Researchers have found a new source of high-energy photons in the cosmos: a microquasar located in our galaxy. The gamma rays emitted by this system are among the most energetic ever observed and were detected using the High-Altitude Water Cherenkov Gamma-Ray Observatory.
Scientists have detected gamma rays coming from the outermost regions of SS 433, a black hole system in our galaxy. The High-Altitude Water Cherenkov Gamma-Ray Observatory (HAWC) has observed these high-energy signals, which suggest electron acceleration and collisions at the ends of microquasar jets produced them.
Researchers studied manta ray filtration using physical modeling and CFD, discovering a novel non-clogging mechanism that resists clogging. The 'ricochet' separation process allows water to pass through while tiny particles are eaten, promising applications for industrial wastewater treatment and reducing microplastic pollution.
Researchers at Oregon State University discovered a novel filtering mechanism in manta rays that could improve commercial applications. Manta rays filter zooplankton and microcrustaceans using arrays of leaf-like lobes, allowing them to retain smaller particles while avoiding clogging.
Researchers used the Murchison Widefield Array to observe radiation from cosmic rays in two neighboring galaxies, detecting areas of star formation and remnants from past supernovae. The study provides insights into the rate of star formation in these galaxies, shedding light on their unique features.
Cownose rays migrate along the Atlantic coast, with most returning to the same regions each summer. The study provides critical insights into conservation efforts, as intense fishing could wipe out genetic diversity in Chesapeake Bay populations.
The GRAINE collaboration launched a balloon-borne nuclear emulsion telescope to observe high-energy cosmic gamma rays. The experiment successfully completed a record-long flight of 17 hours and achieved high-resolution observations, marking a significant milestone in the field of cosmic gamma-ray research.
Dr. Frank Schröder will search for high-energy photons accompanying cosmic rays using a novel radio measurement technique. He aims to find the highest-energy photons ever measured at an Antarctic location.
Astronomers using NASA's NuSTAR satellite have revealed that binary star system Eta Carinae is capable of creating cosmic rays. The team observed the system and found evidence of a collision between the two stars' stellar winds, which forms shock waves and accelerates particles to nearly the speed of light.
Scientists use X-ray polarimetry to determine the shape of matter near a black hole in binary system Cygnus X-1, clarifying the lamp-post model as the correct geometry. This discovery may help understand the evolution of black holes and galaxies.
Researchers at UMD developed an alert system that enabled telescopes worldwide to pinpoint the source of high-energy cosmic neutrinos. The evidence points to a supermassive black hole, dubbed a blazar, as the most likely accelerator of these particles.
The VERITAS array confirmed detection of gamma rays from a supermassive black hole, potentially the first astrophysical source of high-energy cosmic neutrinos. This discovery may shed light on the acceleration mechanisms that create cosmic rays.
The VERITAS array has confirmed the detection of high-energy gamma rays from a supermassive black hole located in a distant galaxy, TXS 0506+056. This detection is significant as it provides evidence that nearby and faraway galaxies with supermassive blackholes at their centers are actively creating high-energy cosmic rays.
Researchers discovered a llama-derived nanobody that specifically targets G beta-gamma signaling, preventing it from activating several other signaling proteins. This approach may provide control over multiple GPCRs and avoid undesired cellular events.
A new approach uses machine learning to generate computer-generated X-rays to supplement real images, increasing the size of training sets for AI systems. This method improves classification accuracy for common and rare conditions by up to 40%, overcoming a challenge in applying artificial intelligence to medicine.
The study using data from NASA's NuSTAR space telescope reveals that Eta Carinae accelerates particles to high energies, some of which may reach Earth as cosmic rays. The team's analysis suggests that the accelerated electrons and other particles are ejected in violent shock waves along the boundary of the colliding stellar winds.
Researchers confirmed that last fall's union of two neutron stars caused a short gamma-ray burst, revealing a key relationship between binary neutron star mergers, gravitational waves and GRBs. Short gamma-ray bursts are the universe's most powerful electromagnetic events.
Researchers observed a downward beam of positrons in Hurricane Patricia's eyewall, creating powerful gamma-rays and x-rays. The detection confirms a theoretical prediction made years earlier, suggesting TGFs can be detected via the reverse positron beam using ground-based instruments.
A team led by the University of Utah has observed lightning-triggered gamma-rays in more detail than ever before, detecting 10 bursts of downward terrestrial gamma ray flashes between 2014 and 2016. The study provides a major advance in understanding the production mechanism of these rare and high-energy radiation events.
Researchers have developed a new method for generating fast X-rays using standard laboratory lasers, allowing them to image the movement of electrons in organic materials. This breakthrough enables the study of extreme reaction steps and could lead to improved solar cells and catalysts.
