Articles tagged with Black Holes
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Four new studies provide conclusive evidence for the existence of intermediate-mass black holes, offering a window into the universe's first stars. The researchers used data from LIGO detectors to identify these heavy gravitational-wave events, paving the way for future observations using space-based missions like LISA.
A team from Norwegian University of Science and Technology proposes that supermassive black hole winds accelerate particles to create the mysterious high-energy radiation. The winds, which can reach speeds of up to half the speed of light, may be responsible for the creation of ultra-high-energy cosmic rays.
Astronomers have found nearly 100 examples of massive black holes devouring stars in galaxy cores. A new study reveals a stealth black hole tearing apart a star 2,600 light years away from the galaxy's central massive black hole.
A landmark study has established a new benchmark in modeling black hole collisions and gravitational waves. The research provides unprecedented precision in calculations crucial to understanding gravitational waves, revealing Calabi-Yau three-fold periods within the radiated energy and recoil.
The researchers calculated that the universe will decay via Hawking-like radiation in approximately 10^78 years. This time frame applies to white dwarf stars and neutron stellar black holes, both of which take the same amount of time to evaporate. The findings contradict previous estimates and shed new light on the theory of relativity.
Astrophysicist Jeremy Darling is pursuing a new method to measure the universe's gravitational wave background by analyzing the motion of quasars. His research could unravel the physics of gravity and help scientists understand galaxy evolution and fundamental assumptions about gravity.
Astronomers used NASA's NICER to map debris from cosmic black holes, revealing the physical environment of repeating X-ray outbursts near monster black holes. The study found that each impact resulted in about a Jupiter's worth of mass reaching expansion velocities around 15% of the speed of light.
Researchers explore alternative models of black holes without singularities, which could be distinguishable from standard black holes through subtle deviations in predictions. Observational tests using sophisticated instruments and different channels may reveal clues about internal structure.
A scientist from Tokyo Metropolitan University has resolved the thirty-year mystery of dissonance in gravitational waves emitted by a black hole. The phenomenon was caused by resonance between two distinctive modes, which is not a rare incident but turns up universally in a range of modes.
Researchers have designed an optical device that functions as an optical black hole or white hole, behaving like a cosmic object that either swallows or repels light. This device relies on coherent perfect absorption of light waves and offers new possibilities for manipulating light-matter interactions.
A distant galaxy's black hole has suddenly activated, producing rare and intense X-ray light bursts. The phenomenon, known as a quasiperiodic eruption, challenges existing models of black hole behavior and offers an unprecedented opportunity for astronomers to study the energetic events powering these cosmic monsters.
Researchers have discovered key conditions needed for a stellar black hole to create plasma jets, including the rapid shrinkage of superheated gas material towards the black hole. This study reveals that jets form under dynamic conditions, providing insights into galaxy evolution and the properties of black holes.
Researchers found a high-velocity star ejected from a globular cluster at an extreme velocity of nearly 550 km/s, suggesting the presence of an intermediate-mass black hole. The star's similarities with the cluster's chemical composition and age provide strong evidence for the IMBH's existence.
Physicists have discovered a new theoretical framework called supermazes that redefine the concept of black holes, providing a more universal picture of their microstructure. Supermazes are based on string theory and offer a detailed portrait of the microscopic structure of brane black holes.
Researchers found that AGN radiation can have a paradoxically nurturing effect on life, especially when oxygen levels are present, allowing the planet's protective ozone layer to grow and shield it from radiation. This process can help ensure life's success, but its effects depend on how close the planet is to the source of radiation.
Astronomers have discovered a cosmic anomaly that challenges our understanding of the universe, revealing a spiral galaxy harboring a supermassive black hole billions of times the Sun's mass. This discovery forces us to rethink how galaxies evolve and how supermassive black holes grow in them.
Researchers propose a revolutionary link between time and dark energy, suggesting that the mysterious force driving the universe's expansion may be used to measure time. The study could pave the way for groundbreaking new fundamental theories and breakthroughs in our understanding of the universe.
The Einstein Probe mission aims to probe X-ray transient sources and explosive astrophysical phenomena, contributing significantly to astronomical research. The mission's sophisticated observational instruments will enhance the detection of sudden X-ray transients and monitor variability in known celestial sources.
The Dark Energy Spectroscopic Instrument (DESI) has discovered a treasure trove of actively feeding black holes in small galaxies, revealing surprisingly few are of intermediate mass. The team identified 300 new intermediate-mass black hole candidates and 2500 active black holes in dwarf galaxies.
A Northwestern University-led team observed Sagittarius A*, the Milky Way's supermassive black hole, exhibiting a constant stream of flares with no periods of rest. The level of activity varies widely, from short interludes to long stretches, and appears to be random.
Researchers used advanced computer simulations to explore how magnetic fields interact with black holes, revealing that between 10% and 70% of extracted energy is channeled into jets. The findings could redefine our understanding of black hole role in shaping galaxies.
