Articles tagged with Black Holes
Astronomers measured the density of photon fog between Earth and quasar PKS 1441+25 using high-energy gamma rays. The data validated theoretical models for the number and brightness of stars and galaxies in the universe going back 7.6 billion years.
Astronomers observed gamma rays from PKS 1441+25, a blazar galaxy 7 billion years away. The high-energy light revealed a single region far from the power source, contradicting previous assumptions.
The VERITAS telescope detected powerful gamma rays from a distant galaxy, PKS 1441+25, revealing details about the black hole engine at its center. The gamma-ray emission was found to be located within the relativistic jet, but surprisingly far from the black hole, and is estimated to be around 5 light-years away.
The LAXPC instrument has observed various astrophysical objects, including Black hole X-ray binaries, Microquasars, and Supernova remnants. Its large detection volume and efficient xenon gas filling result in high detection efficiency above 30 keV.
The Event Horizon Telescope detected magnetic fields near the event horizon of the Milky Way's central black hole, Sgr A*, for the first time. The findings suggest that these magnetic fields are disordered in some regions and organized in others, possibly related to jet generation.
Researchers have discovered high levels of polarization in radio emissions from Sagittarius A*, providing proof that strong horizon-scale magnetic fields exist. This finding has significant implications for our understanding of black hole growth and the nature of gravity.
Researchers analyzed 700 hours of archival data to discover a burst of radio waves from six billion light years away. The region of space it came from was highly magnetized, suggesting it could be related to a supernova or nebula forming new stars.
An international team of astrophysicists led by Johns Hopkins University scientist Sjoert van Velzen witnessed a star being destroyed by a supermassive black hole, ejecting a jet of plasma at nearly the speed of light. The team observed this event over several months using multi-wavelength telescopes and satellites.
A team of scientists has discovered a hungry black hole swallowing a star at the centre of a nearby galaxy. The discovery confirms their theories about the nature of black holes and reveals faint jets of material shooting out from the supermassive black hole.
Researchers predict a physical effect that would help physicists and astronomers test Einstein's general theory of relativity. The gravitational Faraday effect, first predicted in the 1950s, theorizes that light polarization rotates according to Einstein's theory when traveling close to a spinning black hole.
Swift has detected over 1,000 gamma-ray bursts, providing valuable insights into extreme physical processes. The most distant GRB recorded by Swift is from over 12 billion years ago, offering new opportunities to investigate how these events are distributed across space and time.
Researchers observe closest tidal disruption event in nearly a decade, gaining new understanding of black hole effects on nearby stars. The study reveals details about the formation of an accretion disk and the expulsion of gas from the black hole.
Researchers discovered a previously unknown link between young star growth and black hole feeding habits, revealing the universality of accretion physics. The study found that young stellar objects' flickering light is similar to that of black holes and white dwarfs, supporting the idea that accretion is a universal process.
Sir Roger Penrose's 1965 theorem associates black holes with trapped surfaces that shrink over time. The theory also predicts the existence of singularities in extreme conditions, highlighting the limitations of Einstein's General Theory of Relativity.
Scientists used Parkes telescope for 11 years to detect gravitational waves but found nothing, suggesting that black holes may merge quickly without generating waves. The lack of detection has implications for astronomers who want to use pulsar timing techniques to spot gravitational waves.
A team of astronomers at the University of Maryland and NASA's Goddard Space Flight Center has found evidence for a new intermediate-mass black hole about 5,000 times the mass of the sun. The discovery adds to the list of potential medium-sized black holes and strengthens the case for their existence.
Astronomers reanalyzed archival data to find only 11 galaxies with 'genuine' mergers, leading to a lower estimated rate of galaxy mergers and potentially fewer supermassive black hole pairs. This reduces the level of expected gravitational waves from X-shaped radio galaxies.
Astronomers at Columbia University provide evidence of a pair of supermassive black holes converging towards a collision. They predict the smashup will occur in 100,000 years, offering insights into black hole growth and space-time vibrations.
A team of astronomers discovered 48 Dust Obscured Galaxies (DOGs) using the Hyper Suprime-Cam instrument on the Subaru Telescope. These rare galaxies are thought to harbor rapidly growing black holes, providing insights into the co-evolution of galaxies and supermassive black holes.
A new study suggests that rogue supernovas that explode in deep space were likely kicked out of their galaxies at high speeds and then ejected into space by the gravitational pull of a binary black hole. The study, published in Monthly Notices of the Royal Astronomical Society, used data from NASA's Hubble Space Telescope to trace 13 h...
