Astronomers discovered a new way to destroy stars, generating powerful gamma-ray bursts in the process. The study found that stellar collisions in dense environments surrounding supermassive black holes can create these explosive events.
A University of Essex-led study found that fast-oscillating brain waves linked to brief pain and touch differ widely in scans, with individual patterns stable across time. The research challenges previous findings on the relationship between pain and gamma oscillations.
Researchers have found preliminary evidence supporting quantum gravity models that predict an energy-dependent reduction in speed of ultrarelativistic particles. This effect, expected to be small, has been observed in gamma-ray bursts and ultra-high-energy neutrinos detected by Fermi and IceCube telescopes.
The LHAASO collaboration has measured the complete high-energy light curve of a gamma-ray burst (GRB) for the first time, including its entire phase from rise to decay. This observation provides a perfect dataset for testing theoretical models and could remain one of the best results for decades or centuries.
Scientists observe a bright optical emission after the most powerful gamma-ray burst documented, providing detailed data on radiation across various wavebands. The study reveals that luminous phenomenon arises from high-energy charged particles in a rarefied medium with a powerful magnetic field.
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.
A new study by MIT scientists shows that 40 Hz vibration can reduce levels of the hallmark Alzheimer's protein phosphorylated tau, preserve neurons, and improve motor function in mouse models. This research demonstrates a third sensory modality to increase gamma power in the brain, offering new hope for Alzheimer's treatment.
A longitudinal study using acoustic telemetry monitored rays in clam leases, finding that rays spent more time near sites than reported, but not necessarily preferring them. The study highlights the need to understand if clam leases are part of rays' natural foraging habitats and if they interact with the clams.
A study found that restoring gamma oscillations in brain regions processing smells can counter depression, suggesting a potential new treatment approach. The research involved mice and rats, who showed increased depressive behaviors when gamma signals were suppressed, but returned to normal after receiving amplified signals.
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 discovered that gamma delta T cells can effectively combat triple-negative breast cancer by targeting stress-induced molecules and phosphoantigens. Counteracting metabolic changes with zolendronate makes immunotherapy more efficient.
Researchers detected prompt optical emission and its transition to early afterglow of a gamma-ray burst using the Ground Wide Angle Camera Array. The study provides unique data that constrains the characteristics of the progenitor, suggesting a small stellar mass.
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.
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 analyzed data from numerous spacecraft and observatories to characterize the brightness of a gamma-ray burst detected on October 9, 2022. The burst, known as BOAT, was found to be 70 times brighter than any previously seen, occurring once in every 10,000 years.
Scientists used Insight-HXMT and GECAM-C to accurately measure the brightness and energy released by GRB 221009A, which is 50 times brighter than previous records. The burst's isotropic-equivalent energy is about 10^55 erg, equivalent to 8 solar masses.
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.
The Swift Observatory team, led by Maia Williams, detected the brightest gamma-ray burst ever recorded, GRB 221009A. The burst was incredibly bright and had an afterglow that was more than 10 times brighter than any previous observation.
A team of researchers has successfully captured highly polarized X-ray transitions using a combination of state-of-the-art instruments. The experiment revealed the presence of quantum interference effects, which were initially thought to be absent in atomic physics.
The Fermi Gamma-ray Space Telescope has captured a dynamic animation of the gamma-ray sky, revealing frenzied activity over nearly 15 years. The data, now publicly available, includes records of source brightness changes and sheds light on blazars and multimessenger astronomy.
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 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.
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.
Scientists discover first gamma-ray eclipses from spider star systems using Fermi data, calculating system tilt and pulsar mass. The discovery helps researchers measure pulsar masses, constraining physics within extreme environments.
Researchers from Bar-Ilan University have re-examined data on jet velocities and discovered that lower initial jet speed can explain perpetual emission, filling the gap between velocities. This finding changes the paradigm and proves that jets are formed in nature at all speeds.
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.
Astronomers detected light patterns indicating the brief existence of superheavy neutron stars shortly before they collapsed into black holes. These mega neutron stars formed from the collision of two neutron stars and had nearly twice the size of a typical neutron star, spinning at nearly 78,000 times a minute.
Large gamma-ray emitting bubbles are produced by fast blowing outward winds and the associated reverse shock. Numerical simulations successfully reproduced the temperature profile observed by an X-ray telescope, supporting this scenario.
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.
A study in Serrana, Brazil showed that mass vaccination reduced severe cases and death rates even while gamma and delta variants were circulating. Vaccination coverage reached 80% of the target population.
