Articles tagged with Universe
Researchers at Caltech propose a new approach to detecting dark matter using lighter-weight particles that can interact with magnons, excited electron spins. They suggest cooling equipment and moving it underground to detect these interactions.
A new study using international radio telescope data reveals galaxies are nearer than predicted, exacerbating a discrepancy in the Hubble Constant measurement. This finding bolsters the need to revise the standard cosmological model of the Universe.
Researchers have successfully recreated the process of creating matter from light using high-power lasers. The new method produces electron-positron pairs, mimicking conditions during the first minutes of the universe and providing an improved model for studying antimatter.
A study led by Arizona State University researchers found that classical novae are galactic producers of lithium. The team used simulations, observations, and laboratory studies to determine the role of these stellar explosions.
Researchers have found all of the missing 'normal' matter in the vast space between stars and galaxies, using fast radio bursts. The phenomenon allowed them to directly detect the missing matter, which is equivalent to only one or two atoms in a room the size of an average office.
The HHU physicists conducted a precision experiment to measure the electrical force between protons and deuterons using HD+ ions. They found no evidence of an interaction with dark matter, pushing down the upper limit of such interactions more than 20-fold.
Physicists led by Rene Bellwied aim to understand the role of 'dark' matter in the universe's evolution. The team will analyze data from international experiments STAR and ALICE to study the transition from quark-gluon plasma to existing particles.
A recent study used a 10-year galaxy survey to test one of cosmology's pillars and provided a new approach to understanding the universe's growth. The research team demonstrated that denser clumps grew faster, while less-dense clumps grew more slowly.
Scientists from UNSW Sydney report new measurements of light emitted from a quasar 13 billion light years away, reaffirming past studies on tiny variations in the fine structure constant. The findings suggest that one of nature's laws may not be constant, challenging the Grand Unifying Theory.
Researchers discovered the minimal value of viscosity, governed by the Planck constant and proton-to-electron mass ratio, using an equation that relates it to these physical constants. This finding has practical implications for developing new fluids with low viscosity.
The Hubble Space Telescope has unveiled a breathtaking portrait of a firestorm of starbirth in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. This iconic image, nicknamed the 'Cosmic Reef,' showcases the telescope's enduring legacy and transformative impact on modern astronomy.
Research by University of Sheffield physicists indicates a difference in neutrino and antineutrino behavior, which could help explain the universe's matter-matter asymmetry. The T2K experiment strengthens previous observations and paves the way for future discoveries.
A new study by the T2K Collaboration confirms that neutrinos and antineutrinos behave differently, which could explain why matter persists over antimatter in the universe. This result brings scientists closer to answering the fundamental question of why the universe is dominated by matter.
Researchers have found that neutrinos and antineutrinos behave differently, providing a possible explanation for the universe's dominant matter content. The T2K experiment detected subtle discrepancies in their oscillation rates, shedding light on physics' deepest mysteries.
The T2K experiment has shown that neutrinos oscillate more often than antineutrinos, pointing to almost maximum asymmetry between their behaviors. This finding offers a promising explanation for the disappearance of antimatter in the universe and may be confirmed by future experiments.
A Kanazawa University researcher proposes a novel cosmological model that extends the concept of black hole thermodynamics. The model satisfies the second law of thermodynamics on the horizon and suggests regions where cosmological models are favored from a thermodynamic viewpoint.
Researchers explore whether intuition on interaction is justified in quantum mechanics. They show that entangled states can be generated without direct contact using the fundamental indistinguishability of particles.
A recent study suggests that supermassive black holes could have formed in just 50-100 million years after the Big Bang, thanks to the rapid migration of stellar black holes. This theory reconciles the short time required for their growth with the age of the Universe.
A new paper suggests an 'axiogenesis' mechanism to explain the imbalance of matter and antimatter in the Universe. The proposed theory involves a rotation of the axion field, which could provide new research avenues for model building and studies of associated phenomenology.
Researchers have found the first direct correlation between dark matter and gamma rays in the universe. The study used gamma ray data from Fermi Large Area Telescope and mapped it with weak gravitational lensing, providing insights into the nature of dark matter and its potential connection to gamma ray emissions.
Researchers propose axion as solution to three mysteries: matter-antimatter asymmetry, dark matter, and the strong CP problem. The axion's rotation creates a tiny excess of matter over antimatter, explaining why we exist.
