Researchers using advanced methods have measured corotation radii in over 100 galaxies, finding that many bars are rotating slower than previously thought. The team's findings suggest that dark matter halos may not be necessary to explain the observed behavior of galaxy bars.
The H0LiCOW collaboration has made a new measurement of the Hubble constant using quasars and gravitational lensing. The result agrees with recent independent studies but disagrees significantly with cosmic microwave background measurements, potentially indicating new physics beyond the standard cosmological model.
The Hubble Constant measurement by the H0LiCOW collaboration hints at 'new physics' beyond the standard model of cosmology. The team used gravitational lenses to measure the universe's expansion rate, which is crucial for confirming or refuting the current picture of dark energy and dark matter.
A team of researchers led by David Cinabro found that Type Ia Supernovas can be used to measure the pace at which the universe expands. The study challenges recent headlines suggesting these explosions cannot be relied upon for this purpose.
Scientists measured the proportion of unstable particles in dark matter after the Big Bang, finding it was no more than 2-5%. This discrepancy can be explained by decaying dark matter hypothesis, suggesting dark matter decayed over time.
A spinning supermassive black hole destroyed a Sun-like star, causing the most luminous supernova ever recorded. The observation is attributed to a tidal disruption event rather than an extraordinary bright supernova.
Researchers used brightness and simultaneous detection to pinpoint FRB source, measuring galaxy's magnetic field for better cosmology models. The findings shed light on the origins of powerful radio flashes, offering insights into stellar evolution and the Universe's larger-scale structure.
A team of scientists found that the evidence for an accelerating expansion of the universe may be flimsier than previously thought, with data consistent with a constant rate of expansion. The study challenges the standard cosmological concept and suggests that dark energy, a mysterious substance driving this acceleration, may not exist.
The MINOS and Daya Bay experiments have published a paper that sheds new light on sterile neutrinos. The joint analysis excludes most possible sterile neutrino oscillation scenarios that could explain the LSND result, significantly shrinking the hiding space for a light sterile neutrino.
Researchers from the University of Cincinnati have joined forces with international efforts to search for a new type of neutrino that may shed light on dark matter. The MINOS and Daya Bay experiments have found no evidence of a sterile neutrino, but their combined results significantly shrink the hiding space for this elusive particle.
The Computational Science Initiative at Brookhaven Lab will develop modeling and simulation applications for nuclear and high-energy physics, focusing on lattice quantum chromodynamics calculations and computational chemistry code NWChem. The projects aim to optimize societal impact in fields like climate science and materials science.
The DOE's Exascale Computing Project awards $39.8 million to 15 research teams, including Argonne-led initiatives focusing on cosmology, precision medicine, and urban systems. These projects will drive advancements in high-performance computing for scientific discovery, national security, and economic competitiveness.
A team of researchers from the University of Oxford suggests that life on Earth is more likely to exist in the future than it is now. This is because the necessary elements for life, such as carbon and oxygen, took tens of millions of years to develop following the Big Bang.
Researchers from LMU Munich analyzed data from the Sloan Digital Sky Survey to calculate the dynamics of cosmic voids. Their findings demonstrate that the analysis of voids is a suitable approach to investigating gravity in empty regions and determining the total density of matter in the universe.
Astronomers have discovered a rare gravitational lensing system dubbed the Eye of Horus, which offers a unique opportunity to probe the fundamental physics of galaxies. The system, consisting of two distinct background galaxies behind a foreground galaxy, provides valuable insights into galaxy interactions and cosmology.
Researchers used computer modeling to investigate galaxy colors and their relation to evolution. They found that rare green galaxies are likely at a critical stage of transformation from blue to red as they age. The study suggests that these galaxies' unique colors can provide insights into the processes driving their evolution.
Scientists using cosmological simulations and gravitational wave signals predict initial mass of supermassive black hole seeds. The research aims to uncover mechanism that created these massive black holes and when they formed in the early Universe.
Researchers use new computer codes to create accurate models of the universe and its contents, shedding light on the evolution of the universe and the growth of structure within it. The study confirms that small-scale structures produce significant effects on larger distance scales, providing new insights into gravity and cosmology.
Victor Flambaum's appointment at the Helmholtz Institute Mainz is expected to give great impetus to the development of the PRISMA Cluster of Excellence. He will be collaborating with various departments, including experimental groups working on dark matter and antimatter research.
Researchers detected gamma-ray emission in Arp 220, revealing extreme energetic processes and hidden cosmic rays. The finding expands energy observations of galaxies and sheds light on the population of extreme energetic particles.