A team of astrophysicists has successfully measured a gamma-ray burst's hidden energy by utilizing light polarization. The total explosion energy was found to be about 3.5 times bigger than previous estimates, shedding new light on the progenitor star's masses and the evolutionary history of the universe.
Scientists have developed a new composite material that exhibits excellent gamma-ray shielding performance, 10 times higher than epoxy. Crystal plane engineering plays a crucial role in regulating the electron density of MAPbI3/epoxy composites, improving their ability to absorb radiation.
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.
A recent gamma-ray burst has been identified as a kilonova, shedding light on the merging of neutron stars and black holes. The event produced an excess of infrared light and lasted about a minute, contradicting the typical short duration of such explosions.
The event challenged scientists' understanding of gamma-ray bursts (GRBs), which are the most powerful events in the universe. The burst's high-energy light and kilonova visible and infrared light were detected by NASA's Swift Observatory and Fermi Gamma-ray Space Telescope, providing new insights into how heavy elements are created.
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.
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.
A blast of high-energy light from a galaxy 1 billion light-years away challenges long-held theories on gamma-ray bursts (GRBs). The event, detected by NASA's Swift Observatory and Fermi Gamma-ray Space Telescope, reveals that kilonovae triggered by neutron star collisions can also produce long GRBs.
A team of astrophysicists has discovered that at least some long gamma-ray bursts (GRBs) can result from neutron star mergers, contradicting the long-held belief that they solely originate from massive star collapses. This finding also sheds new light on the formation of the heaviest elements in the universe.
A recent astronomical observation supports theoretical modeling, revealing a new observational fingerprint of neutron-star mergers that may shed light on the production of heavy elements throughout the universe. The detection pushes our understanding of gamma-ray bursts to the limits and breaks the standard idea of these events.
Two independent teams of astronomers detected the unexpected hallmarks of a kilonova after a long gamma-ray burst, challenging the prevailing theory that long GRBs exclusively come from supernovae. The discovery was made possible by the proximity of the event and the sensitivity of telescopes like Gemini North.
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.
According to new research led by the University of Bath, some short-duration gamma-ray bursts are triggered by the birth of supramassive stars, not black holes. This discovery may offer a new way to locate neutron star mergers and gravitational wave emitters.
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.
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 found a direct connection between low oxygen conditions and increased fetal hemoglobin production in adults. A drug that activates the cellular response to low oxygen could potentially treat sickle cell disease by promoting HbF production, which has therapeutic benefits.
Researchers found that ruxolitinib, a clinically approved drug, suppresses ICB-resistant melanomas by reprogramming TILs and relying on host TNF signaling. This discovery offers a potential target for bypassing therapeutic resistance in advanced melanoma patients.
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 ...
A team of researchers has discovered that gamma-ray radiation from the Sagittarius Dwarf galaxy can be explained by millisecond pulsars, ruling out dark matter annihilation as a possible explanation. The study reveals that these stellar objects are efficient accelerators of high-energy electrons and positrons.
A team of researchers has detected a small satellite galaxy of the Milky Way filled with dark matter using gamma-ray emissions. The discovery was initially thought to be indicative of dark matter annihilation, but further analysis reveals that millisecond pulsars are more likely to be the source of the emission.
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.
Researchers recorded millimeter-wavelength light from a fiery explosion caused by the merger of a neutron star with another star, confirming it as one of the most energetic short-duration gamma-ray bursts ever observed. The results reveal that the explosion left behind one of the most luminous afterglows on record.
Researchers used magnetoencephalography to study age-related changes in gamma-band oscillations in the auditory cortex of typically developing children. The results showed that power increased with age and cortical localization changed, indicating an age-related shift in the balance between excitation and inhibition.
Astronomers have found that short gamma-ray bursts did not originate as castaways, but instead occurred in distant galaxies up to 10 billion light-years away. The discovery suggests that these events may have been more common in the past than expected and could have seeded the Universe with precious metals.
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.
Researchers have found that gamma delta T cells can be trained to become extreme killers by recognizing abnormal target cells. This discovery has implications for developing novel cellular therapies to treat cancer and infectious diseases.
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.
A team of researchers from Australian National University has found an alternative explanation for the mysterious Galactic Centre Excess, a gamma-ray signal long claimed as a signature of dark matter. The team proposes that the signal may actually come from rapidly-rotating neutron stars, known as millisecond pulsars.