Articles tagged with Neutron Stars
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A team of astronomers used multiple NSF NOIRLab facilities, including Gemini and Blanco telescopes, to study the longest gamma-ray burst ever witnessed. Analysis revealed that the event likely originated from a relativistic jet crashing into the surrounding material in a massive, extremely dusty galaxy.
Researchers found that neutrino flavor transformations alter the composition and signals of what's left after a neutron star collision, impacting the creation of heavy metals and rare earth elements. The simulations also influenced the matter ejected from the merger and electromagnetic emissions detectable from Earth.
The XRISM mission reveals an unexpected difference between winds launching from a disc around a neutron star and those from material circling supermassive black holes. The surprisingly dense wind blowing from the stellar system challenges our understanding of how such winds form and drive change in their surroundings.
Astronomers discovered a greedy white dwarf star consuming its closest celestial companion at an unprecedented rate. The study found that the super-dense white dwarf is burning brightly due to the mass transfer between the two stars, potentially leading to a massive explosion visible from Earth.
A team of researchers has proposed that massive star collapse can create a 'neutrino collider,' leading to dramatic changes in supernova outcomes. This process could produce a neutron core or even a black hole remnant, depending on the presence of secret neutrino interactions.
Researchers discovered that magnetar flares can produce the universe's heaviest elements, including gold and platinum. The discovery resolves a decades-long mystery concerning a bright flash of light and particles spotted by a space telescope in 2004.
A new study finds that a millisecond magnetar could have triggered the flashes of GRB 230307A, an extremely bright GRB detected in March 2023. The observation suggests that the magnetar model is consistent with the features of the prompt emission and the long-lasting X-ray plateau.
Ryan Amberger, a Ph.D. candidate in physics at Texas A&M University, has been selected for a 2025 Los Alamos-Texas A&M Fellowship to conduct dissertation research on nuclear astrophysics. He aims to improve understanding of the s-process by studying neutron cross sections.
Physicists have measured a nuclear reaction that can occur in neutron star collisions, providing direct experimental data for a process previously only theorized. The study provides new insight into how the universe's heaviest elements are forged, with potential applications in nuclear reactor physics.
The StarBurst Multimessenger Pioneer will detect short-duration bursts of gamma-rays from neutron star mergers, providing fundamental insight into these extreme explosions. With an effective area four times greater than the Fermi Gamma-ray Burst Monitor, it will increase the detection rate of EM counterparts to NS mergers.
The Einstein Probe mission aims to probe X-ray transient sources and explosive astrophysical phenomena, contributing significantly to astronomical research. The mission's sophisticated observational instruments will enhance the detection of sudden X-ray transients and monitor variability in known celestial sources.
A new machine learning algorithm can fully characterize systems of merging neutron stars in under a second, compared to traditional methods which take around an hour. This allows for rapid localization of the source and pointing of telescopes towards the merging neutron stars.
Researchers found a remarkable X-ray flash in archived Chandra Observatory data, hinting at possible explanations: X-ray burst, magnetar flare, or new cosmic event. The discovery showcases the potential of AI for scientific breakthroughs in astronomical archives.
Researchers have discovered a strong connection between the long ringdown phase of post-merger gravitational waves and the properties of dense regions in neutron-star cores. Analyzing this phase can significantly reduce uncertainties in the equation of state at very high densities, shedding light on what neutron stars are made of.
Scientists studying neutron 'starquakes' hope to gain new insights into the properties of neutron stars, improving our understanding of the universe. This research has potential implications for fields like health, security, and energy.
Researchers identified a new process leading to formation of low-field magnetars, solving the mystery that puzzled scientists since their discovery in 2010. The team used advanced simulations to model magneto-thermal evolution of neutron stars, finding that a specific dynamo process can generate weaker magnetic fields.
Researchers used a new method to precisely locate a fast radio burst, finding it in the outskirts of an old elliptical galaxy. This discovery raises questions about how energetic events occur in regions without new star formation, and challenges existing theories about FRB origins.
Astronomers have observed the same supermassive black hole exhibiting unprecedented behavior, with X-ray flashes increasing in frequency over two years. The source of these flashes is believed to be a spinning white dwarf core orbiting around the black hole's edge.
A nearby supernova explosion could produce gamma rays that pinpoint the mass of a key dark matter candidate, the axion. The Fermi Gamma-ray Space Telescope would need to be in position to detect these gamma rays within 10 seconds of the supernova's core collapse.
Scientists have found that black holes inherit their magnetic fields from their parent stars, specifically the surrounding disk of swirling matter during collapse. This discovery resolves a longstanding mystery and opens doors for further studies of jets.
