A recent study by NASA's Chandra X-ray Observatory suggests that the sun contains nearly three times more neon than previously believed. This discovery has solved a critical problem with understanding how the sun works. The increased amount of neon plays a crucial role in energy flow from nuclear reactions to space.
A team of astrophysicists discovered X-ray oscillations in a neutron star that provide critical information about its internal structure. The oscillations, generated by massive quakes, contain frequency vibrations that can help scientists understand the nature of neutron stars.
The 'Deep Impact' collision released tens of thousands of tons of material, enough to bury a football field under 30 feet of comet dust. Scientists are analyzing X-ray data to better understand the evaporation process on comets and their interaction with solar wind.
X-ray flashes and gamma-ray bursts, two powerful cosmic explosions, have long been linked in theory. New satellite data, however, suggests that these events may not be as connected as previously thought, contradicting popular theories.
Astronomers observed a binary star system called RX J0806.3+1527, where the white dwarf pair has an estimated mass of one-half the sun and orbits at a rate consistent with gravitational wave predictions. The system is believed to be among the brightest sources of gravitational waves in the galaxy.
Observations of SN 2003jd reveal aspherical explosion, supporting hypothesis that Type Ic supernovae can produce gamma-ray bursts. The findings also suggest that the direction-dependent shape of the oxygen line is a key indicator of an aspherical explosion.
Two astronomers have used NASA's Chandra X-ray Observatory to discover a shell of superheated gas around a dying star in the Milky Way galaxy. The study reveals how material ejected at two million miles per hour can heat previously ejected gas to emit X-rays, providing new insight into the persistence of such gas around dying stars.
A team of astronomers suggests that Type Ic supernovae could produce gamma-ray bursts through the collapsar model, which proposes an asymmetric explosion mechanism and a jet of particles and energy. The theory is supported by observations with Keck and Subaru telescopes in Hawaii.
Researchers analyzed astrolabes from Lahore and found they contained 39-45 weight percent zinc, while European astrolabes had much lower zinc content. The co-melting technique allowed for more precise control over the alloy composition, enabling finer details and more accurate instruments.
A recent study found that chest CT scans are necessary for multiple trauma patients, even if initial X-ray results appear normal. The study analyzed data from 563 patients and revealed that X-rays missed 40% of clinically significant thoracic injuries.
Astronomers have detected a unique visible light component that varies with gamma rays, suggesting a common origin for both. This finding contradicts previous theories and sheds new light on the nature of these powerful cosmic events.
The Chandra X-ray Observatory has observed an X-ray outburst from the highly evolved red giant star Mira A, revealing a bridge of hot matter streaming between it and its companion white dwarf. The detection provides insights into interactions between binary systems, including those with a collapsed star.
Researchers have found that some galaxies and their central black holes underwent a phenomenal growth spurt, setting the stage for the birth of quasars. The study used Chandra X-ray observations to track the growth of supermassive black holes alongside the formation of stars in these galaxies.
The National Science Board has awarded Cornell University a $70 million contract to manage the Arecibo Observatory until March 31, 2010. This renewal will enable further scientific research capabilities at the observatory, with plans to develop new instruments and expand user access.
Astronomers have detected periodic X-ray variations in a galaxy, suggesting a massive black hole with a mass of approximately 10,000 Suns. This finding provides strong evidence for the existence of intermediate-mass black holes, which could bridge the gap between stellar-mass and supermassive black holes.
A new study by University at Buffalo researchers found that panoramic X-rays have limited value and can be used selectively in some cases. The study, which evaluated 1,000 panoramic X-rays, revealed that lesions in sinus cavities, soft tissue of the neck, and upper jaw bone were not always picked up on full-mouth-series X-rays.
A team of astronomers has discovered a remote galaxy cluster that is as massive as several thousand galaxies like our Milky Way and is located 9,000 million light-years away. The cluster contains reddish and elliptical galaxies with old stars, indicating it formed when the Universe was less than one third of its present age.
A team of researchers has discovered a web-like system of gas clouds containing the missing baryons, which are thought to make up half of the universe's mass. The clouds, detected using X-ray telescope data, have temperatures of around 1 million degrees Celsius and are spread over vast distances.
Scientists at Ohio State University and colleagues have discovered a sizeable chunk of the universe's missing baryons, estimated to match the amount that went missing 10 billion years ago. The finding suggests dark matter may be responsible for the gas's presence in super-hot rivers surrounding galaxies.
A new lensless imaging technique has been demonstrated, allowing for direct imaging of ultra-fast changes in the collective behavior of atoms and molecules at the nanoscale. The technique uses coherent X-ray light to achieve 10 times better spatial resolution than current methods.
