Researchers detected strong Bayesian evidence for a spatially correlated process with scalar transverse correlations, suggesting an alternative theory of gravity beyond Einstein's general relativity. The study uses the North American Nanohertz Observatory for Gravitational Waves' 12.5-year data set.
Researchers have conducted a 16-year experiment to challenge Einstein's theory with pulsars, revealing relativistic effects for the first time and confirming predictions with precision. The study uses the unique Double Pulsar system, which consists of two orbiting radio pulsars, providing an ideal laboratory for testing gravity theories.
A team of international researchers challenged Einstein's theory of general relativity using pulsars as a cosmic laboratory. They detected new relativistic effects, including light deflection and time dilation, with unprecedented precision. The study provides significant insights into gravity theories and the fundamental forces of nature.
A team of scientists used uGMRT to study eclipses of millisecond pulsars, finding that absorption by magnetized materials from the companion star is the cause. The study provides insight into the evolutionary processes and ultimate fate of these exotic systems.
Researchers at the University of Birmingham explore new approaches to detecting low-frequency gravitational waves using pulsars and other measurements. They suggest combining these methods with observations from projects like Gaia, which could help disentangle and interpret signals from the earliest periods of the universe.
Astronomers detected a unique signal with high polarisation and dramatic brightness variations, puzzling existing theories of stellar objects. The discovery was made using the CSIRO's ASKAP radio telescope and MeerKAT in South Africa.
A new study reveals how supernovae explosions of massive stars can form heavy neutron star binaries, resolving a puzzle from gravitational wave observatories LIGO and Virgo. The team's results show that the explosion energy determines whether a stripped star forms a neutron star or black hole.
A nearly $2 million NSF grant will accelerate the hunt for low-frequency gravitational waves using high-precision timing observations of exotic stars called millisecond pulsars. WVU's Maura McLaughlin is principal investigator on the project, which aims to discover new types of gravitational waves and expand the IPTA's reach globally.
Researchers have developed a new adaptive radiotherapy strategy called PULSAR, which combines radiation and immunotherapy to improve tumor control. The approach uses artificial intelligence to personalize treatment plans, allowing oncologists to replan cancer treatment in under 30 minutes.
The Large High Altitude Air Shower Observatory (LHAASO) has accurately measured the brightness of the Crab Nebula over a record-breaking energy range. The measurement confirms past findings and provides direct evidence for the acceleration of high-energy electrons in the nebula.
West Virginia University is part of a team awarded $17 million from the National Science Foundation to renew the NANOGrav Physics Frontiers Center. The center aims to detect gravitational waves using pulsar timing arrays and will advance research in fundamental physics.
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.
The Galactic Plane Pulsar Snapshot (GPPS) has discovered 201 pulsars using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), including many very faint and millisecond pulsars. The survey reveals more electrons in the Milky Way's spiral arms than previously known.
A recent study published in Nature Astronomy has found evidence for three-dimensional (3D) spin-velocity alignment in pulsars. The research, conducted using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), reveals new insights into the origins of these rapidly rotating neutron stars.
Astronomers have discovered a pulsar, a dense and rapidly spinning neutron star sending radio waves into the cosmos. The finding is significant as it hints at a large population of pulsars awaiting discovery in the Southern Hemisphere, with the potential to be detected by the Square Kilometre Array telescope.
Researchers observed that X-ray emissions coincide with giant radio pulses from the Crab Pulsar, providing constraints on mechanisms underlying these phenomena. The study found that total emitted energy during GRPs is tens to hundreds of times higher than previously known.
A group of scientists, led by Teruaki Enoto, have discovered that the 'giant radio pulses' emitted by the Crab pulsar include an increase in x-ray emissions, making them hundreds of times more energetic. This finding provides new insights into the mysterious phenomenon of fast radio bursts and puts constraints on models of these events.
A global science collaboration using NICER data discovered X-ray surges accompanying giant radio pulses from the Crab Nebula's pulsar. The finding shows that these bursts release dozens to hundreds of times higher total emitted energy than previously estimated.
Burke-Spolaor plans to use the fellowship funding to launch exploratory projects on gravitational waves and fast radio bursts. She aims to expand her work internationally through partnerships with the International Pulsar Timing Array.
Researchers at NANOGrav Physics Frontiers Center have found intriguing low-frequency signal that may be attributable to gravitational waves. The signal is attributed to supermassive black hole pairs at the cores of merged, distant galaxies.
