Astronomers have spotted a galaxy that stopped forming new stars over 13 billion years ago, when the universe was just 700 million years old. The 'dead' galaxy experienced a short and intense period of star formation, followed by rapid quenching.
The James Webb Space Telescope has discovered a 2-million-solar-mass supermassive black hole at the center of the galaxy GN-z11, which is one of the youngest and most distant galaxies ever observed. The team also found evidence of ionized chemical elements and a powerful wind expelled by the galaxy.
The new CLASS maps provide further insight into linear polarization, helping scientists study the Milky Way but also studying the early universe. The results significantly improve observations, allowing for a better understanding of the cosmic microwave background and its implications on the universe's origins.
A team of researchers has observed bubble formation through false vacuum decay in atomic systems, shedding light on this long-theorized phenomenon. The study confirms the quantum field origin of the decay and its thermal activation, opening up new avenues for understanding early universe and ferromagnetic quantum phase transitions.
Researchers discovered a massive black hole at the center of galaxy GN-z11, which dates back 13 billion years and challenges traditional theories on black hole formation. The ancient black hole is 'eating' its host galaxy, suggesting alternative formation mechanisms.
The Dark Energy Survey has released unprecedented results on the mysteries of dark energy and the expansion of the universe. The study placed the strongest constraints on the expansion rate of the universe ever obtained, consistent with the standard cosmological model but not definitive enough to rule out a more complex model.
The PRIYA simulation suite provides a new model for simulating large-scale structure in the universe, constraining cosmological parameters and dark matter. The study confirms the σ8 tension between CMB measurements and weak lensing, with implications for understanding the universe's evolution billions of years after the Big Bang.
Researchers from Universities of Bonn and St. Andrews propose an alternative theory of gravity as the cause of the discrepancy in measured values of the Hubble-Lemaitre constant. This 'modified Newtonian dynamics' (MOND) theory predicts the existence of regions with lower matter density, which would explain the observed deviations.
Researchers Till Sawala and Peter Johansson propose that frequent interactions and mergers within the Supergalactic Plane lead to elliptical galaxies, while isolation outside the plane preserves spiral structure. The team's simulation is consistent with observations, supporting the standard model of dark matter.
New study finds that neglecting gravitational lensing in CMB polarization analysis leads to statistically rejected theories and biased model parameters. Researchers develop tool for correcting gravitational lensing effects, paving way for future missions to reveal nature of dark matter and dark energy.
Researchers have carried out the largest ever computer simulations to investigate the Universe's evolution, taking into account ordinary matter and dark energy. The FLAMINGO simulations provide a detailed picture of virtual galaxies and galaxy clusters, allowing for comparisons with observations from new high-powered telescopes.
Researchers propose that black holes can exist in equilibrium as 'perfect pairs' within an ever-expanding Universe. This concept challenges traditional understanding of black hole behavior and interactions.
The discovery of FRB 20220610A confirms that fast radio bursts can be used to measure the 'missing' matter between galaxies, providing a new way to weigh the Universe. The burst is also one of the most energetic ever observed, releasing energy equivalent to our Sun's total emission over 30 years.
A Northwestern University-led team of astrophysicists has discovered that young galaxies appear brighter than anticipated due to irregular bursts of star formation. This finding explains the puzzling appearance of massive galaxies too soon after the Big Bang, fitting within the standard model of cosmology.
A new method using colliding neutron stars may help resolve the discrepancy in measuring the universe's expansion rate. By analyzing the symmetry of kilonovae, astronomers can calculate distances to galaxies more accurately than current methods.
Researchers used supercomputer simulations to model possible collisions between precursor icy moons and discovered that an impact could scatter the right amount of ice into Saturn's Roche limit, forming its iconic rings. The study suggests a massive collision occurred around 200 million years ago, creating the remarkably young and almo...
A new study reveals that a massive galaxy cluster collision at half the Universe's current age is inconsistent with the standard Lambda-cold dark matter (ΛCDM) model. The El Gordo cluster, with a mass 2000 trillion times that of the Sun, challenges the theory's predictions for structure formation and galaxy evolution.
University of Michigan researchers found that large cosmic structures grow at a rate slower than expected, with dark energy accelerating the universe's expansion having an opposite effect on structure growth. This discovery challenges the standard model and addresses the S8 tension in cosmology.
Researchers propose using gravitational wave searches to detect dark matter through neutron star effects. The study forecasts constraints on heavy dark matter particles within the next decade, offering a potential tool for testing dark matter theories.
Researchers at Ohio State University have developed a new framework for studying neutrino self-interactions using supernovae. They found that in the burst case, unprecedented sensitivity to neutrino self-interactions is possible even with sparse data from SN 1987A and conservative analysis assumptions.
