Articles tagged with Black Holes
New study by University of Southampton confirms the universe's expansion is still accelerating as previously found, debunking 2025 claims that the cosmos was slowing. The team re-evaluated data using Type Ia supernovae to calculate vast cosmic distances and found no error in their methods.
Topological methods have become a robust testing ground in black hole physics, revealing distinctive topological attributes of diverse black hole solutions. The review summarizes recent work toward universal topological classifications of black holes, organizing them according to their global topological number and winding numbers.
The discovery reveals a surprisingly mature black hole at just 850 million years old, with an accretion disk resembling a flat pancake. This challenges the understanding of how supermassive black holes can grow and mature in a short amount of cosmic time.
Researchers have discovered the most distant dormant black hole yet detected, located over 10 billion light years away. The black hole's mass is approximately 6 billion times that of the sun, providing unprecedented insights into black holes in the early universe.
Astrophysicists at Northwestern University have discovered evidence of a powerful wind blowing from the Milky Way's central supermassive black hole, Sagittarius A*. The study resolves one of the longest-standing mysteries in astronomy and opens a new window into the physics at play in the center of the Milky Way. The team used five yea...
A team of astronomers used JWST to detect the motion of stars near a galaxy's center affected by a dormant black hole's gravity. The findings suggest that densest galaxies were sites of rapid black hole growth early in cosmic history.
New simulations show that a magnetic field can decrease the distance between forming binary protostars, explaining observed characteristics of Milky Way binary star systems. This process also gives insights into massive black hole evolution and merger formation.
Researchers have discovered the fastest wind near a supermassive black hole at ultraviolet wavelengths, driven by the quasar's surrounding matter disc. The wind's velocity is up to 30% the speed of light, making it unlike any hurricane on Earth.
The study suggests that massive galaxies formed through violent mergers, leading to a rapid burst of star formation and the growth of supermassive black holes. This process prevented these galaxies from producing new stars for over a billion years, leaving them as quiescent galaxies.
The LIGO-Virgo-KAGRA Collaboration has released a new catalog of gravitational-wave detections, revealing distinct sub-populations of merging black holes. These sub-populations are thought to arise from different formation pathways, including the collapse of gas clouds and hierarchical mergers between black holes.
Researchers from Vienna and Frankfurt have developed a mathematical formula describing critical collapse, where spacetime organizes into a regular structure that may form a black hole. This phenomenon is similar to the formation of ice crystals in liquid water.
The most massive black holes detected by gravitational waves were formed through repeated and violent collision events in densely populated star clusters. The study identifies two distinct populations, with high-mass systems showing rapid spins and a signature consistent with cluster mergers.
Astronomers used TACC supercomputers to develop models of Little Red Dot formation, finding better agreement with Direct Collapse Black Hole theories. Researchers also analyzed JWST data using a 'genetic technique' to understand the history of these enigmatic cosmic objects.
A study led by University of California, Riverside graduate student Yash Aggarwal suggests that dark matter decays could have seeded the direct collapse of galaxies into giant black holes. The research found that a window of dark matter masses between 24 and 27 electronvolts could produce conditions for black hole formation.
A team of astrophysicists has developed a detection system that uses gravitational waves to map out the locations of merging black holes. The new protocol demonstrated by NANOGrav offers a vital way to explore and understand the universe, similar to how X-rays and radio waves did in earlier eras.
Researchers analyzed gravitational-wave data from LIGO and Virgo detectors, revealing an oval orbit just before merger, which is unlikely according to theoretical models. The study corrects underestimated black hole mass and overestimated neutron star mass, suggesting a birthplace in an environment with many interacting stars.
The latest catalog more than doubles the number of gravitational-wave detections made by LIGO, Virgo, and KAGRA observatories, revealing a kaleidoscope of cosmic collisions. The LVK's Gravitational-Wave Transient Catalog-4.0 comprises 128 new detections from a nine-month period.
Researchers discovered a star in the Andromeda Galaxy that vanished without going supernova, instead collapsing directly into a black hole. The team's analysis revealed the process of stellar collapse and provided evidence for convection's role in shaping a black hole's outer layers.
