Researchers at University of Bonn use computer simulations to understand how star clusters are formed from interstellar gas clouds and evolve over time. The study finds that small clusters are easily destroyed by radiation from stars, while heavy clusters survive longer.
Astronomers have found an exceptionally massive black hole in orbit around a huge companion star in the nearby galaxy M33, with a mass of 15.7 times that of the Sun. The discovery raises questions about how such a big black hole could have formed.
New research reveals neutron has negative charge at inner core and outer edge, with positive charge in between to balance it. The discovery changes scientific understanding of how neutrons interact with electrons and protons, with implications for the strong force and atomic nuclei.
Astronomers found a low-mass companion to a rapidly spinning pulsar, which orbits the neutron star every 54.7 minutes at an average distance of 230,000 miles. The system is thought to have formed billions of years ago and is now accreting mass from the companion, causing an outburst.
Researchers have observed the properties of neutron stars, including their sizes and masses, using a new technique that exploits Einstein's general theory of relativity. The study provides insights into the extreme conditions within these ultradense objects.
Astronomers have used XMM-Newton and Suzaku to measure the diameters and masses of neutron stars, confirming Einstein's predicted distortion of space-time. The technique involves observing the iron lines produced by hot atoms swirling around neutron stars.
Astronomers have pioneered a new technique to measure the properties of neutron stars, allowing them to study the extreme conditions under which matter is packed. Using XMM-Newton and Suzaku satellites, scientists observed distorted space-time around three neutron stars, confirming predictions by Einstein's theory of general relativity.
Astronomers have identified Calvera, a bright X-ray source in Ursa Minor, as a promising candidate for an isolated neutron star, potentially the closest known. The team used NASA's Swift satellite and other telescopes to pinpoint its position and confirm its characteristics.
The discovery of a planet orbiting a giant red star provides insight into the potential fate of our solar system as it evolves into a red-giant star. The planet, located 300 light years from Earth, circles its star every 360 days and offers astronomers a unique opportunity to study the effects of red-giant stars on planetary systems.
The discovery reveals how efficient neutron stars can be as cosmic power factories and shows they rival black holes in generating powerful jets. The X-ray jet is found to be almost as efficient as one from a black hole, with a surprising high percentage of energy converted into powering the jet.
Astronomers have discovered a young star with an elliptical ring that is likely caused by the presence of an undiscovered Neptune-sized planet. The ring is offset by 1.4 billion miles, more than 15 times the distance from Earth to the Sun.
Astronomers have witnessed the death of a very massive star by observing two celestial explosions at exactly the same position in the sky. The most likely explanation for the 2004 explosion was a giant outburst of the star, which was later confirmed by the final death of the same star.
Astronomers have discovered a massive transiting planet, TrES-3, with a 31-hour year, orbiting its parent star about 1,500 light-years away. The planet is twice the mass of Jupiter and one of the planets with the shortest known periods.
Astronomers have measured the age of a star in our Galaxy using ESO's VLT, finding it to be 13.2 billion years old, nearly as old as the Universe itself. This discovery was made possible by a new technique that combines radioactive elements thorium and uranium to accurately determine a star's age.
Researchers have built a new model that suggests neutron star surfaces run hotter than previously thought, releasing 10 times more heat. This helps explain the observed frequency of superbursts on such stars' surfaces, but scientists still don't know why they occur annually.
The new magnet will be the world's strongest for neutron experiments, allowing scientists to study high-temperature superconductors and hydrogen structure in various materials. It is part of a $23.1-million project funded by the German Federal Ministry for Education and Research.
Astronomers observed a massive star suffering a double whammy, with the star surviving one outburst before exploding as Supernova 2006jc. The study found that the supernova's blast wave interacted with material ejected by the star two years earlier, indicating a unique stellar evolution process.
A team of astronomers has solved the long-standing mystery of Kepler's supernova remnant using Chandra's latest image, revealing it as a Type Ia supernova. The discovery sheds light on how stars can end catastrophically and expands our understanding of the universe.
Researchers found that gas giants either form within the first 10 million years of a sun-like star's life or not at all. The study suggests that gas giant planets must form early in a star's history, offering insights into planet formation.