A Northwestern University research team has developed a new semiconductor device that can detect gamma rays and identify radioactive isotopes at room temperature. The device, made of cesium lead bromide, offers high spectral resolution and can be scaled up for widespread use in biomedical imaging, astronomy, and spectroscopy.
Researchers create glycine, an essential amino acid, from simple molecules in a laboratory experiment that mimics astrophysical conditions. The study suggests that the combination of star dust and radiation could have formed life's building blocks in space, leading to their arrival on Earth via comet or meteorite impact.
New research finds a positive link between BMI and DNA damage in BRCA mutation carriers. Obesity is associated with higher levels of gamma-H2AX foci, indicating increased DNA damage.
A team of researchers has developed a novel reaction to insert nitrogen into C-H bonds, creating useful ring-shaped molecules. The breakthrough synthesis uses inexpensive feedstock hydrocarbons as substrates, offering a new solution to the long-standing challenge in pharmaceutical and chemical industries.
Researchers create conditions to test theoretical nuclear effect, capturing excited nuclei and gamma rays for the first time. This advance may improve understanding of star formation and creation of star elements.
A major study found a significant increase in the number of X-rays given to patients when dentists were paid on a 'fee-for-service' basis, compared to fixed salaries. This increase was most pronounced when patients were exempt from charges.
A team of researchers, led by Dr Gianluca Sarri from Queen's University Belfast, has created the first small-scale replica of a gamma ray burst in a laboratory. The experiment used the Gemini laser to produce a mini gamma ray burst, confirming current models' predictions for magnetic field generation and gamma-ray emission.
A new theoretical model reveals that these particles originate from accelerated cosmic rays via powerful black-hole jets. The model explains the similar energies of the particles by suggesting they inherit energy from their parent particles.
Scientists launched four rockets from Alaska to measure x-ray emissions, determine the impact of water on the upper atmosphere, and form Polar Mesospheric clouds. One rocket studied diffuse X-rays from space, while another investigated the formation and dynamics of PMCs.
The collision produced gravitational waves and detected radio waves, which led to the discovery of a 'cocoon', a broader outflow of radio-emitting material, rather than a fast-moving jet. This finding provides more insight into short gamma-ray bursts.
The Lomonosov satellite detected air showers caused by high-energy space rays and registered transient light phenomena associated with storm ares. The satellite also observed gamma-ray bursts for the first time in history, allowing for simultaneous measurements in optic and gamma ranges.
Researchers at the University of Helsinki designed an instrument that can detect and identify explosive materials in unexploded artillery shells using prompt gamma neutron activation analysis. The instrument achieves a precision better than 1% within 30 minutes, allowing for non-destructive detection.
A team of Japanese researchers from Kyoto University used gamma-ray detectors to study the effects of lightning on atmospheric elements. They found that lightning emits positrons, a form of antimatter equivalent to electrons, through interactions with nitrogen and other elements in the atmosphere.
Researchers analyzing data from the HAWC gamma-ray observatory suggest that excess positrons may originate from dark matter annihilation or decay. The study's findings indicate that positrons generated by nearby pulsars cannot reach Earth, leading to the conclusion of an exotic origin.
Researchers used the HAWC Observatory to study two nearby pulsars, Geminga and PSR B0656+14, which produced high-energy positrons in cosmic rays. The analysis found that while pulsar radiation contributed some positrons, it was not enough to explain the excess.
Researchers produced high-energy photon beams using a new method, exceeding known limits and paving the way for deeper understanding of atomic nuclei. The discovery has potential applications in future large-scale laser facilities and could lead to new sources of energy.
The collision of neutron stars has been observed directly for the first time, confirming a key aspect of Albert Einstein's General Relativity theory. The detection, made possible by a global research collaboration, reveals that gravitational waves and gamma ray bursts are produced during these collisions.
The Los Alamos team used supercomputers to analyze gravitational wave data from a neutron star merger, confirming the formation of heavy elements beyond iron. The observation also provided the first direct detection of gravitational waves in gamma rays, confirming Einstein's prediction.
Scientists directly observed two neutron stars for the first time, detecting gravitational waves and a burst of gamma rays. The event allowed researchers to calculate the expansion rate of the universe and verify Einstein's prediction that gravitational waves travel at the speed of light.
Researchers confirm neutron star collision using electromagnetic radiation detected by NASA's Swift Gamma Ray Burst Explorer. The event provided a complete picture of compact object mergers, marking a major breakthrough in astronomy.