Researchers propose a new way to observe tightly bound supermassive black hole binaries using gravitational lensing and starlight. The method could reveal key properties of the underlying black hole binary, including masses and orbital evolution.
Researchers propose an alternative explanation for the galactic centre: an enormous clump of mysterious dark matter exerting gravitational influence. The model also explains the galaxy's large-scale rotation and predicts a unique cosmic structure.
Researchers have been tracking the unusual astronomical event for four years and predict that the energy will peak in 2027. The black hole's emission has increased exponentially, reaching 50 times its original brightness.
A team of physicists at UMass Amherst has proposed a new model for black holes, the 'dark charge' model, which explains high-energy neutrinos and solves cosmic mysteries. The model suggests that quasi-extremal primordial black holes, with a 'dark charge,' could be the missing link in explaining the universe's fundamental nature.
A team of astronomers has discovered a supermassive black hole with extreme growth rates, contradicting current models. The black hole is emitting bright X-rays and radio waves, hinting at unknown physical mechanisms. This finding provides a rare glimpse into time-variable black hole growth in the early Universe.
Researchers at Maynooth University found that chaotic conditions in the early Universe triggered the rapid growth of smaller black holes into super-massive behemoths. This breakthrough resolves a long-standing puzzle, suggesting that 'garden variety' stellar mass black holes can grow at extreme rates.
Astronomers have captured a vivid portrait of a 'reborn' black hole, likened to the eruption of a 'cosmic volcano', in the radio galaxy J1007+3540. The black hole's newly ignited jets are being bent and distorted by the massive galaxy cluster environment.
Researchers from the University of Copenhagen have explained the mysterious 'red dots' seen in James Webb Space Telescope images as young black holes. The discovery provides insight into how the universe's first black holes were born and sheds light on their early development.
Astronomers have spotted an ancient galaxy that was slowly starved of fuel by a supermassive black hole. The galaxy's lack of cold gas prevented it from forming new stars, despite its relatively young age. Repeated episodes of heating and gas removal by the black hole likely drained the galaxy's fuel in as little as 16-220 million years.
Researchers at Kyoto University observe a peculiar supernova explosion, SN 2022esa, which reveals the birth of a black hole binary. The study provides new direction for understanding massive star evolution and black hole formation.
Astronomers have discovered that black holes don't just consume matter — they manage it. Researchers found that black hole binary systems switch between powerful jets and energetic winds—never producing both simultaneously—and both types of outflows carry away comparable amounts of mass and energy.
Evidence suggests Sagittarius A* flared dramatically within the past few hundred to 1,000 years, according to X-ray emissions observed by XRISM. The findings unveil new details of supermassive black hole evolution and provide lessons about our cosmic home.
Researchers have found a galaxy cluster with scorching hot gas just 1.4 billion years after the Big Bang, five times hotter than predicted, and containing three supermassive black holes that pumped energy into the surroundings. This discovery could upend current models of galaxy cluster formation and evolution.
Researchers will use revolutionary technology to transform understanding of extreme environments, revealing how black holes behave and evolve. The project aims to deliver dynamic gravitational tomography, creating 3D movies showing plasma flows around black holes.
Scientists have found that active galactic nuclei are two to six times more common in merging galaxies than non-merging counterparts. Galaxy mergers were most strongly associated with bright, dust-cloaked supermassive black holes linked to rapid growth.
New research reveals the structure of matter surrounding supermassive black holes has changed over cosmic time, challenging a fundamental assumption about their behavior. The study combines new X-ray observations to explore the relation between X-ray and ultraviolet light intensity of an unprecedentedly large sample of quasars.
Astronomers discover galaxy Virgil with dual personality – ordinary in visible light but harboring massive black hole. JWST observations reveal hidden nature of Virgil, challenging current models of black hole formation.
Astronomers discovered a never-seen-before blast from a supermassive black hole, whipping up powerful winds at 60,000 km per second. The event was triggered by an X-ray flare and formed in just one day, providing new insights into the magnetism of active galactic nuclei (AGNs).
