Researchers have identified a population of globular star clusters drifting freely through the vast expanse of intergalactic space, revealing insights into the origins of these ancient structures. The discovery is thought to be the result of galaxy collisions or gravitational pulls that tore these star clusters from their parent galaxies.
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.
Researchers are conducting clinical trials at a new MIT facility dedicated to neutron capture therapy (NCT), which has shown promise in reducing damage to healthy tissues. The treatment involves administering a compound containing boron-10, followed by irradiation with epithermal neutrons, killing tumor cells while sparing healthy ones.
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.
Researchers have spotted a spectacular 'bull's eye' effect in a star explosion, revealing new insights into the object's distance and characteristics. The discovery, led by Howard Bond of the Space Telescope Science Institute, used NASA Hubble Space Telescope images to calculate the star's distance from Earth at least 20,000 light years.
Researchers detected a sudden cooling of the star Rho Cassiopeiae in 2000, resulting in an unprecedented mass ejection into space. The star is now considered one of the brightest yellow hypergiants in the Milky Way, with a luminosity over half a million times that of the Sun.
Astronomers have identified a new type of star in a compact binary system, exhibiting properties similar to brown dwarf stars. The discovery sheds light on the formation and evolution of extra-solar planets, which are often found close to their host stars.
Researchers developed a tiny, portable neutron detector using a small wafer that can detect neutron signals from hidden nuclear weapons and materials. The device operates at minimal voltage and is cost-effective, making it a potential game-changer in detecting weapons of mass destruction.
New theory explains why circumstellar Keplerian disks are stable around Be stars, contradicting previous model's predictions. The Magnetically Torqued Disk model suggests a narrow range of star types can form detectable disks.
A team of international astronomers has identified an ancient star in the Milky Way Galaxy, dated to 14-15 billion years ago. The discovery provides direct knowledge of the elemental composition of the universe shortly after the Big Bang, offering insights into the formation of stars and the chemical recipe of the early universe.
Researchers tracked a star's orbit around a suspected black hole in the Milky Way, revealing its massive gravitational pull. The observation provides key evidence for the existence of a supermassive black hole at the galaxy's center.
A team of astronomers has discovered a planet-shaped 'wake' around the nearby star Fomalhaut, suggesting the presence of an orbiting giant planet. The observation was made using the SCUBA camera, which operates in the submillimetre region of the electromagnetic spectrum.
The discovery of a Jupiter-like planet and the smallest known planet outside the solar system offers hope for finding life beyond Earth. The newly found planet orbits 55 Cancri at nearly the same distance as Jupiter orbits our sun, making it a near analog to our own solar system.
Scientists have discovered gold in an ancient star located 2,500 light years from Earth, providing significant insights into the formation of elements and the age of the Milky Way galaxy. The discovery was made using the Hubble Space Telescope and Keck Telescope, revealing the presence of other elements including thorium and uranium.
The discovery provides the first evidence that planets at earthlike distances can survive the evolution of their host star into a giant. The planet orbits iota Draconis, an old star with a radius 13 times that of the sun, and has an elliptical orbit that takes 1.5 years to complete.
Researchers from Ohio State University have successfully measured the mass of a gravitational microlens in a dim binary star system 6,500 light-years away. This technique could be used to detect dark matter within our galaxy and help explain the missing mass of the universe.
A team of astronomers has discovered a Jupiter-size planet in a nearly circular orbit around the nearby star 47 Ursae Majoris, located about 51 light years from Earth. The new planet is at least three-fourths the mass of Jupiter and orbits the star at a distance that would place it beyond Mars but within the orbit of Jupiter.
Researchers using the VLA radio telescope found a pulsar that is at least 40,000 years old and may be as old as 170,000 years. This discovery challenges current understanding of neutron stars and their ages.
Researchers propose two theories to explain the origin of neutron star kicks: the 'mass rocket,' which suggests a mass ejection asymmetry, and the 'neutrino rocket,' which relies on the intense magnetic field surrounding the newly formed neutron star. These theories aim to explain the observed high speeds of pulsars and the asymmetrica...
Researchers have observed an 'earthquake' in a slow-spinning, highly magnetic collapsed star, confirming it as a neutron star. The finding supports the magnetar hypothesis and provides strong evidence for the existence of these rare objects.
Researchers at Sandia National Laboratories' Z machine create temperatures rivaling the Sun's to study iron in black holes and neutron stars. The experiments help astronomers interpret images from the Chandra X-ray observatory, shedding light on the universe's evolution and eventual expiration.