Scientists use archived data from NASA's Hubble Space Telescope to study 13 unusual exploding stars, known as supernovae. These young stars were ejected from their galaxies at high speeds, and astronomers believe that supermassive black holes in merging galaxies played a key role in their ejection.
Astronomers have discovered a self-regulating cycle between black holes, jets, and newborn stars in giant elliptical galaxies. The process, observed using Hubble Space Telescope data, controls the rate of star formation by heating and cooling gas halos around these galaxies.
Researchers discovered neutron stars can accelerate material to nearly light speed, rivaling black holes. This finding contradicts previous theories about neutron star behavior.
A recent study suggests that dense star clusters in the universe could be 'factories' of binary black holes. Researchers predict that advanced observatories will detect over 100 merging black holes per year from these clusters.
Astronomers observed a record-setting flare from the blazar galaxy 3C 279, which became four times brighter than the brightest persistent source in the gamma-ray sky. The rapid fading of the flare was detected by NASA's Fermi Gamma-ray Space Telescope and other satellites.
A team of researchers discovered a massive black hole with nearly 7 billion solar masses in an otherwise normal, distant galaxy called CID-947. The finding contradicts previous theories on the co-evolution of galaxies and their central black holes.
Astronomers using NASA's Swift satellite have discovered concentric X-ray rings centered on a black hole, which form due to the 'echo' effect of light traveling through dust layers. The findings provide insights into the normally invisible interstellar dust and allow for better understanding of the black hole's behavior.
Astronomers have found a super-sized black hole in the early universe that grew faster than its host galaxy, challenging previous observations. The massive black hole, measuring 7 billion solar masses, is located in galaxy CID-947 and has a mass similar to that of a typical galaxy.
Researchers have localized the origin of high-energy gamma radiation in a jet emanating from a distant supermassive black hole. The discovery was made possible by a micro-gravitational lens effect that selectively amplifies light from different regions close to the event horizon.
Astronomers detected high-energy x-rays from five previously clouded supermassive black holes, supporting the theory of millions more existing but hidden from view. The research uses NuSTAR to study nine candidate black holes, confirming five were obscured by dust and gas.
Astronomers monitor the outburst of V404 Cygni, a black hole firing up in an X-ray nova. The data collected will help determine the type of object at its heart, providing insights into these rare events.
Researchers found strong outflows in ultra-luminous X-ray sources (ULXs), suggesting smaller black holes than expected. The team's observations shed light on ULXs and their impact on our understanding of supermassive black hole formation.
A new NASA simulation reveals that dark matter particles colliding in a black hole can produce strong, potentially observable gamma-ray light. This detection could provide new insights into both black holes and the nature of dark matter.
Astronomers using ALMA measured the mass of a supermassive black hole at the center of NGC 1097, a barred spiral galaxy 45 million light-years away. The black hole was found to be 140 million times more massive than our Sun.
Astronomers use Hubble Space Telescope to uncover the early formative years of quasars, finding that galaxy collisions and mergers drive their peak activity. The observations reveal the transitional phase in the merger-driven black hole scenario, providing new insights into the universe's brightest objects.
The detection of a supermassive black hole at the center of Messier 32, a satellite of the Andromeda Galaxy, reveals a 'quiescent' black hole with activity among the weakest yet found. The VLA's improved sensitivity allowed for the detection of radio emission from the black hole, which is roughly 90 times fainter than previous studies.
Physicist Samir Mathur proposes that the surface of a black hole is not a fiery firewall but rather a benign copy machine creating an imperfect hologram. This idea counters the prevailing firewall theory and has significant implications for our understanding of the universe as a hologram.
Researchers use ALMA to image massive galaxy SDP.81, located 11.7 billion light-years away, and reveal its inner structure, including giant molecular clouds and supermassive black hole at center of foreground galaxy.
Astronomers have discovered a rare collision between two high-speed knots of ejected matter in a supermassive black hole jet. The finding suggests that shocks produced by collisions within the jet accelerate particles and brighten the regions of colliding material.
Recent research found that supernovas work hand-in-hand with supermassive black holes to sweep out gas, interrupting star formation in galaxies. The partnership of these celestial events may help understand why massive galaxies stopped forming stars billions of years ago.
Astronomers have combined telescopes across the Earth to create the Event Horizon Telescope, which will take detailed images of the supermassive black hole at the center of the Milky Way galaxy. The South Pole Telescope has joined the EHT, bringing a two-to-three times increase in resolution to study black holes and test Einstein's the...
