A Chinese team has developed a theoretical model for multiple solitary optical waves, also known as dark photovoltaic spatial solitons, which induce waveguides and can reconfigure optical beams by splitting them. The findings confirm previous research on the behavior of these solitons in photorefractive crystals.
Researchers used Chandra X-ray Observatory and other telescopes to map dark matter in galaxy cluster Abell 383. The study found a stretched-out, football-like shape of dark matter, with the point aligned close to the line of sight. The results challenge standard models and suggest further research is needed to resolve the discrepancy.
Astronomers have observed a clump of dark matter in the Abell 520 galaxy cluster, which contradicts current theories about its behavior. The team used the Hubble Space Telescope to map dark matter, revealing a core rich in dark matter but containing no luminous galaxies.
A University of Oklahoma graduate student has been awarded a national physics award for his groundbreaking research on dark matter. His thesis explores the mixture of two particles, axion and lightest supersymmetric (LSP) theory, providing a more intricate picture of dark matter.
The Kavli Institute aims to crack the puzzles of cosmological theory, including dark energy's repulsive gravity, dark matter's composition, and cosmic inflation's rapid expansion. New simulations and detectors will help scientists uncover new physics beyond current theories.
Researchers at Rice University have created a way to print fine lines of gold nanoparticles on glass, allowing them to transmit signals over long distances using dark plasmons. This breakthrough enables efficient energy transfer on the micrometer scale, potentially improving optoelectronic devices.
Researchers have used a three-dimensional color map of the universe to create the most accurate calculation yet of how matter clumps together. By analyzing the brightness of 900,000 galaxies, they found that dark energy accounts for 73% of the universe's density, providing new insights into the cosmos.
Researchers studied a galaxy cluster 5 billion light years away, finding that it has passed through each other without collision. The study revealed that most of the dark matter had also passed through, but gas clouds collided, creating a huge cloud of superheated gas.
Researchers have created the largest-scale map of dark matter, showcasing a intricate cosmic web that covers over one billion light years. By analyzing images of 10 million galaxies, they were able to detect the distortion caused by dark matter and gain insight into its distribution.
Researchers mapped dark matter using images of 10 million galaxies in four regions, studying distortion of light as it passes massive clumps of dark matter. The study reveals a vast network of dense and empty regions, providing the first direct glimpse at dark matter on large scales.
Scientists at Fermilab and Berkeley Lab have created the largest direct measurements of dark matter yet, using new methods that will improve ground-based surveys. The maps show a clearer picture of the universe's past, which is crucial for understanding dark energy.
Researchers confirm detection of antimatter positron excess with assistance from Earth's magnetic field, casting doubt on dark matter explanation. The Fermi Gamma-ray Telescope's unique approach utilizes the Earth's magnetic field to separate charged particles, providing valuable insight into the universe.
Researchers from Brown University report that dark matter must have a mass greater than 40 GeV to explain the universe's accelerated expansion. This limits potential weakly interacting massive particle (WIMP) candidates, which were previously suggested by other experiments.
A new study by University of Bristol researchers found that racehorses can adapt rapidly to changes in the daily light-dark cycle, leading to improved physical performance. The horses were able to run at full gallop for an additional 25 seconds before reaching fatigue after experiencing a shift in their 24-hour light-dark cycle.
Astronomers use Hubble's unprecedented precision to map dark matter in 25 massive galaxy clusters, challenging previous assumptions about its distribution. The survey's findings suggest that galaxy cluster assembly may have begun earlier than previously thought.
Researchers identified 3 million previously undetectable elements in non-coding regions of mammalian genomes that have been preserved across millions of years, associated with human disease. This catalog makes it easier to decipher the function of disease-related variation in the human genome.
The Bolshoi supercomputer simulation, based on WMAP5 parameters, provides a powerful new tool for studying galaxy formation, dark matter, and dark energy. Initial studies show good agreement between the simulation's predictions and astronomers' observations.
Researchers at Princeton University and NYU have developed a method to detect the collision of stars with primordial black holes, which are believed to be a source of dark matter. The new technique uses existing solar observation methods to identify subtle vibrations in a star's surface caused by a passing black hole.
Researchers at UC Irvine discovered that the Milky Way's spiral arms are a result of an intergalactic collision course with a dwarf galaxy named Sagittarius. The force of the impact sent stars streaming from both galaxies into long loops, which were then swelled and tugged outward by the Milky Way's rotation.
