Researchers at Ural Federal University improved the composition of borate glasses by adding heavy metal oxides, significantly increasing their density. The new glass samples showed good results as radiation shielding material in low and medium energy gamma radiation.
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.
Astronomers have been searching for low-frequency gravitational waves by monitoring pulsar pulses, but now NASA's Fermi Gamma-ray Space Telescope can also be used to detect these waves. The satellite's high-energy light provides a clearer view of pulsars and offers an independent method to detect gravitational waves.
Astronomers used over a decade of Fermi data to search for signs of long gravitational waves from supermassive black hole pairs. Although no waves were detected, the analysis shows that with more observations, these waves may be within Fermi's reach.
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.
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.
A U-M study defines how a cytokine and fatty acid combination triggers ferroptosis, a type of cell death previously studied with synthetic molecules. This natural mechanism could make immunotherapy treatments more effective, particularly for cancers where the treatments currently work for only about 30% of patients.
Researchers at GIST demonstrate that ultrasound pulses can reduce β-amyloid plaque concentration and tau protein levels in AD-model mice, suggesting a promising non-invasive therapeutic strategy. The treatment also improves brain connectivity without causing harm to brain tissue.
A team of researchers led by Alexis Andrés analyzed 15 years' worth of data from NASA's Swift Observatory to find that Sagittarius A*, the black hole at the center of the Milky Way, flares irregularly both day-to-day and in the long term.
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.
Researchers found that EEG arousal intensity varies by respiratory event type and severity in OSA, affecting sleep disruption. The study reveals distinct patterns of gamma power during arousals from different types of respiratory events, such as obstructive apnoeas and hypopnoeas with varying degrees of blood oxygen desaturation.
Researchers from Hefei Institutes of Physical Science have developed a lead-free composite shielding material with high shielding properties. The modified-gadolinium oxide/boron carbide/high density polyethylene composite shows excellent performance in shielding both neutrons and gamma rays.
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.
A new study reveals that gamma delta T cells play a critical role in promoting clinical protection against malaria. The unique T cell receptor on these cells enables them to recognize and tolerate Plasmodium falciparum parasite fragments, providing a vital component of an effective immune response.
Researchers detected gamma rays from ultra-fast outflows (UFOs) launched by supermassive black holes, providing a basis for understanding their role in regulating black hole growth and galaxy evolution. UFOs create shock waves that accelerate charged particles, influencing the surrounding matter and accelerating star formation.
Researchers found that combining thiazolidinediones with histone deacetylase inhibitors elicits robust anti-tumor responses in preclinical models of triple-negative and endocrine-refractory breast cancers. Higher levels of PPAR-gamma were associated with better prognosis.
Researchers at Technical University of Munich have developed a new X-ray method for respiratory diagnostics using dark-field chest imaging, allowing for early detection and treatment follow-up of respiratory ailments. The technology reduces radiation dose by a factor of fifty compared to traditional computed tomography.
A team of astronomers used LAMOST observations to classify hundreds of unidentified gamma-ray sources as blazars. The study provides insight into the nature of these sources and their potential counterparts in active galaxies.
Researchers propose that low-activity supermassive black holes are major factories of high-energy cosmic particles. They can generate gamma rays in the megaelectron volt range through plasma heating and accelerate protons to energies thousands of times higher than the Large Hadron Collider.
Researchers from Australian National University confirm that star-forming galaxies are responsible for creating gamma-rays that had been puzzling astronomers. The discovery sheds light on the origins of these mysterious emissions and could provide clues to understanding Dark Matter.
Recent studies suggest that cosmic rays, originating from supernova remnants and pulsars, have a significant impact on galactic dynamics and star formation. The streaming instability triggered by cosmic rays in the interstellar medium can create plasma waves that heat and scatter gas, influencing the formation of planets and stars.
Researchers use X-rays to activate opsins in neurons, allowing for remote control of neural function and behavior. Scintillators emit visible light in response to X-ray irradiation, enabling the technique without tissue damage.
Astronomers have discovered a 0.6-second gamma-ray burst caused by the implosion of a massive star, revealing that some short GRBs might be imposters in disguise. The discovery suggests that most collapsing stars fail to produce a GRB jet, making this event an effective fizzle.
A research team at VIB-KU Leuven discovered the early assembly of gamma-secretase, a protein complex involved in plaque production and linked to Alzheimer's disease. The 'buckle up' mechanism prevents premature assembly and activity, allowing for precise regulation of gamma-secretase activity.