Researchers observe historic detection of neutron star merger in both gravitational waves and the entire spectrum of light, offering insights into a cosmic event. The merger, named GW170817, revealed properties of the dense neutron stars and their collision, providing new opportunities for gravitational testing.
Three GW astrophysicists contribute to global effort identifying kilonova explosion, a rare event roughly 1,000 times brighter than a nova. The discovery confirms predictions of gravitational waves and electromagnetic radiation from neutron-star mergers, providing insights into the formation and expansion of our universe.
Scientists at Oregon State University predicted a short gamma-ray burst detection, which was confirmed just a month later. The OSU team predicted the event based on their understanding of binary neutron star systems and gravitational waves.
The LIGO detector has confirmed a 1989 prediction made by Prof. Tsvi Piran that neutron star mergers produce gamma-ray bursts and synthesize heavy elements like gold and uranium. This confirmation solves several puzzles in astronomy and opens new ways to understand the universe.
The Pierre Auger Observatory detects a large-scale anisotropy in the arrival directions of cosmic rays above 8×10^18 eV, indicating their extragalactic origin. Researchers believe the source region may be located near the Milky Way galaxy.
Researchers used robotic telescope MASTER-IAC to observe gamma ray burst GRB160625B, revealing that a strong magnetic field controls the jets at first, then matter takes control. The study suggests that both factors play a basic role in the formation of black holes and gamma ray bursts.
A decade-long study by the Pierre Auger Collaboration has found six percent greater rate of extragalactic cosmic rays from one side of sky than other, suggesting acceleration sites are outside Milky Way. The observatory's detection provides compelling evidence for extragalactic origin of ultra-high energy cosmic particles.
Research detects 30,000 high-energy particles with energies a million times greater than the LHC, finding that flux from certain regions of the sky is approximately 6% higher than uniform, indicating an extragalactic origin. The Pierre Auger Observatory detects these particles and analyzes their arrival directions.
A study published in Science confirms that the highest energy cosmic rays bombard the Earth come from outside the Milky Way Galaxy. The Pierre Auger Observatory collected data from 12 years, revealing an anisotropy in the distribution of arrival directions of cosmic particles.
A new study reveals that ultra-high-energy cosmic rays come from galaxies far beyond our own Milky Way galaxy. The Pierre Auger Observatory's data analysis shows that these particles favor a specific direction, suggesting an extragalactic origin.
The Pierre Auger Collaboration has discovered an anisotropy in the arrival directions of cosmic rays above 8 × 10^18 eV, indicating extragalactic origin. This discovery sheds light on the nature of cosmic rays and their possible sources, with further studies underway to pinpoint the locations.
Children's National Hospital implemented a quality-improvement initiative that reduces the number of unintended extubations in newborns, leading to significant savings. By limiting daily chest X-rays to twice a week, the hospital was able to reduce unplanned extubations and lower costs by $1.6 million annually.
Scientists have identified where laminin 511 interacts with integrins, crucial adhesion molecules that determine cell function and shape. The discovery reveals the gamma chain directly interacts with integrins, stabilizing the laminin-integrin bond.
Astronomers have identified a millisecond pulsar spinning at more than 42,000 revolutions per minute using the Netherlands-based Low Frequency Array (LOFAR) radio telescope. The discovery provides insights into the potential for finding ultra-fast pulsars and raises questions about the fastest-spinning pulsars in the universe.
A new study reveals that electromagnetic radiation from the Crab Nebula may originate in a single population of electrons, challenging traditional models. This suggests that a different acceleration process is needed to explain the entire electromagnetic spectrum.
A team of UChicago scientists have detected X-ray photons from a type Ia supernova for the first time, indicating dense circumstellar material. The finding challenges current understanding of these explosions and raises questions about their formation.
A team of Russian and Chinese scientists has developed a model explaining the nature of high-energy cosmic rays in our Galaxy, focusing on Fermi bubbles. They propose that giant shock fronts can re-accelerate protons to energies exceeding 1015 eV, producing the observed CR spectrum above the 'knee'.
The ISS-CREAM mission will study cosmic rays at energies above 1 billion electron volts, shedding light on their origins and properties. The experiment aims to measure the highest-energy particles yet detected in space, providing unparalleled insights into the interstellar neighborhood.
The ISS-CREAM experiment aims to study the origin and diversity of cosmic rays, potentially revealing new details about dark matter. By detecting primary particles, ISS-CREAM will extend measurements to the highest energies possible and increase exposure by an order of magnitude.
A team of scientists from the Lomonosov Moscow State University has successfully detected polarization of intrinsic optical radiation of a gamma-ray burst, providing evidence of a powerful magnetic field around a rapidly rotating black hole. This achievement marks a major breakthrough in understanding these cosmic events.