A UNIGE researcher has solved a scientific controversy about the speed of the universe's expansion by proposing that it may not be homogeneous on a large scale. This approach eliminates a divergence between two independent calculation methods, which previously yielded conflicting values for the Hubble constant.
A new study detects ultra-high-energy neutrinos using radar echoes, a potential breakthrough in studying these elusive particles. Researchers at Ohio State University created an experiment that uses radio waves to detect the cascades of charged particles left by neutrino collisions.
Scientists at the University of Sussex have measured a neutron property more precisely than ever before, finding it smaller than predicted by some theories about matter in the universe. This discovery helps rule out these theories and pushes the limit on measuring the electric dipole moment of the neutron.
Theoretical physicists calculate the birth of baby universes 46 times, showing a link between gravity and soliton. The study uses the JT gravity model to demonstrate the unification of quantum mechanics and gravity.
Emerging technologies are opening a new era in SETI research, with innovative approaches expanding beyond traditional radio signal searches. New systems will detect technosignatures, such as laser emissions or atmospheric chemicals, indicating the presence of extraterrestrial technologies.
A team of researchers discovered a massive galaxy dying 1.5 billion years after the Big Bang, with its core already fully formed at that time. This finding challenges previous measurements and adds to our understanding of the universe's formation.
Astronomers use NASA's Great Observatories to create a three-dimensional representation of the dynamic Crab Nebula, an exploding star. The visualization highlights the pulsar at the heart of the nebula and its intricate structures.
The IKBFU scientists proposed a new theory suggesting that the 'Dark Energy' is not a mysterious entity but rather a manifestation of the universe's boundaries. They draw an analogy with the Earth, where we experience attraction due to gravity but also have no physical boundaries.
A new image of the Milky Way's center captures a colorful composite of giant molecular clouds, with details on radio filaments and star factories. Scientists use GISMO data to observe microwaves at large scales, making detailed observations for the first time.
Researchers at Harvard University have achieved the coldest chemical reaction in history, slowing down molecules to capture the critical act of bond formation. By utilizing ultracold temperatures, they observed the intermediate stage of the reaction for microseconds, enabling direct measurement and validation of theories.
Researchers analyzed data from the Murchison Widefield Array radio telescope to set a new limit for the strength of neutral hydrogen's ultra-faint signature. The analysis may reveal critical information about the first stars and galaxies in the universe.
Scientists have detected gamma-rays from two gamma-ray bursts with ground-based telescopes, producing energies up to 100 billion times that of visible light. The observations provide insights into the gigantic explosions and their physical mechanisms.
Artyom Yurov's research suggests the Universe may have quantum properties due to decoherence theory. The phenomenon states objects exist in multiple places until interacting with their environment, causing 'collapse'. This theory challenges traditional understanding of large-scale quantum effects.
A new cosmological simulation, TNG50, has revealed that the geometry of cosmic gas flows determines galaxies' structures. The study finds that galaxies form into disc-like shapes with rapid rotation, eventually becoming spiral galaxies through a process known as galactic fountains.
The Hubble Space Telescope reveals a remote galaxy split into multiple images by gravitational lensing, allowing astronomers to study its structure and environment. The Sunburst Arc, 11 billion light-years away, resembles galaxies from an earlier time in the universe's history.
A study published in Nature Astronomy reveals thousands of new globular clusters have formed over the last billion years, primarily from a cool gas network surrounding giant galaxies. These clusters are thought to be the result of precipitation from hot gas and aging of stars.
A new measurement of the Hubble constant has been made using light from extremely distant galaxies, estimating a value of 76.8 kilometers per second per megaparsec. The result is comparable to previous estimates but differs significantly from other methods, sparking debate about potential new physics beyond our current understanding.
Researchers used supercomputer simulations to study magnetic reconnection, a process that releases kinetic energy in the universe. The simulations revealed a previously unknown role for the Biermann battery effect, which impacts magnetic reconnection in unexpected ways.
A German-British team used computer simulations to demonstrate how the merger of two stars creates strong magnetic fields. This process could result in the formation of magnetars, which are thought to have the strongest magnetic fields in the universe.
The EXO-200 collaboration has established some of the strongest limits yet for neutrinoless double beta decay and two-neutrino double beta decay of xenon-136. This research sets the stage for future experiments that will search for the hypothetical process, which would confirm that neutrinos are their own antiparticles.
