Articles tagged with Black Holes
Researchers propose a new theory on how massive, spinning black holes form near supermassive black holes at the centers of active galactic nuclei. This 'Pac-Man-like' behavior offers a natural explanation for high-mass binary black hole mergers and could help understand galaxy growth.
Researchers at Skoltech found that black holes thermalize through the same mechanism as conventional quantum systems, providing insight into quantum gravity. The study confirms the Eigenstate Thermalization Hypothesis in spatially-extended systems, a long-sought proof.
Researchers found evidence for low-mass black holes, potentially opening up a new area of study about star explosions and formation. The discovery uses data from the Apache Point Observatory Galactic Evolution Experiment and identifies a class of black holes smaller than previously known.
Researchers used simulations to show how supermassive black holes' powerful jets are disrupted by hot gas and galaxies, preventing gas from cooling and forming stars. The team found that this 'weather' mechanism may solve the long-standing 'cooling flow' puzzle plaguing astrophysicists.
Researchers at UC Riverside discover large-scale winds associated with active black holes in small galaxies suppress star formation, impacting galaxy evolution. The team used the Sloan Digital Sky Survey data to identify 50 dwarf galaxies and found six of them showing signs of winds emanating from their active black holes.
A massive explosion occurred in the center of the Milky Way 3.5 million years ago, creating two enormous 'ionisation cones' that sliced through the galaxy and impacted the Magellanic Stream. The blast was so powerful it lasted for 300,000 years and was triggered by nuclear activity associated with the black hole.
A new Yale University study reveals that supermassive black holes grow in tandem with their host galaxies, influenced by the rate of star formation. The research provides a sharper understanding of the intricate relationship between these cosmic entities.
TESS observed a black hole tearing apart a star in a cataclysmic event, allowing scientists to study the physics of tidal disruptions. The early data revealed a smooth rise in brightness and a significant temperature drop near the black hole.
A team of astronomers has observed the aftermath of a star violently ripped apart by a supermassive black hole, providing unprecedented detail and insights into these mysterious phenomena. The observations, made possible by NASA's TESS satellite, reveal new features of tidal disruption events (TDEs) that were previously unknown.
A new NASA visualization reveals how a black hole distorts space, creating a warped view of its surroundings like a carnival mirror. The extreme gravity bends light from the accretion disk, producing a misshapen appearance.
Astrophysicists from the Moscow Institute of Physics and Technology have devised a new way to indirectly measure the mass of a black hole, testing it on the Messier 87 active galaxy. The method combines theoretical modeling, computer calculations, and telescope observations to estimate black hole mass and spin.
Scientists have made progress in understanding dark matter by studying the interactions between light and gas in intergalactic space. Researchers used simulations and observations of distant quasars to analyze the properties of primordial black holes, which could provide evidence for their role in explaining dark matter.
Astrophysicists detected gravitational wave 'tones' emitted by a merging black hole, validating the 'no-hair theory' and confirming Einstein's general relativity. The breakthrough comes 10 years earlier than expected and opens the era of understanding black holes and their properties.
Astronomers have discovered a pair of enormous radio-emitting bubbles in the center of the Milky Way, likely formed by a powerful eruption near the galaxy's supermassive black hole. The hourglass-like feature dwarfs all other radio structures in the galactic center.
Physicists detected the ringing of a newborn black hole for the first time, confirming Einstein's theory and the idea that black holes have no 'hair.' The findings support the notion that black holes are bald-faced giants with no extraneous properties.
For the first time, scientists have detected two specific tones, or overtones, in the
Researchers have mapped out broad regions in the centre of the galaxy, tracing energetic regions in space with radio emission. The discovery suggests a violent eruption formed twin bubbles that are now visible for the first time, offering insights into the Galactic Centre and supermassive black hole.
Researchers analyzed 13,000 observations of the black hole from 133 nights since 2003 and found extreme variations in brightness, with one night seeing an area twice as bright as the next-brightest observation. The team is unsure whether this is an extraordinary singular event or a precursor to significantly increased activity.
An international team of astronomers has detected radio bubbles with South Africa's MeerKAT telescope, revealing a massive hourglass-shaped structure hundreds of light-years tall. The discovery is believed to be the result of an energetic burst near the supermassive black hole, providing insights into the Milky Way's central region.
A team of researchers has observed the rapid fuel consumption of eight quasars, revealing the role of strong gravity in feeding massive black holes. The study's findings provide new insights into the behavior of supermassive black holes at the center of quasars.