Dmitry Budker, Experimental Atomic Physics professor at Mainz University, receives a EUR 2.5M ERC Advanced Grant to systematically search for dark sector particles. The project aims to identify new techniques using magnetic resonance and magnetometry to provide direct connections to the dark sector.
The Gruber Foundation Cosmology Prize recognizes the first observation of gravitational waves by the LIGO team, confirming a key prediction of Einstein's theory of general relativity. This achievement opens up new means of studying the universe and provides direct evidence for the existence of black holes.
Astrophysicists have observed a distant star in Andromeda with a different positioning of sunspots, indicating a magnetic field driven by unique internal dynamics. The star's rapid rotation creates a powerful magnetic field, resulting in asymmetrical distribution of sunspots on its surface.
Numerical simulations using BURST code reveal insights into the role of neutrinos, nuclei, and other particles in shaping the early universe. The research aims to investigate existing puzzles of cosmology, including dark matter and dark radiation.
The BURST code simulates conditions during the first few minutes of cosmological evolution to model the role of neutrinos, nuclei and other particles in shaping the early universe. This allows physicists to investigate existing puzzles of cosmology, including the nature and origin of visible matter and dark matter.
Astronomers at UMass Amherst report the discovery of eight 'outrageously luminous' galaxies, which outshine previously brightest known galaxies. The newly observed galaxies are estimated to be about 10 billion years old and formed only 4 billion years after the Big Bang.
Researchers at the University of Southern Denmark propose a new model for dark matter, suggesting a heavier particle that interacts only through gravity. This PIDM particle could have been created in the early universe under extremely hot conditions, and its existence can be tested using planned gravitational wave experiments.
Researchers successfully simulated the Unruh effect using an NMR quantum simulator, replicating theoretical predictions and creating new quantum correlations. The study paves the way for exploring accelerated systems in black hole physics, cosmology, and particle physics.
Researchers at St John's College, University of Cambridge, developed a computer program that can answer the mind-bending puzzle of arranging 128 soft spheres. The solution, 10^250, vastly exceeds the total number of particles in the universe and has implications for understanding configurational entropy and its applications in physics ...
A study published in Physical Review Letters shows that a galaxy cluster's formation history plays a role in its interaction with the surrounding dark matter halo. The researchers found that clusters formed from more dispersed galaxies were clumpier and interacted differently with their environment.
A new theory suggests a novel way to probe the beginning of space and time, shedding light on initial conditions. The researchers propose using 'primordial standard clocks' to put time labels on seed fluctuations, allowing for the distinction between inflation and contraction scenarios.
Researchers have successfully created and observed knotted solitary waves, or knot solitons, in a quantum field. The discovery opens up new avenues of study for understanding the properties of quantum mechanics and its potential applications in fields such as cosmology and quantum computers.
Physicists propose a smaller secondary inflationary period to account for the universe's estimated dark matter abundance. This new theory suggests a 'hidden sector' of physics, where interactions dilute primordial particle abundances, leaving behind the observed dark matter density.
Physicists have developed an extremely high-precision method for magnetic field measurement, combining the accuracy of helium and cesium magnetometers. This device has an intrinsic sensitivity ideal for explaining the missing antimatter in the universe, a key area of research in fundamental physics and cosmology.
Researchers have discovered a detailed record of an FRB, providing new insights into its origin and environment. The signal exhibited Faraday rotation and passed through two distinct regions of ionized gas, shedding light on the mysterious astrophysical phenomenon.
The Nearby Supernova Factory has developed a new method to measure cosmological distances using 'supernova twins,' which are pairs of supernovae with closely matched spectra. This approach reduces the scatter in brightness dispersion to just 8%, allowing for more accurate measurements and a stronger test of dark energy theory.
A Chinese research team led by Prof. Qing-Guo Huang accurately determined the Hubble constant using Baryon Acoustic Oscillation datasets, achieving a precision of around 1.3%. This result questions the measurement accuracy of Nobel laureate Adam Riess' team.
Researchers have run the largest cosmological simulation to date, modeling the universe's evolution from 50 million years after the Big Bang to the present day. The Q Continuum simulation provides new insights into dark energy and galaxy formation, with data analysis ongoing for several years.
A new hydrodynamical simulation of the universe's visible structure, Magneticum Pathfinder, provides unparalleled insights into the cosmic landscape. The simulation covers a vast area of 12.5 billion light years, featuring unprecedented resolution and detail.
A proposed technique from physics can help remove experimenter bias in social science research, improving confidence in published studies. Researchers suggest using blind analysis to prevent confirmation biases and ensure more accurate conclusions.
