A Cornell astrophysicist explains how the Imaging X-ray Polarimetry Explorer (IXPE) satellite detected polarized X-rays from a magnetar, revealing 'photon metamorphosis' – a transformation of X-ray photons. The phenomenon is a natural consequence of quantum electrodynamics under strong magnetic field conditions.
Researchers at ANU and AMRI used micro-CT scans to study a fossilized plesiosaur's stomach contents, finding 17 previously undiscovered fish vertebrae. This study provides insights into the evolutionary history of extinct organisms and helps predict how modern marine life may respond to climate change.
A study at ECCMID shows AI software can detect TB from chest X-rays with sensitivity and specificity comparable to that of trained radiologists. The technology has the potential to improve diagnosis in low-resource settings where radiologists are scarce.
The HERA team has improved the sensitivity of a radio telescope, allowing them to detect radio waves from the cosmic dawn era. The data suggests that early galaxies contained few elements besides hydrogen and helium, unlike modern galaxies.
A new study by EPFL researchers has calibrated the best cosmic yardsticks to unprecedented accuracy, further amplifying the Hubble tension. The Hubble constant is measured in kilometers per second per megaparsec and has puzzled astrophysicists and cosmologists worldwide.
A Penn State-led team has discovered a new physical mechanism explaining naturally occurring X-rays associated with lightning activity in the Earth's atmosphere. The researchers developed a mathematical model that explains how electric fields amplify electrons, driving the phenomenon of relativistic runaway discharges in air.
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 shed new light on the origin of gamma-ray bursts using the brightest ever recorded event, GRB 221009A. The study reveals a complex jet producing both visible and X-ray light, as well as unexpected excess millimeter and radio emission.
A new study finds that supernovae have a persistent influence on marine life's biodiversity, with variations in nearby exploding stars closely following changes in marine genera. Supernovae may regulate climate through cosmic rays, influencing nutrient transport and primary bioproductivity.
Scientists used rare isotopes to study erosion rates in the Andes Mountains, finding that sediments eroded from high mountain watersheds were shielded from cosmic rays for at least 7-15 thousand years. This helps predict where future landslides might occur and understand landslide risks.
Researchers found that current anti-predator gear can reduce clam mortality by four- to tenfold, with double-layered treatments showing the highest survival rates. However, rays were still capable of interacting with the gear for prolonged periods, potentially diverting them from other natural habitats.
A study published in Radiology found that an AI tool can accurately identify normal and abnormal chest X-rays with a high degree of sensitivity. The tool identified abnormal chest X-rays with a 99.1% sensitivity rate, outperforming clinical board-certified radiologists.
Researchers used machine learning to classify hundreds of thousands of X-ray objects, discovering thousands of new cosmic objects including black holes and neutron stars. This breakthrough establishes a state-of-the-art capacity for applying machine learning techniques in fundamental astronomy research.
Researchers found that AI significantly improved the detection of lung nodules on chest X-rays, detecting actionable nodules at a rate of 0.59% compared to 0.25% without AI assistance. The study suggests that AI may work consistently across different populations.
Researchers from Waseda University measured the energy spectrum of boron and the B/C flux ratio in high-energy cosmic rays using the CALorimetric Electron Telescope. The results indicate a different spectral index for boron compared to carbon, with implications for our understanding of cosmic ray propagation mechanisms.
Citizen science project EEE enables students to collect and analyze data on cosmic rays, producing secondary particles that can be detected on Earth. The network of 60 detectors across Italy allows for correlations between events hundreds of kilometers apart.
COSMOCAT proposes using cosmic rays to transport random numbers, eliminating the need to send decryption keys and enhancing local device and network security. The system can be used alongside current wireless technologies, offering faster speeds and limited distance capabilities.
A new study from the University of Michigan suggests that ultraviolet rays, not cosmic rays or X-rays, fuel chemistry in late-stage planet development. This discovery provides a chemical signature to trace exoplanets back to their cosmic nurseries.
Researchers developed a new technology that captures sound waves created by X-rays to map radiation dose within the body. This allows doctors to guide treatments in real-time, reducing collateral damage and increasing precision.
Researchers at Helmholtz-Zentrum Berlin discovered that high-energy X-rays can cause damage to bone collagen, even at low irradiation doses. The study used powerful X-ray sources and sensitive detectors to examine the effects on fish and mammalian bone samples.