Researchers found a high concentration of X-ray sources near the Galactic center, suggesting multiple black holes are present. The presence of these black holes is consistent with the theory that stellar-mass black holes can sink toward the center of the galaxy through dynamical friction.
Astronomers discovered a dense stellar graveyard with thousands of X-ray sources within 70 light years of the Milky Way's center. The discovery supports the idea that dynamical friction could create a massive population of stellar-mass black holes.
Astronomers discovered a record-breaking eruption of hot gas and cavities in galaxy cluster MS 0735.6+7421, fueled by a super massive black hole growing at an incredible rate. The event generated energy equivalent to hundreds of millions of gamma-ray bursts.
The Swift X-ray Telescope has successfully captured its first gamma-ray burst afterglow, marking a significant milestone in the mission to understand these mysterious events. The telescope will help scientists pinpoint the location and nature of the explosion, providing crucial clues about the origins of gamma-ray bursts.
Researchers observe enormous cavities surrounding a supermassive black hole, preventing gas from cooling and forming new stars. The discovery sheds light on the universe's structure and supports recent theories about black holes' role in shaping galaxy evolution.
Researchers at Argonne National Lab have developed a new technique using WAXS to study ligand-induced structural changes in proteins, comparable to X-ray crystallography results but faster and cheaper. This method has the potential to identify lead drugs and analyze protein-ligand interactions more efficiently.
Astronomers study remnant of 1,000-year-old supernova to solve long-standing puzzle of cosmic ray origin. They create gamma-ray image using Cherenkov radiation, providing first unequivocal proof that supernovae produce galactic cosmic rays.
Using the Spitzer Space Telescope, Hubble Space Telescope, and Chandra X-ray Observatory, researchers observed the Kepler's supernova remnant, uncovering a bubble-shaped shroud of gas and dust expanding at 4 million miles per hour. The observations revealed distinct features, including heated interstellar dust and regions of hot gas.
Researchers have developed a simpler design for x-ray detectors that offers 30 times better energy resolution than existing detectors, enabling more accurate identification of elements. The new design combines normal and superconducting metals into one layer, reducing fabrication steps and increasing sensor stability.
A study published in the American Journal of Roentgenology found that MRI revealed more extensive fractures in patients with greater trochanteric fractures than X-ray imaging alone. This allowed for better treatment planning and informed decisions on surgical versus nonsurgical treatment.
The Swift satellite will pinpoint the location of distant gamma-ray bursts, studying both the burst and its afterglow. It may uncover new clues about the burst mechanism and provide a bonanza of cosmological data, including information about supermassive black holes.
Astronomers have discovered a new FU-Orionis-type star, which is an extremely young star about the same mass as the sun. The discovery provides insights into the formation of our solar system and allows for the study of X-ray emissions in these stars.
A team of astronomers has discovered hundreds of hidden supermassive black holes in the distant universe, invisible to optical telescopes. The new observations combined data from NASA's Hubble Space Telescope, Chandra X-ray Observatory, and Spitzer Space Telescope, revealing objects that were previously thought to be missing.
Astronomers using the European AVO Virtual Observatory have discovered a whole population of obscured, powerful supermassive black holes in the GOODS survey fields. The team found thirty objects, which they believe were underestimated by a factor of two to five.
Researchers have taken advantage of a newly mounted laser guide star system at UC's Lick Observatory to obtain sharp, twinkle-free images of the faint dusty disks of distant massive stars. The images show that these stars form in the same way as solar-type stars inside a swirling spherical cloud.
The use of high-powered synchrotron X-ray sources and advanced detectors has significantly progressed protein structure calculation. Novel technologies like Energy Recovery Linacs (ERLs) will enable unprecedented brilliance in X-ray beams, opening new avenues for scientific exploration.
A recent study by Dr. Shrawan Kumar found that X-ray technologists experience high levels of back pain and neck strain due to excessive task demands. The constant physical stress compounds the issue, with few professionals beyond 50 years old remaining in the field.
Elves automates X-ray crystallography process, decreasing time to 19 minutes from days or weeks, increasing efficiency of beamlines. The software uses X-ray diffraction data to produce a 3-D layout of proteins, crucial for understanding their function and designing drugs.
Astronomers have discovered two unique rings of dust illuminated by the afterglow of a gamma-ray burst in our galaxy. The rings, caused by dust scattering X-rays from the burst, reveal new insights into the distribution and behavior of dust in the Galaxy.
Research confirms that psychosocial factors significantly influence health outcomes. Studies show how stress levels can overwhelm the body's immune system and increase disease risk. The review emphasizes the importance of understanding psychoendoneuroimmunology to develop effective coping strategies.
A team of LSU researchers is contributing to the largest-ever cosmic-ray experiment, analyzing data from a $100 million facility in Argentina. The project aims to understand the origin and properties of high-energy cosmic rays, which have puzzled scientists for years.