A recent study reveals that fast radio bursts are more commonly associated with massive and metal-rich star-forming galaxies. This suggests that magnetars, the thought-to-be-triggers of FRBs, likely form in environments conducive to stellar mergers. The discovery was made using Caltech's Deep Synoptic Array-110 project.
Researchers from DTU have discovered a neutron star that rotates at an astonishing 716 times per second, making it one of the fastest-spinning objects ever observed. The neutron star is part of an X-ray binary star system and is located in the Sagittarius constellation.
Astronomers have observed a black hole triple system for the first time, featuring a central black hole consuming a star and a distant companion that orbits every 70,000 years. The discovery raises questions about the origins of the black hole itself.
Researchers from the Universiteit van Amsterdam and other institutions show that axion clouds around neutron stars could provide a new way to observe these elusive particles. The formation and properties of these clouds are studied, offering new opportunities for axion research and potentially solving the dark matter puzzle.
Astronomers have recorded hundreds of gamma-ray bursts (GRBs) in a massive global effort that rivals the 250-year-old Messier catalogue. The collection includes 64,813 photometric observations and showcases collaborative research across nations.
Researchers unveil previously unseen properties of neutron stars through gravitational wave analysis, providing insight into internal composition and dynamic material properties. The study places observational constraints on viscosity within neutron stars.
Researchers at Brookhaven National Laboratory's STAR Collaboration have discovered a new kind of antimatter nucleus, antihyperhydrogen-4, composed of four antimatter particles. The discovery was made using the Relativistic Heavy Ion Collider and analyzed details of collision debris.
Astronomers have uncovered 21 neutron stars in wide orbits around stars like our Sun, revealing the first dark neutron star population. The discovery was made possible by the European Space Agency's Gaia mission, which scanned the sky and measured wobbles of over a billion stars.
Scientists have captured the first-ever image of an S-shaped jet coming from a confirmed neutron star, providing strong evidence for precessing jets. The discovery was made using the MeerKAT telescope and reveals valuable insights into the extreme physics behind the launching of the jet.
Researchers have proposed a new model explaining neutron star glitches, suggesting that the power-law behavior of glitch energies is due to the formation of twisted clusters of superfluid vortices. The study found that the exponent for the power-law behavior closely matched the observed data.
Researchers have discovered a hidden treasure in the Milky Way, identifying Cygnus X-3 as an ultra-luminous X-ray source. The use of X-ray polarized vision has revealed the configuration of dense matter surrounding the black hole, sparking new insights into extreme matter consumption.
New simulations show that neutrinos created during neutron star collisions can be trapped at the interface of merging stars and interact with matter for 2-3 milliseconds. This brief out-of-equilibrium phase is crucial in understanding the physics of these extreme events.
Astronomers have detected a neutron star spinning at an unprecedentedly slow rate, defying the typical mind-bending speeds of these ultra-dense stars. The object emits radio signals every 54 minutes, offering new insights into its complex life cycle and potential implications for our understanding of stellar objects.
Sean McWilliams' team will study stellar-mass and massive binary inspirals, improving modeling accuracy for the Laser Interferometer Space Antenna (LISA). The project aims to enhance the instrument's science mission by making necessary dramatic improvements in modeling accuracy.
Astronomers from the University of Sydney and CSIRO have detected a slow-spinning neutron star with a period of nearly an hour, breaking all known rules. This discovery provides new insights into the complex life cycles of stellar objects and may prompt a reconsideration of our understanding of neutron stars or white dwarfs.
Researchers at MIT have developed a new method to measure the spin of supermassive black holes by tracking the pattern of X-ray flashes produced during tidal disruption events. By analyzing the wobble of the accretion disk, they were able to determine that the nearby black hole was spinning at less than 25% the speed of light.
Researchers have discovered three of the oldest stars in the universe, forming between 12 and 13 billion years ago. The team believes these 'Small Accreted Stellar System' (SASS) stars originated from small primitive galaxies absorbed by the Milky Way.
An international team of researchers, including those from the University of Geneva, detected a giant magnetar eruption coming from a neutron star with an exceptionally strong magnetic field. The discovery was made using ESA's satellite INTEGRAL and confirms that magnetars are young neutron stars.
Researchers detected unusual radio pulses from a dormant star with powerful magnetic field, challenging previous explanations. The signals suggest superheated plasma above the magnetar's pole is acting like a polarizing filter.
Physicists calculated that neutron stars can heat up quickly due to energy transfer from dark matter particles, providing a potential way to detect dark matter. This process could reveal the nature of dark matter and its interactions with regular matter.