Researchers used machine learning algorithms to analyze dark matter maps, achieving 30% more accurate results than traditional methods. The AI was trained on simulated data and applied to actual KiDS-450 dataset, showing promising potential for future cosmological applications.
A team at OIST Graduate University reports a new approach to quantum gravity using a model that more closely matches our reality, including accelerating expansion. The free S-matrix predicts interactions between particles in de Sitter space, which may help explain realistic scenarios.
New research by astrophysicists at the University of Kent reveals how matter discarded as stars die is recycled to form new stars and planets. The study found that elements such as carbon and oxygen are transferred through a process of fragmentation, providing vital clues about the emergence of life in our universe.
The KATRIN experiment has narrowed the estimated mass range of the elusive neutrino to 1 electron volt (eV), cutting it in half from a previous upper limit of 2 eV. This breakthrough allows scientists to answer fundamental questions about the universe's evolution and physics beyond the Standard Model.
Researchers have detected a 10-fold improvement in data gathered by the Murchison Widefield Array, bringing them closer to understanding the life and death of the earliest stars. The signal is more than 12 billion years old and was refined using new techniques to exclude sources of contamination.
Physicist Lucas Lombriser proposes a new mathematical manipulation of general relativity equations to harmonize theory and observation on the cosmological constant. Theoretical value is 0.704%, close to the best experimental estimate, resolving a 10121-year discrepancy.
The Harvard Museum of Natural History showcases an original lunar rock sample collected by Astronaut Alan L. Bean during the Apollo 12 mission, providing insights into the Moon's geology and formation. The exhibit highlights the importance of lunar samples in understanding the origins of our solar system.
A new method using red giant stars has measured the universe's expansion rate at 69.8 kilometers per second per megaparsec, settling between previous values of 74.0 km/s/Mpc and 67.4 km/s/Mpc. The result may indicate that the standard model of the universe is not yet complete.
A team of astronomers has discovered a pair of titanic supermassive black holes on a collision course, which will soon emit powerful gravitational waves dwarfing those from smaller black hole mergers. The discovery can aid in estimating the number of nearby supermassive black holes emitting detectable gravitational waves.
A new study has developed a method to measure the cosmic expansion with greater precision, utilizing galaxy voids and accounting for distortions caused by dark energy and curvature. The results agree with the simplest model of a flat universe and tighten constraints on alternative theories.
Researchers pin down Hubble constant value between 65.3 and 75.6 km/s/Mpc using gravitational wave signals and radio images. This method relies on a single merger event, which is remarkable given the cosmological models' limitations.
Astronomers have developed a new method to measure the expansion of the Universe by analyzing neutron star mergers and gravitational waves. This technique uses the orientation of the gravitational wave signal to determine the distance, providing a new 'cosmic ruler' for measuring the Hubble Constant.
Researchers at Durham University used supercomputer simulations to test Chameleon Theory, an alternative model for gravity. The findings suggest that galaxies like the Milky Way can form even with different laws of gravity, providing a new perspective on galaxy formation and dark energy.
A team of researchers has found a balance between hot gas, stars, and other materials in galaxy clusters. The study validates the prevailing cold dark matter theory and provides insight into the relationship between ordinary matter and dark matter.
A new AI model, D3M, generates complex 3D simulations of the universe in milliseconds, achieving accuracy comparable to high-accuracy models. The breakthrough enables researchers to explore various cosmic scenarios without sacrificing accuracy.
Cornell researchers develop algorithm to visualize models of the universe, unlocking secrets of cosmology and dark matter. The algorithm uses intensive principal component analysis to extract patterns from large datasets, providing new insights into the nature of our universe.
Scientists have detected the first polarized radio waves from a gamma ray burst jet, revealing that magnetic fields are more patchy and tangled than previously thought. The discovery was made possible by advanced radio telescopes and allows researchers to test theories about the structure of magnetic fields within jets.
An international team of astronomers has captured the first-ever polarized radio waves from a distant cosmic explosion, known as gamma-ray burst GRB 190114C. The discovery provides new insights into how jets are formed in gamma-ray bursts and could shed light on the role of magnetic fields in powering these energetic events.
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has enabled groundbreaking discoveries in pulsar and neutral hydrogen observations. With its ultra-wideband capabilities, FAST allows for the study of rotating radio transients in greater detail than ever before.