A team of researchers used novel data analysis methods and Einstein@Home computing power to track down a neutron star's gamma-ray pulsations in NASA's Fermi Space Telescope data. The study reveals the existence of a rapidly rotating neutron star in orbit with a stellar companion about six times the mass of our Sun.
Researchers from NANOGrav used Arecibo Observatory and Green Bank Telescope to study pulsar signals, detecting minute changes in Earth's position possibly due to gravitational waves. The findings provide new insights into the universe and expand knowledge of gravity beyond current limits.
Researchers measured pulsar accelerations to clock star motions, revealing tiny accelerations at a few centimeters per second. This opens a new window into galactic dynamics and provides clues in the search for dark matter.
A team of scientists from Rochester Institute of Technology and Instituto Argentino de Radioastronomiá completed a yearlong pulsar timing study using two upgraded radio telescopes in Argentina. The observations provided accurate bounds to gravitational waves, increasing the sensitivity of existing pulsar timing arrays.
Researchers have made breakthrough discoveries about fast radio bursts (FRBs), a mysterious phenomenon. The studies reveal that magnetars, incredibly dense neutron stars, can produce FRBs through magnetic field dissipation. These findings narrow down the understanding of FRB mechanisms, offering new insights into this enigmatic field.
Researchers have found a new magnetar with a pulsation period of 1.36 seconds, showing spin-down behavior suggesting rotation-powered pulsar emissions. The discovery reveals a missing link between magnetars and rotation-powered pulsars, providing new insights into neutron stars with high magnetic fields.
The team aims to discover millisecond pulsars, exotic binary systems, and intermittent pulsars. Simulations predict the full survey will uncover 20-30 MSPs and 150-200 normal pulsars.
Researchers have inferred a tiny neutron star deformation, equivalent to a few micrometres, at a distance of 4500 light-years using the spin-down rate of a millisecond pulsar. This is the first direct detection of continuous gravitational waves from a deformed neutron star.
Researchers have discovered an unusual pulsar in a binary system with two neutron stars of different masses, which could provide vital clues about unsolved mysteries in astrophysics. The discovery, published in Nature, sheds light on the expansion rate of the Universe and the nature of exotic matter that makes up neutron star interiors.
Researchers are using Jupiter's mass and orbit to help locate the center of gravity of the solar system, which can signal the presence of massive black holes. By analyzing changes in pulsar timing, they aim to detect gravitational waves that warp space-time.
Researchers found that newborn particles interacting with powerful electromagnetic fields produce pulsars' unique beams of radio waves. The discovery could improve pulsar timing arrays and shed light on fast radio bursts.
A team of Indian scientists has detected a broad-energy X-ray pulsation in the new source, classifying it as an ultra-luminous X-ray pulsar (ULXP). The object is thought to be a neutron star with a rotation period of up to 100 times per second.
Researchers observed an accreting neutron star entering an outburst phase, studying its structure and material movement. The observation revealed a 12-day process, contradicting previous theories of two- to three-day timescales.
Researchers have successfully detected gamma rays from the Crab Nebula using a next-generation telescope, shedding new light on supernovae and dark matter. The prototype Schwarzschild-Couder Telescope promises to enhance imaging detail over larger field of view across the sky.
Researchers have discovered the first pulsar in Globular Cluster M92 using FAST telescope. The pulsar, PSR J1717+4307A, is an eclipsing binary millisecond pulsar in a circular orbit with a companion star. This discovery provides insights into pulsars and their role in probing dense stellar cores.
Researchers have designed a new camera for hypertelescopes to capture multiple stars at once, enabling high-resolution images of planets, pulsars, and galaxies. The enhanced design could reveal details of extremely small objects like the Crab pulsar, revolutionizing exoplanetary research.
A new study confirms Lense-Thirring precession - a phenomenon of relativistic frame-dragging - in a distant binary star system. The research observes a long-term drift in the orbital parameters due to the rapidly rotating white dwarf companion, confirming Einstein's general theory of relativity.
Astronomers use NASA's Great Observatories to create a three-dimensional representation of the dynamic Crab Nebula, an exploding star. The visualization highlights the pulsar at the heart of the nebula and its intricate structures.
The discovery of a faint gamma-ray 'halo' around Geminga, a nearby pulsar, may hold the solution to a long-standing mystery about the amount of antimatter in our neighborhood. The halo's size and energy suggest that it could be responsible for as much as 20% of high-energy positrons detected by NASA's Alpha Magnetic Spectrometer.