Researchers discovered a specific type of bacteria capturing carbon dioxide in the 'twilight zone' of the ocean, a region thought to be inhospitable for photosynthesis. The study provides new insights into the dark ocean's carbon cycle and challenges previous assumptions about the role of Archaea.
A team of researchers from the University of Valladolid analyzed 40 brands of beer and found that dark beer contains more free iron than pale and non-alcoholic beers. The average free iron content in dark beer was 121 ppb, while pale beer had an average of 92 ppb.
Researchers leverage supercomputers to investigate dark energy, a mysterious force driving the universe's expansion. They develop new models that allow for more accurate analysis of subtle dark matter clustering features, such as Baryon Acoustic Oscillations (BAO), crucial for constraining cosmological parameters.
Astrophysicists are using Type Ia supernovae, also known as 'zombie' stars, to build a map of the universe's history and understand dark energy. The stars' explosive deaths can be used to measure distances in the universe.
Researchers use gravitational lensing to map dark matter distribution in the cluster, while NASA's Chandra X-ray Observatory observes hot gas. The study reveals a complex collision that separated out hot gas and dark matter, separating them from visible galaxies.
The Hubble Space Telescope has captured the complex history of Pandora's Cluster, a giant galaxy cluster resulting from the simultaneous collision of four smaller clusters. The data reveal that dark matter dominates the cluster's mass, with gas making up only 5% of its total mass.
The CoGeNT experiment has detected a seasonal signal variation in its data, consistent with the predictions of Weakly Interacting Massive Particles (WIMPs). The team is cautious, as the signal could be due to random fluctuations or experimental errors.
The Gang of Four, including Davis, Efstathiou, Frenk and White, receives the prize for their pioneering use of numerical simulations to model the Universe's large-scale distribution. Their work, which began with a survey of 2400 galaxies in 1981, showed that observations were consistent with a simulated Universe based on cold dark matter.
The Giant Magellan Telescope will be built with seven 8.4-meter primary mirrors and is expected to begin science operations in northern Chile in 2019, allowing astronomers to study dark matter and dark energy. The telescope's resolving power will be larger than any other ever built, enabling groundbreaking discoveries about the universe.
A study found that Atlantic molly females from regular surface streams have difficulty reproducing in dark conditions and are more prone to stress-induced bacterial columnaris disease. The research suggests that permanent darkness severely hampers reproduction in these fish, highlighting the importance of light for their survival.
The XENON collaboration has announced results from a 100-day experiment, revealing no evidence of Weakly Interacting Massive Particles (WIMPs), leading candidates for dark matter. The high sensitivity achieved by the XENON100 detector may allow future detection in the near future.
Scientists at Queen's University have won a £2 million grant from the Science and Technology Facilities Council (STFC) to study dark matter, dark energy, and the Sun. The funding will support international collaborations with top universities, including Harvard and Vanderbilt.
Scientists led by Syracuse University physicist Sheldon Stone observed the decay of a rare B meson particle, which may hold clues about the universe's matter-antimatter imbalance and the nature of fundamental forces. The discovery is part of ongoing efforts to understand why the universe evolved with more matter than antimatter.
Astronomer Heidi Newberg is using a new $382,000 NSF grant to map the distribution of dark matter in our galaxy. She will utilize the massive computing power of the international MilkyWay@Home project to simulate how stars in stellar streams got to their current positions.
Astronomers using NASA's Hubble Space Telescope have recalculated the universe's expansion rate with unprecedented accuracy, ruling out an alternate theory on dark energy. The new measurement reduces uncertainty by 30% and solidifies understanding of cosmic ingredients.
Astronomers find that galaxies in this 'sweet spot' mass range can form stars at high rates and grow rapidly. This discovery challenges current models of galaxy formation, suggesting a reduced need for dark matter to trigger starbursts. The research uses infrared images from Herschel's SPIRE instrument.
The Large Hadron Collider's CMS detector has conducted the first full run of experiments, producing energies similar to those present in the Universe's first instants. Researchers are optimistic about confirming or ruling out Supersymmetry as a solution for dark matter, which makes up approximately 25% of the universe's mass.
A new study led by Ryan Foley has found a way to correct for small variations in the appearance of Type Ia supernovae, making them better standard candles. This discovery allows cosmologists to improve their data analysis and make more accurate measurements of dark energy.
Researchers develop method to locate satellite galaxies based on hydrogen gas distribution, predicting Galaxy X's mass and location. The technique has broad implications for dark matter detection and alternative gravity theories.
Nine dark energy models have been tested and compared using the latest observational data, including type Ia supernovae, baryon acoustic oscillation, and cosmic microwave background. The cosmological constant (CC) model is found to be the best fit, with five other models providing a good fit to the current data.