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.
Astronomers have observed a record-breaking gamma-ray burst that lasted nearly seven hours, challenging existing models for these events. The burst's unusual duration and properties suggest multiple possible causes, including the collapse of a massive star or the collision of exotic stellar remnants.
Researchers at the University of Amsterdam developed a new model to track dark matter's effect on black holes' gravitational waves. The study focuses on extreme mass-ratio inspirals, where a smaller object orbits a massive black hole, emitting gravitational waves that can reveal dark matter's distribution around black holes.
Researchers developed a comprehensive model of luminous black hole accretion, including radiation flows and interactions with surrounding gas. Their simulations reproduce consistent behaviors across various black hole systems, providing insight into extreme nonlinear processes.
Physicists discovered connections between Ramanujan's formulae for pi and fundamental physics theories like conformal field theories. The formulas, developed in the early 20th century, yield efficient calculations for phenomena like turbulence and black holes.
Groundbreaking simulations reveal how black holes create dazzling light shows by material zipping around them. The results could help explain hundreds of faintly luminous objects spotted in the early universe.
Astronomers detected faint 'starquakes' in the companion star of Gaia BH2, allowing them to measure its core properties with remarkable precision. The star's makeup contradicts its age, suggesting it acquired extra mass from a companion through a merger.
Scientists use XL-Calibur telescope to measure polarization of light around Cygnus X-1 black hole, gaining insights into matter's fall and energy release. The observations will be used to test computer simulations and shed light on black hole physics.
The international collaboration has detected a significant fraction of gravitational signals, constituting two-thirds of approximately 350 signals detected to date. The analysis of the data has led to numerous new discoveries and a deeper understanding of compact binary systems and fundamental physical processes in the universe.
A research team at the Purple Mountain Observatory confirms Stephen Hawking's prediction that a black hole's horizon area cannot shrink when two black holes merge. The analysis of GW230814 shows strong support for the black-hole area law, validating general relativity in extreme astrophysical environments.
Astrophysicists used simulations to uncover the missing piece that previous studies had overlooked: magnetic fields. They found that strong magnetic fields can slow down a black hole and carry away some of its stellar mass, creating lighter and more slowly spinning black holes.
Physicists compare black hole shadow images to alternative theories of gravity, showing differences in extreme cosmic objects. High-resolution measurements could test Einstein's theory and confirm or refute exotic possibilities.
Researchers developed a simulation method to model rotating regular black holes, which naturally show time-varying patterns of light and shadow. This breakthrough enables faster exploration of different black hole configurations without requiring delicate tuning.
Two distant black hole mergers, measured one month apart in 2024, provide insights into the nature and evolution of deep-space collisions. The mergers validate fundamental laws of physics predicted by Einstein and furthers the search for new elementary particles with potential to extract energy from black holes.
A team of astronomers has discovered the first tidal disruption event producing bright radio emission outside the center of a galaxy. The event revealed the fastest-evolving radio emission ever observed from a black-hole-driven stellar disruption, suggesting delayed and complex processes in the aftermath of the disruption.
Astronomers have captured the first-ever radio image of two black holes orbiting each other at the centre of a quasar called OJ287. The observation confirms the existence of black hole pairs and provides insight into their orbital motion.
Researchers at Goethe University Frankfurt used complex simulations to study the origin of powerful jets emitted by black holes. They discovered that magnetic reconnection is involved in extracting rotational energy and powering these jets.
A team of scientists from Princeton University and PPPL successfully recreated the star formation mechanism in a laboratory setting, validating astrophysical theory. The achievement marks over two decades of persistent effort and combines experimental ingenuity, theoretical insight, and advanced computational modeling.
Recent detection of a record-setting neutrino may be the first evidence of Hawking radiation from a primordial black hole. If confirmed, it would indicate that PBHs make up most of dark matter in the universe.
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.
The Event Horizon Telescope collaboration unveils dynamic environment with changing polarization patterns near M87*'s supermassive black hole. The new images show how the environment around the black hole may be changing more than previously thought.