Astronomers have discovered a population of small newborn stars in N90, a fascinating star-forming region located in the Small Magellanic Cloud. The high-energy radiation from these young stars is eroding the surrounding nebula, revealing the early stages of star formation processes.
A team of scientists has successfully observed rare particles of light emitted during the radioactive decay of a neutron, confirming theoretical predictions. The experiment, conducted at NIST's Center for Neutron Research, used novel instruments and techniques to minimize uncertainties and detect elusive photons.
Researchers found that under certain conditions, the surface of a strange star could fragment into blobs of quark material called strangelets, forming a rigid halo. This contradicts traditional models and raises questions about the nature of collapsed stars' nuclear leftovers.
Researchers at NIST have developed a highly sensitive technique called delayed neutron activation analysis to improve the detection of nuclear materials. The technique can detect trace amounts of uranium-235 and plutonium-239 in less than three minutes, making it crucial for homeland security.
Researchers have directly imaged a faint brown dwarf companion to the star HD 3651, which hosts a planet. The discovery provides valuable information on planetary formation and offers a unique insight into the co-formation of planets and brown dwarfs around the same star.
A US-Australian research team has detected radio pulses from a magnetar star, XTE J1810-197, which is giving off extraordinary radio pulses. The finding links this rare type of star with the much more common 'radio pulsars', reordering our understanding of these neutron stars.
Researchers using ESA's XMM-Newton satellite data have found an object in the heart of a 2,000-year-old supernova remnant that exhibits complex and intriguing properties. The object, called 1E161348-5055, has a cycle that repeats every 6.7 hours, which is tens of thousands of times longer than expected for a young neutron star.
Astronomers propose that super-Earths can form around red dwarf stars via ultraviolet stripping, a process previously thought to only create gas giant planets. The new theory suggests that the mass of the central star determines whether a planet forms as a gas giant or a super-Earth.
Researchers have discovered the Universe's strongest magnetic field, generated by violent collisions between neutron stars. The discovery sheds light on the mysterious short Gamma-ray bursts, which are the most powerful explosions in the universe. Scientists believe that strong magnetic fields play a crucial role in their formation.
Researchers successfully produced fusion neutrons using sonofusion without an external neutron source, verifying the presence of nuclear emissions. The new setup used natural uranium to produce bubbles through radioactive decay, obviating the need for an external neutron source.
Astronomers discover an Earth-like planet with a solid core, orbiting a red dwarf star five times less massive than the sun. The discovery, made using microlensing technique, reveals thousands of potentially habitable planets in distant parts of the galaxy.
Astronomers have found a small planet with a mass about five times that of Earth, orbiting a small star near the center of the galaxy. The discovery suggests there are many other small planets in habitable zones, where temperatures are moderate enough for liquid water to appear on their surfaces.
A team from MIT and Harvard found that a certain type of X-ray explosion common on neutron stars is never seen around their black hole cousins, indicating the presence of an event horizon. The absence of surface explosions called X-ray bursts suggests that gas released by nearby stars vanishes into a void.
Researchers discovered young super nebulae around giant star clusters, containing up to a million young stars, and emitting radiant power billions of times that of the sun. The discovery raises questions about why Milky Way no longer forms similar clusters after 10 billion years.
UI researchers discovered a giant star orbiting a 'medium-sized' black hole every 62 days, indicating the star's enormous size and brightness in X-rays. This finding may help confirm a class of black holes with masses between 100 and 10,000 solar masses.
Researchers have pinpointed a population of old neutron stars as the sources of short gamma-ray bursts, which are fainter and more difficult to localize than long bursts. The discovery sheds new light on these enigmatic cosmic explosions.
A team of astronomers has discovered a hot Jupiter planet in a triple star system, challenging conventional theories of planetary formation. The discovery suggests that it is possible for planets to form around the host star and then be captured by a binary system, explaining the unusual configuration of the HD 188753 system.
Astronomers recorded a massive star ejected from the Large Magellanic Cloud with speeds of over 2.6 million kilometers per hour. The high velocity suggests the presence of a massive black hole, which could be responsible for kicking the star out of its parent galaxy.