Physicists suggest detecting dark matter through radiation signals created by particle collisions, increasing chances of detection in underground detectors and specific areas in space. The current satellite-based experiments may have been searching for the wrong signals.
Astronomers have discovered a young, Jupiter-like exoplanet that provides insights into planetary origins. The Gemini Planet Imager revealed 51 Eridani b, which is still warm and luminous from its formation, with conditions that depend on whether it formed slowly or suddenly.
Scientists have discovered a Jupiter-like planet, 51 Eridani b, in a young star system that could help understand how planets formed around our sun. The exoplanet features the strongest methane signature ever detected and is roughly twice the mass of Jupiter.
Scientists have discovered a young Jupiter-like exoplanet, 51 Eridani b, with the strongest methane signature ever detected in an alien planet's atmosphere. The exoplanet is roughly twice the mass of Jupiter and offers insights into planet formation and the early stages of star development.
A new simulation by Carnegie Mellon University researchers suggests that large disk galaxies, like the Milky Way, might have formed in the early universe. The BlueTides simulation, which is 100 times larger than previous simulations, shows a number of disk galaxies existing at 500 million years post-Big Bang, challenging long-held theo...
A team of astronomers using ALMA has detected the faint glow of ionised carbon in a galaxy just over 800 million years after the Big Bang. This finding reveals new details about the assembly of galaxies in the early universe and provides valuable information on the interstellar medium and star formation processes.
Researchers developed a new map of dark matter distribution using DES data, providing valuable tool for cosmology to answer questions about dark energy and dark matter. The mass map allows scientists to check their work and verify the relationship between galaxy distribution and dark matter density.
Astronomers have observed a super-bright supernova associated with an ultra-long-lasting gamma-ray burst, lasting over half an hour. The supernova was 15 times brighter than usual, suggesting a massive star release of extra energy in its death process.
The Large Synoptic Survey Telescope (LSST) will survey the entire Southern Hemisphere's sky, collecting 30 terabytes of data nightly. The telescope aims to map 20 billion galaxies and observe supernovae, offering stringent tests on dark matter and dark energy.
Astrophysicists developed a method to calculate Rayleigh scattering's effect on the cosmic microwave background, potentially improving our understanding of the Universe's birth. This calculation may help researchers better comprehend the formation of our 13.6 billion-year-old Universe.
A study published in Nature found that galaxies are being strangled to death due to a lack of raw materials needed to form new stars. The team analyzed metal levels in over 26,000 galaxies and found that dead galaxies have higher metal content than alive ones.
Researchers discovered a massive supervoid, 1.8 billion light-years across, that could explain the unusual Cold Spot in cosmic microwave background radiation. The void's effect on light traveling through it results in colder temperatures, potentially revealing exotic physics beyond standard cosmology.
Researchers have found conclusive evidence of a black hole in Henize 2-10, a small, starburst galaxy. The team analyzed X-ray observations from four space telescopes over 13 years, confirming the presence of a supermassive black hole with a mass one million times that of the sun.
Researchers have built detailed computer simulations of a GRB jet's internal structure, revealing that non-uniformity is key to determining astroparticle emission. The model predicts a lower neutrino flux from GRBs than previously thought, which may be detectable by the next generation of neutrino telescopes.
Researchers at RIT studied binary spinning black hole interactions, revealing a long-term spin dynamic that continuously flips the spin until merger. This process may affect the growth of black holes surrounded by accretion disks and alter galactic and supermassive binary black holes.
Researchers used ESA's Herschel and Planck space observatories to identify objects in the distant Universe that could be precursors of today's galaxy clusters. These early galaxies were found to be forming stars at an extremely high rate, with some converting gas and dust into stars at a rate 1,500 times faster than our own Milky Way.
Researchers used data from NASA's Lunar Prospector spacecraft to map the radioactive element thorium from an unnamed volcano in the Compton-Belkovich Volcanic Complex. The study found debris from the eruption spread over a vast area, comparable to Scotland's size.
Scientists at NIST have developed a new approach to measure X-ray angles with greater precision, reducing errors by three times. This improvement will enable better understanding of newly designed materials and their properties.
Researchers observed a rare phenomenon where the light from a distant supernova is deflected by a massive galaxy, creating four separate images. The discovery provides insights into dark matter, which makes up about 95% of the universe's mass.
A team of researchers has discovered a very distant galaxy that contains a large amount of dust, changing astronomers' previous calculations of how quickly the dust was formed. The discovery suggests that galaxies were enriched with dust particles containing elements such as carbon and oxygen, which could form planets.