Cosmologists have found a way to double the accuracy of measuring distances to supernova explosions, enabling precise study of dark energy. The Nearby Supernova Factory collaboration has developed a new method that quadruples the number of supernovae used, allowing for more accurate measurements and reducing biases.
Scientists are certain that dark matter exists, but have no direct evidence. Researchers at the University of Delaware propose using tabletop sensors to detect ultralight dark matter particles. They plan to use optomechanical accelerometers to measure changes in acceleration between materials.
The Institute of Astrofísica de Canarias is part of the DALI experiment, which aims to detect axions and paraphotons in the 6-60 GHz band. This could help explain dark matter's nature and its role in the universe.
Researchers have made a significant step in understanding dark energy using the eBOSS survey, detecting its existence at a 11-sigma significance. The study employed multi-tracer analysis to mitigate systematics and achieve robust cosmological results.
Researchers propose using exoplanet temperatures as a new method for detecting dark matter. By analyzing the effect of dark matter on exoplanet temperatures, scientists hope to gain insights into this mysterious substance. The study suggests that exoplanets could be used to detect both light and dark matter.
Astronomers have released a new all-sky map of the Milky Way's outer halo, revealing a massive reservoir of dark matter. The map also shows a wake of stars stirred up by the Large Magellanic Cloud, set to collide with the Milky Way in about 2 billion years.
A new approach using reimagined telescopes in both hemispheres could help study dark matter and gravitational waves. The BICEP/Keck array is exploring the possibility of increasing scan length to capture larger areas, yielding promising early results.
Physicists at MIT's LIGO Laboratory have searched for ultralight bosons using black holes, but found no slowdown in their spin. The study rules out the existence of ultralight bosons with masses between 1.3x10^-13 and 2.7x10^-13 electronvolts.
Researchers at the Dark Energy Survey combined data on matter distribution, galaxies, and galaxy clusters to refine estimates of dark matter and dark energy. This analysis provides more precise estimates of the average density of matter and its clumpiness, which are crucial parameters for understanding these mysterious substances.
Companies may be intentionally hiring managers with questionable ethics and narcissistic tendencies to manage earnings. Researchers found that these 'dark' personality traits are often preferred over more ethical candidates, leading to inflated earnings reports.
Researchers have discovered that missing baryonic matter is found in the space between galaxies as hot, low-density gas. This study also provides new insights into the nature of gravity, showing that observations are compatible with Einstein's theory of General Relativity.
Researchers used cosmic microwave background data to map location and density of missing baryons around galaxy groups. The measurements reveal that these halos extend up to 6 million light-years from their center, challenging previous models.
Scientists from the NANOGrav Collaboration detected very low-frequency gravitational waves with potential implications for dark matter research. The signals are consistent with phase transitions in the early universe and extremely light axion-like particles, considered promising candidates for dark matter.
A new study advances a decisive test to investigate the origin of solar-mass black holes, which may be connected to dark matter. The research suggests that such black holes could have formed in the early Universe, contradicting conventional stellar evolution astrophysics.
Dr. Christopher Tunnell, a computational astroparticle physicist at Rice University, has been awarded a National Science Foundation (NSF) CAREER Award to further his research on dark matter and other phenomena. The award will support a combined physics and computer science effort to detect rare particles and understand the universe.
A new general relativistic framework for models of galactic rotation curves alleviates the need for dark matter by incorporating gravitomagnetic fields. The theory proposes that these fields can explain the effects of dark matter, suggesting a possible elimination of this form of matter.
Researchers propose a new type of dark energy that could explain conflicting measurements of the universe's expansion rate. The theory suggests that dark energy underwent a phase transition triggered by the universe's expansion, resulting in a more consistent explanation for observed phenomena.
A new theoretical study suggests that supermassive black holes could form directly from dark matter in high-density regions, contradicting current understanding of their formation. This proposal has key implications for cosmology and the early Universe, potentially explaining how supermassive black holes grew so quickly.
Researchers at the University of Granada and Johannes Gutenberg University Mainz have proposed a new heavy particle with properties similar to the Higgs boson. This particle is expected to play a fundamental role in explaining the origin of dark matter, which could solve two major problems in theories of particle physics.
A team of researchers used stellar kinematics to study dark matter in ultra-faint dwarf galaxies, revealing a dense core and limited scattering. This challenges existing theories on self-interacting dark matter, suggesting that supernova explosions may be responsible for less dense distributions.