Researchers have found a possible explanation for the discrepancy between observations and simulations in the cosmic web. By using low-redshift intergalactic medium data as a calorimeter, they discovered that ultralight dark photons could provide an additional heating mechanism to reconcile the difference.
Researchers observed a gamma-ray burst that defied categorization, sparking an international investigation. The team discovered a kilonova, a smoking-gun proof of neutron star collision, which challenged existing theories on short gamma-ray bursts.
Researchers found that gamma rays can catalyze the formation of amino acids in early meteorites, which could have contributed to the origin of life on Earth. The study provides evidence for a possible mechanism by which life's building blocks were delivered to our planet.
A study published in the Astrophysical Journal reveals a strong correlation between cosmic ray counts and the solar cycle at Mars and Venus. The research found that cosmic rays are suppressed during peak solar activity, highlighting the importance of understanding these interactions for future robotic missions and human exploration.
Astronomers have made the first-ever discovery of a rare cosmic 'lunch' involving a black hole devouring a nearby star and releasing relativistic jets further out into the universe. The event, AT2022cmc, was detected using a novel data-crunching method that quickly identified it in ZTF survey data.
In a rare piece of good news for the marine world, reef manta rays have been found to be increasing significantly in population in Raja Ampat archipelago. The study highlights the importance of well-enforced Marine Protected Areas and fisheries regulations in their recovery.
A distinct population of oceanic manta rays was identified off the coast of Ecuador, with an estimated total population of over 22,000 individuals, making it more than 10 times larger than any other known subpopulation. The population is large and potentially healthy due to favorable conditions in the region.
Researchers use polarized X-ray measurements to refine models of black holes swallowing matter. The new data from Cygnus X-1 reveals a pencil-shaped plasma outflow and supports the hypothesis that processes near the black hole launch jets. This insight improves understanding of gravity's effects on space-time around black holes.
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 IceCube Neutrino Observatory has identified NGC 1068 as a source of high-energy neutrinos. The newly discovered properties of this source differ from previously known blazars, suggesting multiple populations of sources may contribute to the observed cosmic neutrino background.
Astronomers using the VLA discovered that fast-moving cosmic ray electrons drive winds in the neighboring galaxy M33, slowing down new star formation. This finding challenges previous theories, suggesting cosmic rays are a more general cause of galactic winds.
Researchers developed a new technique using femtosecond laser pulses to fabricate precision ultrathin mirrors for space telescopes. The method can help correct errors in mirror fabrication and enable sharper images of astronomical x-rays.
Researchers detected a spectral softening around 10 TeV in the high-energy cosmic ray proton spectrum, suggesting the proton energy spectrum is not consistent with a single power law variation. The study contributes to understanding of cosmic ray acceleration by supernovae and propagation mechanism.
Researchers developed an AI system that can quickly and automatically evaluate chest X-rays for TB using deep learning. Analysis showed the system was comparable to radiologists for determining active TB on chest X-rays, with similar performance across different patient subgroups. The system has the potential to aid screening in areas ...
Researchers propose using precision data from upcoming experiments to test the cosmological collider effect and unravel the mystery of matter's origin. They suggest that leptogenesis, a well-known mechanism, could be used to explain the imbalance between matter and antimatter in the early universe.
A new study demonstrates bound vortex light on optical chips by simulating gauge fields of cosmic strings. The research team created a deformed photonic graphene inspired by cosmic strings, which can generate and transport optical vortices and control photon orbital angular momentum.
Astronomers have long sought the launch sites for high-energy protons in our galaxy, and NASA's Fermi Gamma-ray Space Telescope has confirmed that a supernova remnant is just such a place. The shock waves of exploded stars boost particles to speeds comparable to light, producing a tell-tale glow in gamma rays.
Scientists from Johns Hopkins APL have compiled the first complete map of hydrogen abundances on the Moon's surface using data collected over two decades ago. The map identifies two types of lunar materials containing enhanced hydrogen and corroborates previous ideas about lunar hydrogen and water.
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.
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.
Researchers have confirmed a globally rare manta ray nursery in the Raja Ampat islands in Indonesia, providing critical insights into juvenile reef manta rays' behavior and habitat. The discovery is expected to inform conservation efforts and protect this endangered species.