Japanese researchers propose a novel holographic framework to simulate black holes with a laboratory experiment. This setup can provide insight into the fundamental laws governing the cosmos at both tiny and vast scales.
Milinda Fernando and Staci Smith receive the fellowship for their work on high-performance algorithms and dynamic re-routing algorithms, respectively. Their research enables efficient use of modern supercomputers in various scientific disciplines.
A new study suggests that stellar collapse causes instabilities, preventing the formation of heavier black holes. The researchers propose that nuclear star clusters might act as 'black-hole nurseries', providing an ideal environment for generating generations of black holes.
An international team detected a very hot, dense outflowing wind close to a black hole at least 25,000 light-years from Earth. The gas was emitted in bursts that repeated every 8 minutes, revealing unprecedented behavior around a black hole.
Researchers using ALMA observe a swirling disk of cold interstellar gas rotating around a supermassive black hole, NGC 3258. The study provides an unprecedented close-up view of the disk's rotation, allowing for the determination of the black hole's mass as 2.25 billion solar masses.
Researchers at Durham University have spotted a brief transition phase in the development of quasars, challenging conventional views on red quasar color. The team believes this phase is caused by a violent ejection of energy from supermassive black holes, blowing away dust and gas to reveal blue quasars.
Researchers detected gravitational redshift in star orbiting Sagittarius A* black hole, consistent with general relativity. The findings provide a 'transformational change' in understanding supermassive blackholes and their physics.
A UCLA-led team, led by Andrea Ghez, has conducted the most comprehensive test of general relativity near a supermassive black hole. Their analysis confirms that Einstein's theory is still valid but also reveals its vulnerability in explaining gravity inside a black hole.
Researchers observed a supermassive black hole in galaxy NGC 3147 with an unusual thin disk of gas swirling around it, contrary to predictions. The team used Hubble Space Telescope's STIS instrument to study the disk, revealing unique features that can only be explained by Einstein's theories of relativity.
A team of astronomers has discovered a pair of titanic supermassive black holes on a collision course, which will soon emit powerful gravitational waves dwarfing those from smaller black hole mergers. The discovery can aid in estimating the number of nearby supermassive black holes emitting detectable gravitational waves.
A supermassive black hole at the centre of jellyfish galaxy JO201 is stripping away gas and throwing it out into space, accelerating the suppression of star formation. This process, known as ram-pressure stripping, has caused a brief increase in star formation due to the compression of clouds of gas.
A study of 561 healthy adults found an average of five unidentified health problems per person, including undiagnosed high blood pressure and hearing loss. Regular health checks can help identify these issues and improve health outcomes through individualized screening and self-management recommendations.
Researchers at Western University found evidence for direct formation of massive black holes without stellar remnants. The new model explains observed distribution of supermassive black hole masses and luminosities, providing an explanation for their presence at an early stage in the universe.
Researchers found that access to online job opportunities has not led to greater equality in the hiring process. Instead, lower-wage jobs are highly competitive, while higher-wage positions have limited openings.
New research suggests that most of Earth's heavy elements, including gold and platinum, were spewed from collapsars, a rare type of star explosion. This finding challenges the widely held belief that these elements come from collisions between neutron stars or black holes.
Astrophysicist Allison Kirkpatrick announces the discovery of cold quasars, galaxies with abundant cold gas that can still form new stars despite having a quasar at the center. This breakthrough finding overturns assumptions about galaxy maturation and may represent a previously unknown phase in every galaxy's lifecycle.
Researchers used reverberation mapping to determine the mass of NGC 4395's black hole, finding it to be about 10,000 times the mass of our sun. This is the smallest black hole found via this technique and provides new insights into dwarf galaxies and their nuclear black holes.
Researchers have imaged a never-before-seen disk of cool, interstellar gas wrapped around the supermassive black hole at the center of the Milky Way. The disk is composed of phenomenally hot and comparatively cooler gases, with temperatures ranging from 10 million to 10 thousand degrees Celsius.
Researchers create most detailed simulation of black hole, proving theoretical predictions about accretion disks. The inner-most region of an accretion disk aligns with its black hole's equator, solving a longstanding mystery from 1975.
Astronomers have discovered rapidly swinging jets from a black hole in V404 Cygni, behaving in a way never seen before. The jets are thought to be caused by the misalignment of the accretion disk and the black hole, resulting in a wobble-like motion.