Researchers use innovative technique called 'quantum squeezing' to dramatically speed up the search for dark matter in the lab. The team hopes to find axion particles, which are likely billions of times smaller than electrons and could explain the existence of dark matter.
Researchers found that some dwarf galaxies may appear dark-matter free due to extreme tidal mass loss, challenging the LCDM cosmological model. Simulations suggest a combined solution to both the structure and low dark matter content of these ultradiffuse galaxies.
A student astronomer has developed a method to track down the Milky Way's missing matter using distant galaxies as 'locator pins'. The technique detects radio sources that have passed through a cold clump of gas, revealing a massive, invisible cloud about 10 light years from Earth.
Researchers analyzed 851,199 listings from 30 dark web marketplaces, identifying 788 COVID-19 related products. The study highlights the importance of monitoring DWMs due to vaccine shortages and potential health risks.
Researchers have developed a new method to detect axions, which are thought to make up 26% of the universe's energy content. The BASE collaboration used ultra-sensitive detectors in Penning trap experiments to set new limits on axion-photon coupling.
Researchers analyzed 851,199 listings from 30 dark web marketplaces between Jan 2020 and Nov 2020 to identify COVID-19 related products. DarkBay/DBay emerged as a prominent platform offering COVID-19 specific listings.
Researchers propose a new theory that predicts the existence of a new force between ordinary and dark matter, making dark matter accessible to forthcoming experiments. The 5-dimensional field equations also predict the existence of a heavy particle with similar properties as the Higgs boson but a much heavier mass.
Astrophysicists at MIT have discovered an extended dark matter halo around Tucana II, a primitive ultrafaint dwarf galaxy. The halo is estimated to be three to five times more massive than previously thought, implying that the first galaxies in the universe were likely larger and more massive.
A combination of observational data and computer simulations have yielded advances in understanding intracluster light, a faint type of light found inside galaxy clusters. The results suggest that ICL might provide a new way to measure dark matter.
Researchers at the University of Sussex calculated a tighter mass range for Dark Matter particles, showing it cannot be 'ultra-light' or 'super-heavy', unless an unknown force also acts upon it. The new range is between 10^-3 eV and 107 eV, significantly narrowing the previously theorized spectrum.
Researchers detected high-energy X-ray emissions around a group of neutron stars, known as the Magnificent 7, which could be attributed to theorized axions or dark matter. The study uses supercomputing and data analysis to predict axion production in neutron star cores.
A giant 2D map of the universe, released by the Beijing-Arizona Sky Survey (BASS), will aid the upcoming DESI project's spectroscopic survey. The map covers half of the sky, spanning over 10 trillion pixels and containing about two billion objects.
Astronomers have released the largest-ever map of the sky, comprising over a billion galaxies, to aid in understanding dark energy. The DESI Legacy Imaging Surveys will provide new insights into this mysterious force driving the Universe's accelerating expansion.
The Dark Energy Survey has released a massive catalog of nearly 700 million astronomical objects, building on the previous data release and improving calibration techniques. The catalog provides unprecedented insights into the distribution of matter in the Universe and may hold clues to how our galaxy was assembled over billions of years.
Researchers measured pulsar accelerations to clock star motions, revealing tiny accelerations at a few centimeters per second. This opens a new window into galactic dynamics and provides clues in the search for dark matter.
Researchers at Kavli IPMU propose a novel scenario for primordial black hole formation, suggesting they could account for all or part of dark matter. They also suggest that PBHs could be responsible for some gravitational wave signals and seed supermassive black holes found in the center of our Galaxy.
A team of international scientists detected an external field effect in over 150 galaxies, challenging the dark matter hypothesis and supporting modified Newtonian dynamics (MOND). The findings suggest that MOND's gravity at low accelerations is stronger than predicted by Newtonian understanding.
Astronomers observing a dark vortex on Neptune noticed it change direction by August 2020, doubling back to the north. A smaller dark spot, possibly a fragment of the giant vortex, was also spotted near its larger cousin in January this year.
A novel multiple-cell cavity design, dubbed 'pizza cavity,' has been developed to address the challenges of searching for axion dark matter in high-frequency regions. The new design improves detection efficiency and allows for faster scanning of frequency ranges compared to conventional methods.
A new method to measure polarization angle developed, achieving precision twice that of previous work. A hint of parity symmetry violation found in the cosmic microwave background radiation with 99.2% confidence level.
