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Archive for the ‘cosmology’ category: Page 39

Jul 6, 2024

Matter/Antimatter Black Hole Jets Recreated in CERN’s Laboratory

Posted by in category: cosmology

The Fireball collaboration at CERN has generated a powerful electron-positron plasma beam to study black hole jets, significantly advancing our understanding of these cosmic phenomena and supporting simulations with experimental data. Credit: SciTechDaily.com.

The Fireball collaboration used CERN ’s HiRadMat facility to produce an analog of the jets of matter and antimatter that stream out of some black holes and neutron stars.

At CERN’s HiRadMat facility, researchers have created a high-density electron-positron plasma beam that mimics astrophysical jets from black holes, providing new insights into space phenomena. These experiments help validate theoretical models with real-world data, paving the way for deeper understanding of cosmic events like black hole jets.

Jul 6, 2024

Wormholes and quantum entanglement | Juan Maldacena

Posted by in categories: cosmology, quantum physics

[2023 APCTP Spring Colloquium] Wormholes and quantum entanglement.

Date: 10 March, 2023
Speaker: Prof. Juan Maldacena.

Continue reading “Wormholes and quantum entanglement | Juan Maldacena” »

Jul 6, 2024

Scientists Built an Ingenious Trap to Catch Dark Matter. We’re About to See If It Worked

Posted by in category: cosmology

The bold experiment may finally uncover the elusive stuff that makes up 95 percent of the universe.

Jul 5, 2024

Webb admires bejeweled ring of the lensed quasar RX J1131-1231

Posted by in category: cosmology

This new picture of the month from the NASA/ESA/CSA James Webb Space Telescope features the gravitational lensing of the quasar known as RX J1131-1231, located roughly six billion light-years from Earth in the constellation Crater.

It is considered one of the best lensed quasars discovered to date, as the foreground galaxy smears the image of the background quasar into a bright arc and creates four images of the object.

Gravitational lensing, first predicted by Einstein, offers a rare opportunity to study regions close to the black hole in , by acting as a natural telescope and magnifying the light from these sources. All matter in the universe warps the space around itself, with larger masses producing a stronger effect.

Jul 4, 2024

Searching for dark matter with the coldest quantum detectors in the world

Posted by in categories: cosmology, particle physics, quantum physics

One of the greatest mysteries of science could be one step closer to being solved. Approximately 80% of the matter in the universe is dark, meaning that it cannot be seen. In fact, dark matter is passing through us constantly—possibly at a rate of trillions of particles per second.

We know it exists because we can see the effects of its gravity, but experiments to date have so far failed to detect it.

Taking advantage of the most advanced quantum technologies, scientists from Lancaster University, the University of Oxford, and Royal Holloway, University of London are building the most sensitive dark matter detectors to date.

Jul 4, 2024

Dogged Dark Matter Hunters Find New Hiding Places to Check

Posted by in categories: cosmology, particle physics

Perhaps dark matter is made of an entirely different kind of particle than the ones physicists have been searching for. New experiments are springing up to look for these ultra-lightweight phantoms.

Jul 4, 2024

Earth’s upper atmosphere could hold a missing piece of the universe, new study hints

Posted by in category: cosmology

Mysterious dark matter could slosh over our planet like a wave. If it does, it may produce telltale radio waves in Earth’s atmosphere, new theoretical research suggests.

Jul 3, 2024

Ultra-Precise Atomic Clock Doubles Previous Accuracy, Could Detect Dark Matter

Posted by in categories: cosmology, particle physics

Time: It bends and warps, or seems to speed up or slow down, depending on your position or perception. So measuring its passing accurately is one of the most fundamental tasks in physics – which could help land us on Mars or even observe dark matter.

Now, physicists at the US National Institute of Standards and Technology (NIST) and the University of Delaware have developed the most accurate and precise atomic clock yet, using a ‘web’ of light to trap and excite a diffuse cloud of cold strontium atoms.

“This clock is so precise that it can detect tiny effects predicted by theories such as general relativity, even at the microscopic scale,” says Jun Ye, a physicist at the NIST’s Joint Institute for Laboratory Astrophysics (JILA) lab at the University of Colorado. “It’s pushing the boundaries of what’s possible with timekeeping.”

Jul 3, 2024

New Experiment To “Trap” Dark Matter Could Unravel Mysteries of the Universe

Posted by in categories: cosmology, particle physics

Scientists have devised a 3D-printed vacuum system to detect dark matter and explore dark energy, using ultra-cold lithium atoms to identify domain walls and potentially explain the universe’s accelerating expansion.

Scientists have developed a novel 3D-printed vacuum system designed to ‘trap’ dark matter, aiming to detect domain walls. This advancement represents a significant step forward in deciphering the mysteries of the universe.

Scientists from the University of Nottingham’s School of Physics have created a 3D-printed vacuum system that they will use in a new experiment to reduce the density of gas, then and add in ultra-cold lithium atoms to try to detect dark walls. The research has been published in the scientific journal Physical Review D.

Jul 2, 2024

Black holes are common. So where are the white holes?

Posted by in category: cosmology

In General Relativity, white holes are just as mathematically plausible as black holes. Black holes are real; what about white holes?

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