaited the arrival of the OSIRIS-REx capsule containing a sample of the asteroid Bennu. The capsule safely landed on Earth on Sunday 24 September in a Utah desert containing a sample of the asteroid Bennu – categorised as one of the two “most hazardous known asteroids”. When the capsule was first opened, it sparked audible gasps from scientists. Since its arrival, NASA has kept its cards fairly close to its chest but a new blog post from the space agency suggests that progress is going slowly for the “best reason” as there is more sample material than they had anticipated. They explained: “The abundance of material found when the science canister lid was removed earlier this week has meant that the process of disassembling the TAGSAM (Touch-and-Go Sample Acquisition Mechanism) head – which holds the bulk of material from the asteroid – is off to a methodical start.” The OSIRIS-REx’s mission took 7 years to complete, with the sample currently being analysed by NASA taken three years ago before making its way down to Earth. Imagery from the moment the sample was taken confirmed to scientists that there would be asteroid material where they found it, but the quantity of dark particles were far more than they had anticipated. “The very best ‘problem’ to have is that there is so much material, it’s taking longer than we expected to collect it,” said deputy OSIRIS-REx curation lead Christopher Snead of NASA’s Johnson Space Center. “There’s a lot of abundant material outside the TAGSAM head that’s interesting in its own right. It’s really spectacular to have all that material there.” In the coming weeks, experts will continue to work through the particles and begin the complex process of carefully disassembling the TAGSAM to reach the bulk of the Bennu sample inside. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

FT. LAUDERDALE, Fla.--(BUSINESS WIRE)--Oct 5, 2023--