A powerful numerical simulation reveals that gravitational waves from merging neutron stars can be detected by highly specialized detectors. The simulation, which included relativistic radiation reactions, showed tidal arms forming during the merger, significantly altering the dynamics and energy of the event.
Astronomers used numerical cosmology to study the earliest structures that formed in the universe, finding tiny star clusters containing 1,000-10,000 solar masses. These early clusters were likely the 'spark plugs' that started the formation of galaxies.
Ohio University researchers are producing precise measurements of neutron direction and speed to develop a new cancer treatment. This technology could lead to fewer side effects and more effective treatment options for patients.
Astronomers have discovered a large number of slow X-ray pulsars in supernova remnants, which are believed to be neutron stars with huge magnetic fields. These so-called magnetars rotate much slower than expected and are invisible to radio probes.
A new pulsar has been discovered orbiting a massive star, providing insights into the mysterious behavior of transient objects. The pulsar, named XTE J1946+274 or GRO J1944+26, exhibits complex orbital patterns and intense magnetic fields, challenging our understanding of these enigmatic celestial bodies.
A rapidly spinning neutron star can naturally produce a Gamma-ray burst by oscillating and radiating its rotation energy. The spin-down process is triggered by the gravitational wave instability, which grows explosively in hours or minutes, strengthening the magnetic field and eventually radiating away all remaining rotation energy.
Astronomers detect powerful gamma rays from SGR 1900+14, confirming the existence of magnetars and linking three mysteries: what are Soft Gamma Repeaters (SGRs) and Anomalous X-ray Pulsars (AXPs)? The discovery provides insights into neutron star behavior and suggests a million old magnetars might be drifting through the Galaxy
A rapidly spinning neutron star, SAX J1808.4-3658, is providing proof for the theory that millisecond pulsars are propelled to mind-boggling speeds by accretion of material from a companion star. This discovery fills an important niche in our understanding of star evolution.
Researchers used neutron tunneling to study magnetic properties of thin iron films, discovering a sensitive tool for exploring surfaces. The phenomenon shows promise for studying subtle magnetic phenomena in technological materials.
Researchers have created star polymer gels with potential applications in delivering high concentrations of drugs to specific areas in the body, such as tumors. These gels can also recognize and remove substances like cholesterol from the blood through a process called molecular imprinting.
Cornell University astronomers James Cordes and Barney Rickett have developed a method to calculate the speed and distance of extremely fast-moving neutron stars, called pulsars, by analyzing their twinkling rate. By combining data from two large radio telescopes, they can identify new pulsars and better understand their physics.
Astrophysicists have discovered rapid oscillations in neutron star brightness, which may confirm a unique effect of curved space-time predicted by Einstein's theory. The data was obtained using NASA's Rossi X-Ray Timing Explorer satellite.
A NASA scientist has found a new puzzle in the sky, an X-ray pulsar that appears to burst twice every 'year' rather than once. Colleen Wilson discovered GRO J2058+42, which has no visible component and exhibits unusual behavior, suggesting it may be a binary star system with a type Be star and a neutron star in a lopsided orbit.
Researchers outline three unique features that may distinguish strange stars from neutron stars, including higher X-ray energy and pulse emissions. The discovery of a strange star could prove the existence of quark matter, a form of matter made up of quarks.
Researchers have detected unusual light patterns from faint stars in a globular cluster, suggesting catastrophic star interactions. The study's findings reveal that these clusters are regions of intense stellar activity, with stars locked in orbital duets that can prevent core collapse into black holes.
Researchers calculate neutron star's mass by measuring X-ray pulses from innermost orbit, revealing a massive star about twice the sun's mass. The findings provide new insights into the birth and evolution of neutron stars.
A University of Illinois professor has modeled gravitomagnetic induction as the gravitational analog of Faraday induction in electromagnetism. The effect could influence a neutron star's spin, internal structure and orbital motion.
Astronomers have discovered a binary system featuring a dead white dwarf star orbiting an exotic neutron star with a mass 1.5 times that of the Sun. The neutron star's intense gravity is slowly consuming its companion, causing peaks in ultraviolet radiation every 11 minutes.
A new planet has been discovered around the star 16 Cygni B with an orbital eccentricity of 0.6, unlike any other known planet in our Solar System. This extreme oblong shape indicates the planet experiences significant variations in heat energy as it orbits its host star.