Articles tagged with Universe
Astronomers at Harvard University have discovered a tilted dark matter halo, explaining the Milky Way's warp and flare. The team used models to calculate star orbits within a warped, oblong dark matter halo, matching existing observations of a distorted galaxy.
Scientists propose that pulsars could detect dark matter by observing a subtle additional glow. If axions are produced in strong electromagnetic fields around pulsars, they could convert into observable light.
Astronomers discovered a link between dust surrounding supermassive black holes and radio emission in extremely bright galaxies. The study found that quasars with more dust were more likely to have stronger radio emission.
Researchers have found that studying the mass and movement of the Andromeda galaxy and the Milky Way could help place an upper limit on the value of dark energy. The technique may provide valuable insights into the mysterious force, but it is not yet a direct detection.
An international team of scientists has detected a quasi-periodic oscillation (QPO) signal in the radio band from a Galactic black hole system, revealing features that have never been seen before. The QPO signal may provide the first evidence of activity from a jet launched by a Galactic stellar-mass black hole.
A new study by SISSA has identified the distribution of water vapour in galaxy J1135, which is 12 billion light years away. The researchers used gravitational lensing to observe this remote galaxy and ALMA observations to map its water distribution.
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...
A recent study suggests that supermassive black holes at the center of large galaxies grew in size over billions of years, challenging previous estimates. The research, led by astrophysicist Joseph Simon, used computer simulations to predict the masses of massive black holes, revealing a diverse range of sizes across the universe.
The latest DESI data release provides a precise 3D map of the universe with high certainty. The data also sheds new light on cosmic acceleration and the nature of gravity at large scales.
Researchers believe Earth's formation was facilitated by the accumulation of small pebbles, resulting in the presence of water as a byproduct. This new theory increases the likelihood of finding habitable planets outside our Solar System.
Researchers discovered a gravitationally lensed supernova named SN Zwicky, which was magnified nearly 25 times by a foreground galaxy. This discovery presents an opportunity to study the inner cores of galaxies, dark matter, and the mechanics behind universe expansion.
Researchers found GRB 221009A's jet exhibited a narrow core with wide sloping wings, differing from standard jets. This unique structure may explain the event's extreme energy release and prolonged visibility.
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.
A team of researchers from the University of Minnesota has successfully measured the expansion rate of the Universe using data from a magnified supernova. Their findings provide new insight into the problem and bring scientists closer to obtaining the most accurate measurement of the Universe's age.
A team of astronomers has discovered chemical traces of supermassive stars in globular proto-clusters, born 440 million years after the Big Bang. The study suggests that these 'celestial monsters' enriched the original gas cloud with chemical elements, explaining abundance anomalies in their stars.
Scientists have discovered that quasars are ignited by galaxies crashing together, a process that drives gas towards supermassive black holes and releases extraordinary amounts of energy. This finding provides a significant step forward in understanding how these powerful objects are triggered and fuelled.
The SuperBIT telescope has begun capturing high-resolution images of the Universe on its first research flight. It is investigating the mystery of dark matter, which is thought to be made up of particles that can bounce off each other during galaxy collisions.
Researchers have discovered a tiny galaxy with big star power using the James Webb Space Telescope, providing new insights into the universe's early stars. The galaxy is one of the smallest ever discovered at this distance—around 500 million years after the Big Bang—and generated new stars at an extremely high rate for its size.
A team of scientists from Kyoto University has confirmed that galaxy alignments can be a powerful probe for dark matter and dark energy. The analysis of 1.2 million galaxy observations verified general theory of relativity at vast spatial scales, providing strong evidence for gravity's role in shaping the universe.
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.
Indiana University researchers and collaborators have completed a six-year experiment to study the fundamental properties of neutrinos. They observed nearly 10^26 atoms over six years, pushing the boundaries of detection for this rare phenomenon.
The detection of GRB 221009A marks the most energetic gamma-ray burst ever observed, with a luminosity surpassing that of entire galaxies and hundreds of billions of stars. The event was followed up by space-based telescopes, including the James Webb Space Telescope, which provided insight into its properties.