A team of researchers unveiled an image of the shadow cast by a black hole at the center of galaxy Messier 87, using the Event Horizon Telescope and supercomputers like Stampede1 and Stampede2. The image confirms that supermassive black holes exist and match the appearance expected from simulations.
West Virginia University researchers aim to unlock secrets of gravitational waves from binary black hole collisions with public computing power. They are building a website with downloadable software to generate self-consistent simulations, covering gaps in knowledge about gravitational wave parameters.
A Harvard physicist has shown that wormholes can exist and are theoretically useful for quantum gravity research. However, travel through them would be slower than direct travel, making it impractical for space exploration.
The first real image of a black hole, obtained by EHT telescopes, confirms the predictions made in Jean-Pierre Luminet's 1979 simulation. The image shows an extraordinary accuracy, with characteristics such as the Einstein effect and Doppler shift clearly visible.
Scientists have captured the first-ever image of a black hole, which reveals the massive black hole at the center of the galaxy Messier 87. The image was achieved using the Event Horizon Telescope (EHT), an unprecedented Earth-sized virtual telescope linking telescopes around the globe.
The Event Horizon Telescope project has captured the first-ever image of a black hole, located at the heart of galaxy Messier 87. The image reveals a ring-like structure with a dark central region, confirming our understanding of general relativity.
A team of international astronomers, including those from the University of Massachusetts Amherst, have successfully captured the first direct image of a supermassive black hole's event horizon. The image reveals the black hole at the center of Messier 87, a massive galaxy 55 million light-years from Earth.
The Event Horizon Telescope (EHT) has captured the first direct visual evidence of a supermassive black hole, located 55 million light-years from Earth. The image reveals the black hole's mass is 6.5-billion times that of the Sun.
The 2019 APS April Meeting features talks on Event Horizon Telescope project's first results, nucleosynthesis in neutron star mergers, and the proposed AMEGO mission. These discoveries shed light on black holes, dark matter, and the universe's evolution.
An international team of researchers used the Subaru telescope to detect primordial black holes using gravitational lensing effects. The study found that these black holes can contribute no more than 0.1% to all dark matter mass, ruling out their theory as a primary composition.
Astronomers have made the first direct image of a dusty, doughnut-shaped feature surrounding a supermassive black hole in Cygnus A, a galaxy 760 million light-years from Earth. The feature, known as a torus, helps explain why objects with similar properties appear differently when viewed from different angles.
Astronomers have discovered two 'galactic center chimneys' that funnel matter and energy away from the Milky Way's central black hole, which could provide clues about the rate of star production in other galaxies. The chimneys are linked to giant structures known as the Fermi bubbles, which straddle the galaxy's center.
Researchers have discovered 83 supermassive black holes powering quasars 13 billion years ago, shedding light on their formation and evolution. This finding increases the number of known black holes at that epoch and provides new insights into their impact on the early universe's gas state.
A team of astronomers has discovered 83 quasars powered by supermassive black holes in the early Universe, increasing the number of known black holes at that epoch. The survey reveals the average spacing between supermassive black holes is a billion light-years, providing insights into their origin.
Researchers at Joint Quantum Institute demonstrate a new way to distinguish between quantum scrambling and true information loss using a small quantum computer. They achieved an accuracy of 80% in correctly diagnosing scrambling with seven atomic ions.
Researchers demonstrated scrambling of information in a quantum computer, simulating the behavior of matter inside a black hole. They showed that entangled qubits could potentially be used to probe the mysterious interiors of black holes.
Astronomers have discovered an intermediate-mass black hole, 30,000 times the mass of the Sun, hidden within a gas cloud near the Galactic center. The finding provides new insight into black hole growth and evolution, suggesting that small black holes can merge to form larger ones.
A precise definition of a black hole's singularity proves elusive, with diverse definitions among physicists and different physical approaches to understanding the phenomenon.
The Zwicky Transient Facility (ZTF) has discovered over 1,100 supernovae, two black holes, and 50 near-Earth asteroids since its operations began in March 2018. The facility is also conducting a systematic study of transients in galaxy nuclei, aiming to catch stars being ripped apart by supermassive black holes.
Researchers have charted the environment surrounding a stellar-mass black hole using NASA's NICER payload. The study reveals changes in the environment's size and shape, including the corona contracting vertically from 100 to 10 miles at vast distances.