Cosmic rays play a critical role in the final stages of supernovae explosions, allowing for a bigger impact on surrounding interstellar gas. The study suggests that these particles can give an extra push to the gas, increasing momentum by up to 4-6 times.
Researchers have developed glasses with improved radiation protection characteristics using bismuth borate materials. The new samples show better performance than commercial analogs and could provide a safer alternative to lead-based glasses.
Researchers predicted gamma ray bursts from a nearby magnetar and confirmed their prediction, showing periodic windowed behavior. The pattern of bursts was found to be periodic, but not perfectly regular, adding to the mystery of how magnetars produce radio and gamma ray bursts.
Researchers have solved a decades-old mystery as to how Jupiter produces spectacular bursts of X-rays every few minutes. The X-rays are triggered by periodic vibrations of Jupiter's magnetic field lines, creating waves of plasma that send charged particles towards the planet's atmosphere.
A University of Pennsylvania-led study found that protein actin's nucleotide sequences, not amino acid sequences, govern its functions in cells. The faster translation rate of beta-actin mRNA causes it to attach to substrates more strongly, slowing down cell movement.
Gamma-cyclodextrin, a widely used compound in manufacturing, has been made more accessible and environmentally friendly through a new process using light-sensitive hydrazone. This process reduces energy consumption and cost, making the compound cheaper and more available for use in various consumer products.
A new study suggests that carbon, oxygen, and hydrogen cosmic rays travel through the galaxy toward Earth in a similar way, but iron arrives differently. Scientists believe this could indicate unique sources or propagation methods for different elements.
Researchers found that vaccination with an mRNA vaccine induces antibody responses that would protect humans from infection with the gamma/P.1 variant, while hamsters previously infected with earlier strains were also protected nine months later. Previous SARS-CoV-2 infection and vaccines based on earlier strains still provide protecti...
A team of UK scientists has confirmed a decades-long theoretical prediction about gamma-ray bursts. They measured the magnetic field in a far-off Gamma-Ray Burst and found it was scrambled after the ejected material crashed into, and shocked, the surrounding medium. This discovery sheds new light on these extreme cosmic blasts.
Researchers discovered weaker gamma brain waves in people with mild cognitive impairment or Alzheimer's disease compared to healthy peers. This finding suggests a potential new way to diagnose these conditions and may lead to earlier intervention.
Astronomers used High Energy Stereoscopic System to observe gamma ray burst GRB 190829A's afterglow, detecting emission at several tera-electronvolts. The results show similar spectral properties and decay profiles to x-ray emission, contradicting current emission models for gamma ray bursts.
Scientists have recorded the most energetic radiation and longest gamma-ray afterglow of a gamma-ray burst, revealing similar spectral characteristics between X-ray and very-high energy gamma-rays. This challenge to established theory highlights the need for further studies of very-high energy GRB afterglow emission.
Researchers at Skolkovo Institute of Science and Technology used the Zhores supercomputer to develop a new method for generating gamma-ray combs, which are essential for nuclear spectroscopy and medicine. The method uses polarization-gated pulses to reduce ponderomotive spectral broadening, allowing for high-brightness gamma-ray sources.
The LHAASO observatory detected 12 Ultra-high Energy gamma-ray sources, prompting the presence of active or recent PeVatrons. The team identified possible candidates, including pulsar wind nebulae and supernova remnants.
A team of researchers from the University of Notre Dame developed a simulation model to better understand cosmic ray transport characteristics and improve detection techniques.
Researchers at KTH Royal Institute of Technology unveiled a new scanning technology that can detect small amounts of nuclear materials in airports and seaports. The Neutron-Gamma Emission Tomography (NGET) system can pinpoint the origin of neutron and gamma ray emissions from weapons-grade plutonium and other special nuclear materials.
A $1.2 million NSF EPSCoR grant will establish a new faculty position, support postdoctoral researchers and graduate students, and fund work on neutrino detection at IceCube and RNO-G observatories. The research aims to improve calibration of massive instruments and develop advanced data analysis techniques.
LHAASO's discovery opens up an era for UHE gamma astronomy, prompting scientists to rethink high-energy particle acceleration and propagation mechanisms. The observatory detected 12 stable gamma ray sources with energies up to 1 PeV, revealing the Milky Way is full of PeVatrons.