Astronomers have observed an extremely rare and aspherical Fast Blue Optical Transient (FBOT) explosion 180 million light years away. The explosion, similar to a flat disc shape, challenges scientists' current understanding of stellar explosions.
Researchers modeled how elements move across star-forming regions, finding that galactic winds influence temperature and metal distribution. The study's findings suggest a non-spherical wind pattern, contrary to previous spherical models.
A team of astronomers has discovered an ultramassive black hole in the foreground galaxy, with a mass estimated to be over 30 billion times that of our Sun. This massive object was detected using gravitational lensing and supercomputer simulations.
An international team of researchers has successfully demonstrated the formation of fullerene and its derivatives in the universe. The reaction involves a corannulene radical and vinyl acetylene, which deposit layers of carbon onto each other to form the desired molecules.
Astrophysicists used AI to improve mass estimates of galaxy clusters by adding a simple term to an existing equation. The new equation downplays the importance of complex cores in calculations, providing more reliable mass inferences.
A series of simulations have enabled researchers to probe the heterogeneous structure of the universe by treating galaxy distribution as a collection of points. The study reveals that on large scales, the universe approaches hyperuniformity, while on smaller scales it becomes almost antihyperuniform and strongly inhomogeneous.
A University of Queensland-led research team is using an unusual caesium atom to search for dark matter particles. The team's work may also improve atomic theory calculations and technology, such as navigation systems.
An international team of astrophysicists has discovered six potential galaxies emerging in the universe's earliest moments, containing as many stars as the Milky Way. These ancient structures are gigantic and massive, contradicting current cosmological theory, with calculations suggesting they formed hundreds of new stars a year.
Researchers found that kilonovae, caused by neutron star collisions, produce spherical explosions with symmetrical shapes. The discovery may provide a new key to fundamental physics and measuring the Universe's age.
Researchers from the University of Rochester and MINERvA collaboration used beams of neutrinos at Fermilab to investigate proton structure. This technique offers a new view on measuring protons using neutrino scattering, providing insights into nuclear effects and improving future measurements of neutrino properties.
A team of researchers has created a highly accurate map of the universe's matter distribution, combining data from two major telescope surveys. The analysis reveals that matter is less 'clumpy' than expected, suggesting potential inconsistencies with the current standard model of the universe.
Researchers have detected a radio signal from atomic hydrogen in an extremely distant galaxy at redshift z=1.29, marking the largest distance so far. The signal was amplified by gravitational lensing, allowing the team to observe the galaxy's atomic hydrogen mass, which is almost twice its stellar mass.
A team of researchers has discovered three ultra-faint dwarf galaxies around a Milky Way-mass galaxy, providing insights into the formation and evolution of these enigmatic objects. The findings may help develop universal models for how the universe's oldest galaxies formed.
A team of astronomers discovered 87 galaxies that could be the earliest known galaxies in the universe using data from NASA's James Webb Space Telescope. This finding suggests a revision to our understanding of galaxy formation, indicating that more galaxies may have formed earlier than previously thought.
Researchers at RIT have made a groundbreaking discovery confirming the light emitted by stars outside our galaxy is two to three times brighter than previously thought. This finding suggests a possible absence of optical light sources in the universe, potentially changing our understanding of how it formed over time.
Researchers discovered a long-duration gamma-ray burst that defied prevailing theories, leading to the proposal of a new model for its origin. The unusual burst was found to have characteristics similar to those of short-duration bursts, challenging current understanding of gamma-ray burst formation.
Researchers studied the strong nuclear force using nickel-64 nuclei, discovering that they change shapes under high-energy conditions. The team used advanced detectors to analyze gamma rays and particle direction, revealing two possible shapes for the nucleus: oblate and prolate.
A team led by University of Maryland astronomer Igor Andreoni discovered a bright optical flare caused by a dying star's encounter with a supermassive black hole. The event, AT2022cmc, is extremely rare and was found using a novel data pipeline that analyzed the Zwicky Transient Facility survey.