The newly launched San Andreas Fault Observatory at Depth (SAFOD) will provide researchers with tools for continuous monitoring from inside an active earthquake zone. This project is part of the larger EarthScope initiative, which aims to investigate geological forces shaping the North American continent.
Researchers found that recombinant interferons were effective against SARS-CoV replication, with interferon beta showing prophylactic protection and antiviral potential. Interferon alpha was less effective but could be a potential drug of choice in combination with other antiviral drugs.
The $18 million SALT Observatory is nearing completion and will feature the largest optical telescope in the Southern Hemisphere. The observatory's primary scientific instrument, a spectrograph, will break light down into its constituent wavelengths to study stars and galaxies outside of the Milky Way.
Researchers at Argonne National Laboratory have made accurate measurements of waiting-point nuclei masses, confirming theories of how X-ray bursts are produced. The unique ATLAS facility enabled precise determination of the selenium-68 nucleus mass, with a precision 30 times higher than previous measurements.
The ESO team has provided conclusive evidence linking cosmological gamma-ray bursts to hypernova explosions, suggesting a direct connection between the two events. The study uses unprecedented spectral data from the VLT KUEYEN telescope to determine the distance of the burst as approximately 2,650 million light-years.
Researchers at Frankfurt University Medical School have assessed the antiviral potential of five drugs against the SARS coronavirus. Glycyrrhizin, an antiviral agent proven to treat HIV-1 and hepatitis C, is the most active compound in inhibiting replication, with increased nitric oxide synthesis contributing to its effectiveness.
A study by Chandra P. Belani and colleagues found that elderly patients with advanced NSCLC can tolerate combination therapy safely and effectively, with median survival rates comparable to those of younger patients. The treatment regimens used in the study were weekly paclitaxel in combination with full doses of carboplatin.
The XMM-Newton satellite has discovered a faint X-ray glow from a very hot gas in the disk of the Andromeda Galaxy, suggesting recent star formation. Additionally, the team detected an accreting X-ray pulsar, a strongly magnetized neutron star drawing in material from its neighbor.
A team of astronomers at the University of Wisconsin-Madison developed a new optical technique that enables gamma-ray telescopes to quickly identify TeV blazars, reducing identification time from three months to just one day. This breakthrough may provide insight into black hole physics and the origin of cosmic rays.
Researchers propose pathogenic bacteria and viruses could originate from outer space, citing the unusual nature of major epidemics like SARS. The novel virus in SARS has been identified as a possible explanation for its unexpected appearance and global spread.
Researchers have created a new x-ray technique called DEI that enables the visualization of soft tissues such as skin, cartilage, and blood vessels. This technique has potential applications in diagnosis and could enhance mammography and the detection of other soft tissue pathologies.
The North Pole Environmental Observatory project aims to investigate the interplay of ocean currents and other factors related to climate change. The research team has established a temporary camp on sea ice near the North Pole for the third consecutive year to retrieve mooring instruments, insert buoys, and sample Arctic Ocean waters.
Researchers have found evidence of high-speed winds blowing copious amounts of gas from the cores of quasar galaxies, powered by black holes. The winds may regulate black hole growth and create new stars, with a wind transporting substantial amounts of carbon, oxygen, and iron into the interstellar medium.
The SIRTF is designed to peer into deep regions of the universe not visible optically, providing clues to star and galaxy formation. With its infrared spectrograph, it will observe ultrafrigid stars and penetrate obscuring dust in the cosmos.
The University of California, Berkeley's robotic telescope has captured the earliest image of a gamma-ray burst's optical afterglow, offering unprecedented data for theorists to study. The data provides key constraints for physical models of gamma-ray bursts and will help astronomers better understand these enigmatic events.
New research reveals that red giants still exhibit coronal activity, but it is submerged in the chromosphere, a region around 10,000 F. The team used NASA's Chandra X-Ray Observatory and ultraviolet instruments to detect hot coronal gas through UV emissions.
Researchers at Ohio University have discovered a massive X-ray disk in an elliptical galaxy, revealing complex dynamics and challenging previous assumptions about galaxy formation. The giant disk is 90,000 light years wide and spinning through the galaxy, suggesting that elliptical galaxies may not be as simple as previously thought.
Astronomers detected two active black holes at the center of galaxy NGC 6240 using NASA's Chandra X-ray Observatory. The binary black hole system will eventually merge, producing massive gravitational waves detectable by LISA.
Scientists using Whipple Observatory gamma-ray telescope discover energetic gamma-ray flares from active galaxies, revealing relativistic jets and compact emission regions. The study also holds promise to reveal nature of 'dark matter' and 'dark energy', which dominate universe's mass budget.