A team of researchers has drawn new limits on the existence of long theorized magnetic monopoles by combining cosmic rays with particle accelerators. By re-analyzing data from previous experimental searches, they identified novel limits on monopoles across a wide range of masses.
A team of researchers has observed a new kind of wave mixing process involving soft x-rays, allowing for selective tracking of electrons in materials. By analyzing this process, they gain insights into the nature of the material and its electronic structure.
A new study identifies Komodo National Park as a key location for the recovery of threatened manta rays. The research uses crowdsourced photographs and machine learning to track individual manta rays' movements and preferences, revealing some species have strong site loyalties despite short distances.
The cosmic time synchronizer uses cosmic rays from deep space to detect specific signatures, allowing devices to synchronize their clocks accurately. This technology has the potential to fill gaps in current time synchronization methods, particularly in remote or underwater locations.
The MAGIC telescopes detected gamma rays with energies of 250 gigaelectronvolts from the RS Ophiuchi nova, a hundred billion times more energetic than visible light. This suggests that nova outbursts are a source of cosmic rays, specifically accelerated protons and nuclei of hydrogen atoms.
A new undersea detector has successfully detected a mild tsunami in Tokyo Bay using the power of muons and cosmic rays. This innovative system uses sensitive detectors to measure changes in ocean swells, providing accurate data for early warning systems and potentially revolutionizing tsunami monitoring.
The project will develop a better understanding of nuclear radiation by integrating recent mathematical developments into radiation transport modelling. This will lead to improved nuclear safety, cancer radiotherapy, and shielding for astronauts from cosmic rays.
Researchers have created the Thesan simulation, a cubic volume spanning 300 million light years across, to study cosmic reionization and galaxy formation. The simulation aligns with observations and sheds light on key processes, such as how far light can travel in the early universe.
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.
A team of PSI scientists has developed an achromatic X-ray lens for the first time, allowing researchers to study nanostructures with high resolution. The innovative lens, which combines two optical principles, enables compact X-ray microscopes that can be operated on industry premises.
Research reveals a cosmic particle acceleration process in a stellar nova, accelerating particles to extreme energies. The observation suggests that the acceleration process could be efficient in supernovae, providing new insights into astrophysics.
Recurrent novae outbursts in binary systems accelerate protons to high energies, suggesting a Hadronic origin of gamma-ray emission. The expanding shock wave from RS Oph's outburst efficiently accelerated protons to gigaelectron volt and teraelectronvolt energies.
Astronomers have confirmed a 30-year-old theory about active galactic nuclei (AGNs) by discovering a supermassive black hole hiding in a thick ring of cosmic dust. The findings provide new insight into how AGNs work and could help understand the history of the Milky Way.
A team of astrophysicists has discovered a new method to measure the cosmic microwave background radiation's temperature at an early epoch of the universe. By observing HFLS3, a massive starburst galaxy, they found a cold water cloud that casts a shadow on the microwave radiation, revealing the Big Bang's relic temperature.
Astronomers have discovered a binary system consisting of a rapidly spinning neutron star and the precursor to an extremely-low-mass white dwarf, dubbed a 'cosmic spider'. The system emits powerful gamma-rays and has been observed using the SOAR Telescope in Chile.
Ancient Chinese scholars viewed sound as a means to assess cosmic qi and predict weather events. Jing Fang's tuning system, developed in the 1st century BCE, used acoustics to construct a closed cycle with reduced gaps, allowing for accurate seasonal predictions.
A new study found that AI can help physicians interpret x-rays after an injury and suspected fracture. AI-assisted diagnosis reduced missed fractures by 29% and increased sensitivity by 16%, improving efficiency and accuracy.
Researchers at KAUST have developed a nanocomposite that absorbs X-rays with near-perfect efficiency and re-emits the energy as light. This innovation improves high-resolution medical imaging and security screening, with detection limits up to 142 times lower than traditional methods.
A team of astrophysicists led by Boston University's Merav Opher has made a groundbreaking discovery about the heliosphere, the bubble surrounding our solar system. Their research suggests that neutral hydrogen particles play a crucial role in shaping the heliosphere's structure and stability.