Researchers develop new algorithm to effectively investigate long-range interacting systems, reducing runtime from quadratic to linear with system size. The new method opens up new questions and applications in nonequilibrium processes, including phase separation and structure formation in cosmology and solid state physics.
The galaxy NGC 1277, a massive relic galaxy, has been found to lack dark matter, contradicting current cosmological models. The team used integral field spectrograph observations to determine the mass distribution within the galaxy, revealing that it is solely composed of stars.
A new study by uOttawa researchers proposes a revised cosmological model that stretches galaxy formation time, making the universe 26.7 billion years old. This finding addresses the 'impossible early galaxy problem' and provides a more feasible explanation for the advanced level of development observed in ancient galaxies.
Researchers propose using lensed gravitational waves from binary black holes to measure cosmic expansion. The method uses the delays between repeat appearances of these signals to encode the universe's expansion rate. This approach does not rely on knowing the exact locations or distances of binary black holes, making it a promising to...
Researchers from West Virginia University have made a groundbreaking discovery by detecting evidence of low-frequency gravitational waves, which can only be perceived with a detector much larger than the Earth. The signal was detected using pulsar timing arrays and has significant implications for understanding spacetime dynamics.
Researchers at the University of Toronto have made a breakthrough in understanding dark matter and its impact on the universe's large-scale structure. By analyzing cosmic microwave background data and galaxy clustering patterns, they suggest that ultra-light axion particles could account for the observed lack of clumpiness.
University of Florida astronomers discovered parity symmetry violation, a broken symmetry that explains why there's more matter than antimatter. This finding confirms the Big Bang theory and addresses the question of why something exists instead of nothing.
The James Webb Space Telescope has observed six galaxies that defy the standard model of cosmology, with masses billions of times that of our sun. These findings suggest alternative theories on galaxy formation and expansion rates shortly after the Big Bang.
Researchers from the Atacama Cosmology Telescope collaboration have created a groundbreaking new image that reveals the most detailed map of dark matter distributed across a quarter of the entire sky. The study confirms Einstein's theory of how massive structures grow and bend light, supporting the standard model of cosmology.
Researchers found consistent results between observations and theory, showing that clusters have become more centrally concentrated over time. The study provides strong support for the Lambda-CDM paradigm by demonstrating agreement between the observed and simulated concentration-mass relation of galaxy clusters.
The Energy Circulation Theory (ECT) simulates the formation of galaxies with different shapes, such as disc, spiral, and elliptical ones. The study demonstrates that various galactic distributions result from stellar seed releases and galactic seed interactions.
Physicists from Tata Institute of Fundamental Research and The Institute of Mathematical Science have predicted the existence of a deeply bound dibaryon made of two triply bottom Omega baryons. This finding elucidates strong forces in baryon-baryon interactions, potentially explaining nuclear bindings.
Princeton Chemist Salvatore Torquato and astrophysicist Oliver Philcox applied statistical mechanics to find similarities in galaxy distribution across length scales. They used new descriptors to characterize structural data, revealing a correlated disorder in the spatial relationships between galaxies.
Researchers studied a Type 1a supernova in a faraway spiral galaxy, NGC 1566, to understand how certain chemical elements are emitted into the surrounding cosmos. The study confirms that ejecta doesn't escape the confines of the explosion, validating many assumptions about how complex entities work.
A mysterious, extremely remote celestial body has been identified as a young, compact galaxy forming stars at an incredibly high rate of 1000 times the Milky Way's. Its features were finally described by a team from SISSA using ALMA interferometer technology.
Researchers Martin S. Sloth and Florian Niedermann introduce New Early Dark Energy (NEDE) as a solution to the Hubble tension problem, suggesting a phase transition in dark energy that explains different measurement results for the universe's expansion rate.
The Hydrogen Epoch of Reionization Array (HERA) team has doubled the sensitivity of its radio telescope array, providing clues to the composition of stars and galaxies in the early universe. The data suggest that early galaxies contained few elements besides hydrogen and helium.
Researchers used new data from the European Space Agency's GAIA space observatory to project the orbits of satellite galaxies into the past and future, revealing the plane form and dissolve in a few hundred million years. The findings remove one of the main objections to the validity of the standard model of cosmology.
Scientists use ensemble-NV-diamond magnetometers to search for new particles and establish experimental constraints on exotic interactions at the micron scale. The discovery has significant implications for cosmology, astrophysics, and particle physics.