Researchers found that low mass dark matter particles can interact with the Sun's atoms, transferring energy from the core to the external parts. This interaction cools down the Sun's core and reduces the flux of solar neutrinos.
Researchers have successfully trapped and studied anti-hydrogen atoms using the ALPHA experiment. The findings shed light on the structure and composition of anti-matter, a key to understanding why matter dominates the Universe.
Researchers found that mice exposed to dim light at night gained about 50% more body mass than those in a standard light-dark cycle. The study suggests that timing of eating is critical to weight gain and may be contributing to the obesity epidemic in Western countries.
Penn researchers found retinal ganglion cells responding to darkness are more numerous and clustered than those seeing light, reflecting the natural world's darker spots. This suggests brain separation of retinal circuitry into off and on mosaics, allowing for structural adaptation to natural scenes.
Researchers suggest that detecting neutrinos and gravity waves can independently confirm the presence of dark matter in the sun. Current detectors, such as Borexino and SNO, will be able to measure the sun's core temperature with precision.
Researchers at UC San Diego developed a new chip prototype called GreenDroid, which uses dark silicon to improve performance through specialized processors. The prototype delivers improved efficiency by running heavily used code in Google's Android platform, resulting in up to 7.5 times increased efficiency compared to aggressive mobil...
Researchers use gravitational lensing in galaxy cluster Abell 1689 to study the properties of dark energy. The distortion induced by lensing allows them to reconstruct light paths and understand its effect on space geometry.
Using gravitational lensing, researchers probe elusive dark energy for the first time, improving current measurements of mass and energy content. The results narrow the range of estimates about dark energy's effect on the universe by 30 percent.
Scientists are deploying a 4-kilogram bubble chamber at SNOLab, Ontario, Canada to detect dark matter particles. The team hopes to establish evidence for dark matter using Weakly Interacting Massive Particles (WIMPS) and axions.
Radio astronomers have developed a new technique for studying dark energy by mapping large-scale cosmic structures. This method, called intensity mapping, allows them to accumulate radio waves emitted by hydrogen gas in vast volumes of space, revealing insights into the nature of dark energy and its impact on the Universe's evolution.
Astronomers have detected a wave of massive star formation within the M17 SWex dark cloud, revealing 488 newly forming stars, including 200 blue-white class B stars. The discovery sheds light on how and when massive stars form, with theories suggesting an expanding shock wave or later formation may be necessary.
A University of Kentucky study found changes in white matter connections in high-risk Alzheimer's patients before symptoms manifest. The research used MRI to assess microstructural integrity of axons and myelin in the brains of high- and low-risk groups.
New results from a galaxy survey set the smallest upper limit on the size of the elusive neutrino particle to date at 0.28 electron volts. The research uses a large 3D map of galaxies and cosmic microwave background radiation, providing insights into dark matter.
Researchers at NIST and JILA developed a new type of pulsed laser that excels at not producing light, generating sustained streams of dark pulses. These ultrashort pulses are suitable for measurements on short timescales and may be useful in signal processing.
Researchers discover that most of the genomic output from dark matter transcripts is associated with existing genes. Only a small percentage of these transcripts remain unexplained and appear to be background noise.
A new research study is exploring the effects of dark chocolate on cardiovascular health in people with high blood pressure. Participants will be given 50g of dark chocolate daily for eight weeks to examine its impact on blood vessel health and the risk of developing heart disease.
Researchers at Johns Hopkins have discovered that a compound in dark chocolate may protect the brain after a stroke by increasing cellular signals. The study found that mice who ingested epicatechin suffered significantly less brain damage than those who did not.
A recent study by UCI astrophysicists refines predictions for the detection of dark matter, suggesting that current models cannot account for excess high-energy positrons. The research leaves room for future experiments to potentially detect dark-matter evidence in the near future.
Researchers found that dark chocolate reduced damage to blood vessels in cirrhotic patients and lowered blood pressure. In contrast, white chocolate had no beneficial effects on portal hypertension.
Researchers have taken the first close-up pictures of Epsilon Aurigae's mysterious dark companion, revealing a geometrically thin, dark, dense, but partially translucent cloud. The images show that the basic paradigm was right despite slim probability, and provide new insights into the system's shape and surface characteristics.
A CU-Boulder team has made history by smashing subatomic particles together at unprecedented energies, with a combined collision energy of 7 trillion electron volts. The experiment is aimed at uncovering secrets about dark matter, dark energy, gravity, and the fundamental laws of physics.