Astronomers find a dense whirling ball of neutrons in an extremely young star cluster, challenging the idea that nature can make black holes. The discovery shows massive stars may not collapse into black holes as predicted, but instead create neutron stars with a greater influence on future generations of stars.
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.
Majkrzak's work on neutron reflectometry has significantly improved the field's ability to analyze atomic and magnetic structures. His research findings have numerous applications in biology, particularly in the study of materials at the molecular level.
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 discovered two most chemically primitive stars, HE0107-5240 and HE1327-2326, offering insights into the universe's early stages. These unevolved dwarf stars have iron contents significantly lower than previously known stars, providing a glimpse into the elements produced during supernova explosions.
The star-nosed mole's exceptional foraging ability is attributed to its star-shaped appendages that ring its nose, allowing it to detect small prey quickly. By minimizing handling time, the mole achieves a net energy 'profit' with a diet of insect larvae and other small food sources.
Researchers used FUSE data to detect spectrum of ultraviolet light in region with no star, revealing light scattering from dust near bright star. The team hopes to use high spectral resolution to study diffuse background radiation and understand the nature of interstellar dust.
A trio of massive young star clusters embedded in a cloud of stars offers clues about the birth of super-star clusters. The discovery suggests that these large groups could be formed by the merger of smaller clusters. By studying this phenomenon, scientists can better understand the formation and evolution of super-star clusters.
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.
A new discovery by Pilar Ruiz-Lapuente and colleagues identifies a clear path for Type Ia supernovae to form in binary star systems. The research found that the companion star is similar to our sun, but slightly older and with high heavy-element content, supporting the theory that Type Ia supernovae originate from these systems.
Researchers found stable ring-shaped magnetic field configurations in magnetic A-stars, White Dwarf stars, and neutron stars, supporting the 'fossil field' hypothesis. These fields can persist for hundreds of millions of years, surviving the star's life span.
Researchers estimate that a neutron star is about 1.8 times as massive as the sun with a radius of about 7 miles, sparking interest in its equation of state and superfluid properties. The findings rule out free quarks and provide insights into the density-pressure relationship within the star.
Researchers developed a novel imaging process using neutrons, providing better resolution and penetration than visible light. The microscope has potential applications in biology, particularly with samples containing hydrogen.
The UK's Healthcare Commission, led by Ian Kennedy, has been criticized for its flawed star system and lack of transparency. The commission's ratings have been shown to be based on incomplete data and do not accurately reflect the quality of care provided by NHS Trusts.
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.
Astronomers have directly measured the mass of a single star, the first time this feat has been accomplished for any star other than our own sun. The star, nearly 2,000 light-years away, was found to have one-tenth the mass of the Sun using a combination of old and new astronomical techniques.
Astronomers from Johns Hopkins University confirm the Cygnus Loop is closer to Earth than previously thought, with a distance of 1,860 light years. The new findings were obtained using the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite and provide an accurate starting point for understanding this important supernova remnant.
Astronomer Steve van Straaten discovered a binary star with a vibrational frequency of 1330 Hz, the highest ever recorded. This finding allows researchers to develop new models for movement in the vicinity of a neutron star.
A team of astronomers at Penn State used the Hobby-Eberly Telescope to detect a cometlike body falling onto a massive, very young star. The infall, which occurred about 3200 years ago, provided dramatic spectral variations in the star's light. This discovery sheds light on planetary formation and the evolution of massive star systems.
Astronomers have discovered the nearest and youngest star with a visible disk of dust that may be a nursery for planets. The dim red dwarf star AU Mic is about half the mass of the sun but only 12 million years old, and its dusty debris disk stretches around 210 astronomical units from the central star.
Researchers watched the inner regions of an accretion disk, just miles from a neutron star's surface, change its structure in real-time. The observation provides new insight into the flow of a neutron star's accretion disk and could help study black holes and distant quasars.
The team discovered LBV 1806-20, a massive star at least 150 times larger than the sun, with estimated age of less than 2 million years. The star's enormous size is attributed to shock-induced star formation, while its location in a rare cluster of stars raises further questions about its origins.
Gravitational waves are ripples in space-time produced by massive objects' acceleration. The detection of these waves will provide unique information about astrophysical systems like supernovae and black hole formation.