A team of cosmologists has reconstructed gravity to find a more robust way of understanding the cosmos, using new observational data from space and ground-based telescopes. The study explores whether modifying General Relativity could help resolve open problems in cosmology, with promising results that could pave the way for resolving ...
Astrophysicists have identified a potential test to rule out cosmic inflation, a theory explaining the universe's origins. The cosmic graviton background (CGB) could provide evidence against inflation if detected, and its impact on the early Universe's expansion rate could be measured by next-generation probes.
The Pantheon+ analysis reveals that the universe is composed of about two-thirds dark energy and one-third matter, mostly in the form of dark matter. This finding strengthens the Standard Model of Cosmology, but also highlights an unresolved disagreement over the pace of expansion.
Steve Petruzza has been awarded a $600,000 NSF grant to develop tools and techniques for next-generation adaptive data layouts. This will address the increasing gap between computing power and data movement, enabling efficient access to large datasets.
Researchers have created and observed novel vortices in an ultracold gas, exhibiting unexpected properties due to hidden discrete symmetries. The discovery may lead to breakthroughs in quantum computing and information processing.
A new study by University at Buffalo physicists Will Kinney and Nina Stein reveals that the latest cyclic model introduces a new problem: the universe must have a beginning. This finding contradicts previous theories, which aimed to address entropy concerns by proposing endless cycles of expansion and contraction.
Researchers used microwaves from the cosmic microwave background to measure dark matter distribution around distant galaxies. The findings suggest a different clumpiness measurement than predicted by the Lambda-CDM model, hinting at a possible flaw in the current cosmology theories.
A team of astronomers has developed a novel way to observe the first stars and galaxies, detecting light through the fog of the early Universe. The Square Kilometre Array will likely make images of the earliest light, but current telescopes struggle to detect the cosmological signal through hydrogen clouds.
A new study from the University of Portsmouth discovers that information entropy decreases over time, unlike the second law of thermodynamics. This finding has massive implications for future developments in genome research, evolutionary biology, and computing.
Scientists have discovered a new, extremely faint galaxy named Pegasus V, located on the outskirts of Andromeda. The dwarf galaxy is believed to be one of the oldest in the universe, with its stars forming over 13 billion years ago.
Researchers discovered FRB 190520 shows unusual characteristics compared to other FRBs, with a persistent radio source associated with it. The location of the burst was pinpointed using redshift and dispersion measure calculations, pointing towards a dwarf galaxy at a distance of ~0.2.
A new study by the POLARBEAR collaboration provides a new correction algorithm that allows for almost double the amount of reliable data on Cosmological Gravitational Waves (CGWs), produced during Inflation in the early Universe. This enhances our understanding of the signal and brings us closer to observing CGWs.
A team of researchers created simulations that directly recreate the full life cycle of massive galaxy protoclusters 11 billion years ago. They were able to identify five new structures and disfavor one, providing insights into the standard model of cosmology.
Researchers discovered a previously unnoticed mathematical property that could allow for a faster expansion rate while preserving other predictions. This finding suggests the existence of a 'mirror world' with similar but invisible particles interacting only through gravity.
Researchers used computer modeling to simulate the long-term evolution of a hypothesized type of supernova, known as D6. The study found that remnants of type Ia explosions are not necessarily symmetric, offering new insights into supernova physics. This finding has significant implications for using Ia supernovae as cosmic yardsticks.
Astronomers at Stanford University propose a new method to manipulate solar gravitational lensing to create advanced imaging capabilities for detecting and studying exoplanets. The technique, developed by Alexander Madurowicz, uses the sun's gravity as a natural telescope to capture fine details on planet surfaces.
Roman will explore cosmic acceleration using multiple methods, including spectroscopy and imaging surveys. The mission aims to create a 3D map of the universe by measuring accurate distances and positions of millions of galaxies.
Physicists have narrowed the axion mass range to 40-180 micro-eV using advanced simulations and supercomputer power. This new estimate suggests that the most common type of experiment to detect axions won't be able to detect them, regardless of tuning.
Recent research uses gravitational waves to assess what fraction of dark matter could be in the form of massive primordial black holes. The study sets an upper limit of less than half for such heavy black holes within a mass range of 100 to 100,000 solar masses.
The KATRIN experiment has constrained the mass of neutrinos to a new upper limit of 0.8 eV, breaking into the sub-eV mass range relevant to cosmology and particle physics. This achievement demonstrates unprecedented precision in determining the mass of neutrinos.
The KATRIN experiment has achieved a new upper limit on neutrino mass of 0.8 eV, entering the cosmologically and particle-physically important sub-eV mass range. This is the first time that a direct neutrino mass experiment has reached this sensitivity.