Scientists at Duke-NUS Medical School have discovered that long non-coding RNAs (lncRNAs) play a key role in pancreatic cancer development by modifying cell growth. The study highlights the importance of investigating lncRNAs in living organisms and provides potential new targets for precision cancer therapies.
Researchers used a state-of-the-art atomic clock to narrow the search for elusive dark matter, setting new limits on ultralight dark matter's coupling strength. The study established constraints on the floor of normal fluctuations, providing sensitivity to cosmological models of dark matter and accepted physics theories.
Scientists calculate that rare signals from dark matter can be detected by GPS atomic clocks and magnetometers, adding to multi-messenger astronomy
Astronomers have developed a new method to detect dark matter haloes surrounding galaxies, allowing for more precise measurements of the invisible mass. By analyzing the gravitational lensing effect on galaxy rotation, researchers can infer the amount of dark matter required to explain observed distortions.
Researchers at NIST have proposed a novel method to find dark matter by detecting its gravitational interaction with visible matter. A billion millimeter-sized pendulums would act as sensors, sensitive to particles ranging from 1/5,000 of a milligram to a few milligrams, covering the so-called Planck mass.
Astronomers find galaxy Dragonfly 44 has normal amount of dark matter, contrary to earlier claims. The team discovered only 20 globular clusters, reducing the amount of dark matter, and confirming that the galaxy is not unique or anomalous.
A new project led by West Virginia University researcher Kevin Bandura aims to understand the nature of dark energy by mapping out the distribution of matter throughout the universe. The three-year project will use precise observations to study the expansion of the universe, which is currently accelerating due to dark energy.
A University of Colorado Boulder astrophysicist is searching the light coming from a distant magnetar, PSR J1745-2900, for signs of dark matter. The scientist hopes to detect the faint signals of an axion particle transforming into light.
A team led by UC Riverside scientists determines that matter makes up 31% of the total amount of matter and energy in the universe. The researchers used a novel method to measure the mass of galaxy clusters, finding a best combined value of 31.5±1.3%.
Physicists develop new theory to explain neutrino properties, solving lepton conservation issues and potential dark matter answers. The research provides predictions testable by the Large Hadron Collider.
A new study by Yale astrophysicist Priyamvada Natarajan and colleagues found that the smaller dollops of dark matter associated with cluster galaxies are significantly more concentrated than predicted by theorists. The discovery implies a possible gap in scientists' understanding of dark matter.
Astronomers used NASA/ESA Hubble Space Telescope and VLT to map dark matter distribution in galaxy clusters. The data showed unexpected lensing effects 10 times stronger than expected, hinting at a missing ingredient in current theories.
Researchers found far more small-scale dark matter gravitational lenses in galaxy clusters than predicted by standard cosmology. The discovery suggests either an issue with simulation methods or incorrect assumptions about dark matter's nature.
Astronomers have discovered a discrepancy between theoretical models and Hubble observations of galaxy clusters, suggesting a potential gap in our understanding of dark matter. The study used unprecedentedly detailed observations to map the distribution of dark matter on small scales.
A study led by UC Riverside physicist Hai-Bo Yu suggests that the self-interacting dark matter theory explains why two galaxies contain less dark matter than expected. The researchers used sophisticated simulations to show that tidal stripping of the satellite galaxies' mass can occur, leading to a decrease in dark matter content.
A new study found that bilingual children and adolescents had less shrinkage in grey matter compared to monolingual peers during brain development. This suggests that bilingualism may have long-term cognitive benefits. The study also revealed increased white matter, indicating more efficient brain communication.
A new model integrates two phases of matter accumulation in active galaxies, revealing a universal mechanism for ejection of matter by black holes. The research suggests that the molecular phase is part of the outflow, blowing away more matter than previously thought.
The study found that small dark matter haloes have a similar internal structure to larger ones, with smaller clumps orbiting in their outer regions. This could help identify these small objects individually or collectively through future gamma-ray observatories.
A recent study published in Nature has zoomed in on dark matter haloes of varying masses, revealing a surprising similarity in their internal structure. The research team used supercomputers to simulate the evolution of the universe and found that even small haloes have dense centers and spread-out outer regions.
Researchers have eliminated dark matter candidates as the origin of excess gamma rays detected in the Milky Way's galaxy center through extensive modeling exercises. The study puts strongest constraints yet on dark matter properties, ruling out weakly interacting massive particles up to very high-mass particles.