Scientists have obtained precise measurements of a pulsar's size and mass, as well as the first-ever map of hot spots on its surface using NASA's NICER telescope. The new data reveals that pulsars are not simple objects with powerful magnetic fields, but rather complex systems with multiple hot spots.
Scientists have discovered a unique neutron star with an apparent magnetic field structure that manifests itself under specific angles relative to the observer. The study provides insight into the internal structure of the magnetic field, contradicting earlier assumptions and revealing new properties of neutron stars.
NICER detected a record-breaking X-ray burst from pulsar SAX J1808.4-3658, revealing a two-step change in brightness caused by the ejection of separate layers from the pulsar surface. The observations also show X-rays reflecting off of the accretion disk and burst oscillations.
Astronomers using the Green Bank Telescope have discovered a millisecond pulsar with a massive neutron star at its center, packing 2.17 times the mass of our Sun into a sphere only 30 kilometers across. This finding approaches the limits of how massive and compact an object can become without crushing itself down into a black hole.
West Virginia University astronomers have detected the most massive neutron star ever measured, weighing 2.17 times that of the sun. This groundbreaking discovery was made possible through the Green Bank Telescope and sheds light on the mysteries surrounding these exotic celestial objects.
A team of astrophysicists discovered a connection between the brightening of pulsar wind nebula and the spin-down rate transition in PSR B0540-69. The study found that the X-ray PWN around PSR B0540-69 increased by 32% over 400 days, indicating a sudden enhancement of the magnetic field that powers the pulsar wind.
Scientists have studied the Vela Pulsar, a neutron star 1,000 light years away, to understand its behavior during a glitch. The team found that the star's spin increased before slowing down, providing a glimpse into its interior structure, which consists of three different components.
Scientists have identified the best candidate white dwarfs to hunt for exoplanet cores, which can survive for over 100 million to a billion years. The researchers plan to use radio telescopes to detect radio waves emitted by the cores, potentially leading to breakthrough discoveries.
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has enabled groundbreaking discoveries in pulsar and neutral hydrogen observations. With its ultra-wideband capabilities, FAST allows for the study of rotating radio transients in greater detail than ever before.
Astronomers have found a pulsar that has escaped the debris of a supernova explosion and is now speeding away at nearly 700 miles per second. The discovery provides important insights into how pulsars can gain speed from supernovae.
Astronomers found a pulsar hurtling through space at nearly 2.5 million miles an hour, faster than 99% of those with measured speeds. The discovery sheds light on how supernova explosions can accelerate neutron stars to high speeds.
Astronomers have discovered a rare gamma-ray binary system, allowing for the study of particle acceleration in a unique environment. The system, consisting of a massive star and a rapidly rotating neutron star, was detected emitting high-energy particles accelerated by its strong magnetic field.
Researchers observed a strongly magnetized accreting X-ray pulsar using the Karl G. Jansky Very Large Array and NASA's Swift space telescope. The discovery reveals a new class of jet-producing sources, contradicting previous expectations about strong magnetic fields.
Researchers detected extended infrared emissions around RX J0806.4-4123, suggesting a 'fallback disk' of material or a pulsar wind nebula. The findings challenge current understanding of neutron star evolution and offer new avenues for study with the NASA James Webb Space Telescope.
Researchers observe a supernova explosion that remained visible six years after the initial event, sparking predictions of a pulsar wind nebula. The phenomenon could shed light on the fundamental physics behind superluminous supernovae and their potential role in producing gravitational waves.
Researchers measured compositions of 18 planetary systems up to 456 light years away, finding similar proportions of elements to those on Earth. The study suggests that Earth-like planets may exist elsewhere in the galaxy.
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.
A team of astronomers tested Einstein's theory of general relativity using a three-star system and found almost no detectable difference between the pulsar and inner white dwarf, indicating little room for alternative theories of gravity. The study confirms that relativity still applies even in extreme gravity systems.
A team of astronomers has performed one of the highest resolution observations in astronomical history of a pulsar 6,500 light-years away, observing two intense regions of radiation around a rapidly spinning star. The observation could provide clues to the nature of Fast Radio Bursts, which may be amplified by plasma lenses.
The SEXTANT team plans to fly XNAV on a CubeSat mission called CubeX to gather timing data from millisecond pulsars. The mission aims to improve navigation in deep space and measure the Moon's lower crust and upper mantle composition.
Astrophysicists have determined that the maximum mass of neutron stars cannot exceed 2.16 solar masses through a combination of theoretical and observational research. The result was achieved by applying universal relations to data on gravitational-wave signals and electromagnetic radiation from merging neutron star events.