Analysis of data from a lightning mapper and radiation detector revealed neutrons generated from soil by large cosmic-ray showers, matching simulations that included both hadrons and gamma rays. This discovery suggests natural phenomena producing ground-pointed gamma-rays could produce similar neutron burst signatures.
Researchers developed a new x-ray optics-on-a-chip device that can modulate X-rays at speeds up to 100 times faster than conventional devices. The tiny device, weighing just 3 micrograms, has the potential to capture fast chemical, material and biological processes.
Researchers have made significant progress in understanding the stellar beta-decay rate of 59Fe, which is essential for predicting the yield of 60Fe in massive stars. By measuring this rate, they eliminated a major nuclear uncertainty and found that the yield of 60Fe is 40% less than previously predicted.
Researchers detect first evidence of ultrahigh-energy gamma rays spread across the Milky Way, providing proof of cosmic ray superaccelerators. The discovery confirms the existence of PeVatrons and opens new avenues for understanding cosmic ray origins.
Researchers developed an AI model to detect COVID-19 in chest X-rays with high accuracy, using a large dataset of other X-ray images as a starting point. The tool has the potential to assist doctors in identifying, measuring the severity and classifying the disease.
The HAWC Gamma Ray Observatory has discovered the origin of the highest-energy cosmic rays in the galaxy, which are traced to the Cygnus OB2 star-forming region. This breakthrough resolves a long-standing question in astrophysics and sheds light on the mechanisms that accelerate these particles to petaelectronVolt energies.
A combined treatment of irradiation and essential oil vapors effectively destroys insects, bacteria and mold in stored grains. The addition of eucalyptus and tea tree essential oils improves effectiveness.
The Tibet ASgamma experiment has discovered gamma rays beyond 100 TeV from a supernova remnant, suggesting that cosmic-ray nuclei are accelerated up to PeV energy and collide with a nearby molecular cloud. This discovery identifies the first candidate object in the Milky Way that can accelerate cosmic rays up to 1 PeV.
The new technology streamlines creation of radiation treatment plans for brain tumors and other diseases, reducing time from 1.5-3 hours to just one minute while maintaining accuracy. This frees medical professionals to focus on patient care and improving outcomes.
A multiyear study by Florida Atlantic University found striking differences in travel patterns between the Atlantic and Gulf coasts of Florida. The majority of Gulf coast whitespotted eagle rays exhibited migratory behaviors, while most Atlantic coast rays remained residents within the Indian River Lagoon.
Scientists observed disulphide bridge formation in ribosomal exit tunnel during protein synthesis, challenging previous assumptions. The discovery sheds new light on the causes of lens opacities and cataracts, a leading cause of vision loss worldwide.
Researchers at the University of Göttingen have created a novel approach for generating X-rays by utilizing a thin layer structure with varying electron densities. This 'sandwich structure' enables focused X-ray beams to be directed in a specific direction, overcoming the challenges of traditional X-ray tube methods.
Researchers discovered that gamma-delta T cells require glucose to eliminate tumor cells but consume cholesterol, promoting pro-tumor functions. This dichotomy in energy resources has implications for cancer immunotherapy and diet's impact on its effectiveness.
Scientists discovered a rare magnetar in the Sculptor constellation as the source of giant gamma-ray burst GRB 200415A. The burst was powerful enough to disrupt mobile phone reception and shed light on the universe's early history.
Astronomers have detected a signature of magnetar outbursts in nearby galaxies, allowing for more precise localization and study of these extreme stars. The discovery provides new insights into the behavior of magnetars, which are thought to be the source of some types of short gamma-ray bursts.
Researchers at RIKEN Center for Biosystems Dynamics Research use electric rays and sting rays to create maps of the seabed, collecting data on ocean wildlife and resources. The method is cost-effective and has been shown to be accurate, with positioning errors within 10cm of existing seabed maps.
Researchers at EPFL have developed a perovskite material that can detect gamma rays with high efficiency, meeting the requirements for simple, reliable, and cheap detectors. The material, made of methylammonium lead tribromide crystals, shows high clarity and can be grown from abundant and low-cost raw materials.
Recent study reveals astrocytes modulate balance of inhibition/excitation in neural networks controlling decision-making. Astrocyte activation improves cognitive performance and regulates gamma oscillations involved in perception, working memory, and other cognitive functions.