Researchers believe a black hole suddenly began devouring a nearby star, releasing energy and creating the brightest ever recorded TDE. The jet's direction may be pointing towards Earth, causing Doppler boosting, and could reveal insights into how supermassive black holes grow.
A team of researchers used images from the Hubble Space Telescope to determine the age and composition of a distant supernova. The study suggests that the heavier atomic elements necessary for life were created inside stars and released during supernovae explosions.
Researchers have measured the size of a star dating back 2 billion years after the Big Bang, gaining insight into the stars and galaxies of the early Universe. The study used detailed images of a red supergiant supernova to reconstruct its cooling process, shedding light on how massive stars formed in galaxies during this period.
The book delves into the concept of emergence in two domains: condensed matter physics and quantum gravity. It reveals surprising connections between seemingly disparate areas of physics, shedding light on how mysterious materials work and the origins of space and time.
A team of astronomers used the James Webb Telescope to identify five ancient globular clusters, potentially containing the first and oldest stars in the universe. The clusters were formed close to the Big Bang, offering insights into star formation and galaxy evolution.
Researchers at UNH tested state-of-the-art calculations of the strong force with an experiment probing proton spin, finding agreement with one but not the other. The findings provide a benchmark for testing the strong force and its applications in future technology.
Astronomers detect massive light burst from 'infant' Universe, revealing properties of cosmic explosions. The GRB was triggered by a space explosion that occurred when the Universe was less than 900 million years old.
A new MIT study suggests that current opacity models used by astronomers may not be accurate enough to interpret the precise light-based signals from the James Webb Space Telescope. The researchers predict that properties of planetary atmospheres, such as temperature and elemental composition, could be off by an order of magnitude if e...
Researchers found that dark matter halos in ultra-diffuse galaxies have lower concentrations than expected, raising questions about their formation and evolution. The study's surprising results indicate these galaxies may be younger and contain more gas than normal galaxies.
Astronomers propose a new method to measure the universe's expansion rate by analyzing the changes in signal properties of black hole collisions. By using the entire population of black holes as a calibration tool, scientists can directly identify and correct for errors, providing a more accurate measurement.
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.
A new study led by Dartmouth researchers provides the clearest understanding yet of supermassive black holes' life cycles. By analyzing X-ray telescope data and a new data analysis technique, scientists found that accretion rates vary significantly depending on how obscured an object is by gas and dust ring.
A team of researchers found that the internal donut-shaped structure of quasars can affect the ionization level of intergalactic gas in different directions. The study suggests that a dust torus is likely to be responsible for this anisotropic effect.
An international research team has shed light on the origin of neutrinos, shedding new evidence that blazars can be confidently associated with astrophysical neutrinos. The study utilizes neutrino data from the IceCube Neutrino Observatory and BZCat catalogue to establish a connection between high-energy neutrinos and galactic nuclei.
A team of scientists led by Clemson University's Marco Ajello has provided conclusive evidence that astrophysical neutrinos come from blazars, which are powerful black holes. This breakthrough resolves the long-standing question about the origin of high-energy cosmic rays.
Researchers have detected a persistent radio signal from a far-off galaxy that repeats every 0.2 seconds in a clear periodic pattern, similar to a heartbeat. The source of the signal is unknown but may be related to a radio pulsar or magnetar, which could provide an astrophysical clock for measuring the universe's expansion.
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.
Astronomers discovered five isolated 'blue blob' systems containing young, blue stars and little atomic hydrogen gas. The presence of mostly young stars and lack of gas suggests recent gas loss, contradicting expectations of older red stars.
Scientists studying particle collisions at RHIC have identified a specific mechanism for jet quenching, where individual quarks emit gluons as they interact with the QGP. The results provide new insight into the properties of quark-gluon plasma, which filled the early universe.
Physicists are using a deposit of nearly pure argon, extracted from southwest Colorado, to search for answers about the universe's dark matter. The argon is separated from carbon dioxide and shipped to Italy for use in the DarkSide-20k detector.