Researchers have found conclusive evidence of a black hole in Henize 2-10, a small, starburst galaxy. The team analyzed X-ray observations from four space telescopes over 13 years, confirming the presence of a supermassive black hole with a mass one million times that of the sun.
Researchers found a pulsing quasar in the Pan-STARRS1 Medium Deep Survey, which could be evidence of a binary supermassive black hole system. The discovery sheds light on the end stages of galaxy mergers and may aid in pinpointing thousands of merging supermassive black holes.
Astronomers have detected strong magnetic fields near the event horizon of a supermassive black hole using ALMA. The findings provide new insights into the mysterious mechanisms driving jet formation, with magnetic fields playing a crucial role in matter escape.
Astronomers have detected an extremely powerful magnetic field close to a supermassive black hole in a distant galaxy, revolutionizing our understanding of these cosmic phenomena. The discovery was made using the Alma telescope and reveals new insights into the structure and formation of black holes.
Researchers at RIT studied binary spinning black hole interactions, revealing a long-term spin dynamic that continuously flips the spin until merger. This process may affect the growth of black holes surrounded by accretion disks and alter galactic and supermassive binary black holes.
New research shows that black holes do not erase information, but rather preserve it through the interactions of particles emitted by the black hole. This discovery challenges the long-standing 'information loss paradox' in physics.
The Hubble Space Telescope has captured wispy, goblin-green objects outside quasar-host galaxies, revealing insights into galaxy behavior and energetic cores. These 'ghostly' structures are believed to have been illuminated by powerful ultraviolet radiation from supermassive black holes.
A team of astronomers using ESO's Very Large Telescope has observed a dusty cloud, known as G2, passing close to the supermassive black hole at the galactic center. The observations confirm that the cloud survived its closest approach and is likely a compact object surrounding a dense core.
Researchers connect a black hole's 'wind' to an outward torrent of cold gas in a galaxy, validating feedback mechanisms that influence galaxy evolution. The discovery resolves a long-standing puzzle and sheds light on the relationship between supermassive black holes and their host galaxies.
A study by University of Maryland scientists has found a functional link between supermassive black holes and molecular outflows in galaxies. The research suggests that the black holes' winds are powerful enough to drive these massive outflows, which remove star-making gas and shape the galaxy's fate.
The Canadian Space Agency has delivered its hardware contribution to the ASTRO-H mission, a flagship x-ray astronomy observatory. Professor Brian McNamara will study the effects of black holes on emergent galaxies, utilizing one of the most sensitive spectrometers in orbit.
Researchers at MIT and Michigan State University have developed a theory explaining how galaxy clusters regulate star formation. The study found that hot intracluster gas cools rapidly, condenses, and collapses to form new stars, but also triggers conduction and precipitation-driven feedback, which prevent excessive star birth.
A team of astronomers has found that galactic 'rain' may be the key to understanding why some galaxies are more productive at creating stars than others. The researchers analyzed X-rays from over 200 galaxy clusters using NASA's Chandra X-ray Observatory and discovered that massive black holes can slow down gas that helps form stars.
Astrophysicist Dr. Michael Kesden's research provides new insights into binary black hole mergers and their connection to gravitational wave detection. The solutions can significantly impact the study of black holes and the search for gravitational waves in the cosmos.
An international team of astronomers has found a huge and ancient black hole powering the brightest object in the early universe. The massive black hole is 12 billion times the size of our Sun and lives at the center of a quasar, emitting millions of billions of times more energy than the Sun.
Astronomers have found a super-bright quasar powered by the most massive black hole ever observed for an object from that time, located at a distance of 12.8 billion light years away. The quasar is 7 times brighter than the most distant known quasar and has a luminosity of 420 trillion solar units.
Researchers have discovered the brightest quasar in the early universe, powered by a massive 12 billion solar mass black hole. The quasar's luminosity is equivalent to 420 trillion suns and is seven times brighter than the most distant known quasar.
Researchers detected a nearly spherical stream of highly ionized gas streaming out of the quasar PDS 456, measuring the strength of ultra-fast black hole winds. The discovery reveals that these powerful winds can transfer energy back to their host galaxies and affect star formation.
Researchers used computer code to generate images of wormholes and black holes, discovering multiple images of stars and galaxies near rapidly spinning black holes. This technology has implications for astrophysicists studying black holes and the behavior of light in extreme environments.