Astronomers have discovered a new black hole behavior where a smaller black hole repeatedly punches through the disk of a larger black hole, releasing plumes of gas. The findings challenge conventional views on black hole accretion disks and suggest they may be more varied in their contents.
For the first time, astronomers have measured the speed of fast-moving jets in space, crucial to star formation and the distribution of elements needed for life. The jets of matter, expelled by stars deemed 'cosmic cannibals', were found to travel at over one-third of the speed of light.
Researchers have discovered unique electromagnetic signals in the debris of a neutron star merger, which could provide new constraints on axion-like particles and their potential role in dark matter. The findings were made using data from NASA's Fermi-LAT gamma-ray telescope.
Researchers have detected tellurium in a kilonova afterglow, indicating that neutron star mergers can create rare heavy elements. This discovery sheds light on the formation of elements heavier than iron and provides new insights into the universe's chemical composition.
The James Webb Space Telescope has found direct evidence for emission from a probable young neutron star at the site of the recently observed supernova SN 1987A. Spectral analysis revealed strong signals due to ionized argon and five times ionized argon, indicating high-energy radiation from the compact object.
Researchers at the University of Tokyo have developed a method to accurately measure and predict neutron-induced transmutation, which can make nuclear waste more stable. This technique could lead to improved nuclear waste treatment facilities and new theories about the creation of heavier elements in the universe.
Auburn University researchers are using a $400K NSF award to study the ionization and recombination of heavy elements in kilonovae, shedding light on their origins. The team's calculations will help determine which elements were produced in neutron star mergers.
Researchers visualize second sound, a wave-like movement of heat, independent of physical particle motion in a superfluid. The findings expand understanding of heat flow in superconductors and neutron stars.
Astronomers have found a direct link between massive star explosions and the formation of compact objects like black holes and neutron stars. The study used ESO's VLT and NTT to observe a supernova explosion in a nearby galaxy, revealing evidence for a compact remnant left behind.
A new study places the likelihood of massive neutron stars having deconfined quark matter at 80-90%. This is made possible through Bayesian statistical inference and massive supercomputer runs. The research has implications for our understanding of particle and nuclear physics, as well as astrophysics.
Researchers have identified a population of massive stars stripped of their hydrogen envelopes by their companions in binary systems. These hot helium stars are believed to be the origins of hydrogen-poor core-collapse supernovae and neutron star mergers, shedding new light on a long-theorized phenomenon.
Researchers found that ancient stars created elements with atomic masses greater than 260, challenging current knowledge. This discovery provides insight into the process of heavy element formation in stars and could help explain the diversity of elements on Earth.
Researchers found a correlation between light precision metals like silver and rare earth nuclei like europium, indicating a consistent process operating during heavy element formation. The pattern provides a clear signature of fission creating these elements.
Scientists have successfully simulated neutron star glitches using ultracold supersolids, revealing a link between quantum mechanics and astrophysics. The study sheds light on the internal structure and dynamics of neutron stars, providing valuable insights into extreme conditions.
A new unified model confirms that some long-lasting gamma-ray bursts are created in the aftermath of cosmic mergers that spawn an infant black hole surrounded by a giant disk of natal material. The findings explain recently observed long GRBs that astronomers couldn't link to collapsing stars.
The new catalog of gamma-ray pulsars, compiled from the work of 170 scientists globally, reveals a significant increase in gamma-ray emitting pulsars discovered by NASA's Fermi mission. This discovery sheds light on astrophysics research and offers insights into cosmic rays, stellar evolution, gravitational waves, and dark matter.
Astronomers confirm that a stellar corpse is the source of repeated energetic flares observed after a distant star's explosive death. The team detected at least 14 irregular light pulses over a 120-day period, likely driven by processes such as rapid rotation or strong magnetic fields.
Researchers from Helmholtz-Zentrum Dresden-Rossendorf are studying near-Earth cosmic explosions to understand their potential impact on the Earth's biosphere. They found that ejected debris can reach our solar system, with some isotopes, such as iron-60 and plutonium-244, potentially coming from supernovae or other galactic events.
Researchers observed a gamma-ray burst from a kilonova, the collision of two compact neutron stars, using the James Webb Space Telescope. The data revealed the creation of the element tellurium, which had not been recognized before, and provided new insights into the formation of heavy elements in the universe.
The James Webb Space Telescope has made its first detection of a heavy element, tellurium, in a star merger. This breakthrough allows scientists to better understand the process by which rare elements are created, and may shed light on other elements near tellurium that could be present.