A new optical technology developed at UC Riverside enables gravitational-wave detectors to reach extreme laser powers, overcoming limitations that hinder the detection of cosmic phenomena. This breakthrough is expected to significantly expand our view of the universe, particularly in the earliest stages of its history.
A University of Barcelona team has described the creation of regular black holes from gravitational effects without exotic matter. The study simplifies conditions necessary for regular black holes and provides a mechanism to resolve singularities in general relativity.
Astronomers have discovered a key ingredient within the Phoenix cluster that explains its mysterious starburst, using NASA's James Webb Space Telescope to observe the cluster. The detection of warm gas confirms that the Phoenix cluster is actively cooling and able to generate a huge amount of stellar fuel on its own.
A research team has found that dark matter makes up about 60% of the mass of two galaxies at a redshift of 6, shedding light on its role in galaxy evolution. This discovery offers new insights into the intricate relationship between dark matter and supermassive black holes.
Scientists have discovered that even low-mass microquasars can accelerate particles to high energies, producing gamma-ray signals. This finding challenges the long-held belief that only high-mass systems are capable of particle acceleration.
The EHT Collaboration unveils a new analysis of the supermassive black hole at the heart of galaxy M87, combining observations from 2017 and 2018. The study confirms the presence of a luminous ring with a shifted brightest region, indicating turbulent accretion disk dynamics.
Researchers use Large Binocular Telescope Interferometer to observe active galactic nucleus, revealing dusty outflowing wind and radio jet feedback. The study provides new insights into AGN's interaction with host galaxies.
Astronomers have observed a phenomenon where a supermassive black hole forms plasma jets in real-time, marking the first-ever observation of this process. The discovery provides new insights into how black holes interact with their host galaxies and could help scientists understand the evolution of the universe.
Priyamvada Natarajan has made groundbreaking contributions to understanding dark matter substructure, black hole formation, and their impact on the universe. Her work has laid the foundation for modeling black hole populations across the lifetime of the universe.
Radio data reveals jets of ionized gas extending from either side of the black hole, with a total size of about half a light-year. The observation suggests that the launch of a black hole jet has never been observed before in real time, providing critical clues to why only a fraction of monster black holes produce powerful plasma jets.
Astronomers have discovered a rare spiral-shaped galaxy hosting a young jet, challenging the conventional wisdom on quasar formation. The galaxy, J0742+2704, features a supermassive black hole and brilliant hot disks of swirling gas that can blast off jets of material.
Astronomers have observed the same supermassive black hole exhibiting unprecedented behavior, with X-ray flashes increasing in frequency over two years. The source of these flashes is believed to be a spinning white dwarf core orbiting around the black hole's edge.
Researchers suggest that gravitational collapse in the early universe could give rise to incredibly dense point-like objects, namely visible or naked singularities. This ultra-strong gravity condition provides a unique opportunity to probe new fundamental aspects of physics, including quantum gravity. The possibility of PNaSs accountin...
Astronomers at MIT used a novel technique to determine the precise location of a fast radio burst, finding it likely originated from the magnetosphere around a rotating neutron star. The study provides conclusive evidence that fast radio bursts can emerge from this highly magnetic environment.
Astronomers detect a massive black hole in the early universe that is lying dormant due to low accretion rates, sparking debate about its formation and growth. The discovery challenges standard models of black hole development and suggests that these monsters may be born big or go through periods of hyperactivity.
A team of researchers used James Webb Space Telescope data to find massive galaxies with supermassive black holes showing no sign of star formation, supporting the theory that SMBHs can suppress gas supply and halt galaxy growth. The study provides new insights into the co-evolution of SMBHs and galaxies.
An international team of researchers has found the first binary star in the immediate vicinity of Sgr A* by analyzing individual observations of dust sources. The discovery provides new clues to how young stars form close to the supermassive black hole, solving a long-standing mystery.
The Event Horizon Telescope has taken detailed measurements of a galaxy's supermassive black hole and its powerful jets. The research reveals strong magnetic fields close to the event horizon and estimates their strength, consistent with previous estimates.
Astronomers have discovered the first binary star orbiting close to Sagittarius A*, a supermassive black hole at the centre of our galaxy. This finding provides new insights into how stars survive in extreme environments and could pave the way for detecting planets near black holes.
A team of scientists captured an astonishing image of a gamma-ray flare emanating from the supermassive black hole at the center of galaxy M87. The flare was tens of millions of times larger than the event horizon and lasted about three days, providing crucial insights into particle acceleration near black holes.
Researchers used pulsar accelerations and stellar velocities to determine the presence of a cluster of stellar mass black holes at the centre of Omega Centauri. The study refines understanding of the formation of these intermediate-mass black holes, which could bridge the gap between stellar and supermassive black holes.
Astronomers have used the Hubble Space Telescope to study a quasar up close, revealing complex structures around a supermassive black hole. The observations show a mysterious L-shaped filamentary structure and small satellite galaxies falling into the black hole, offering insights into quasar formation and galaxy interactions.
Optical spring tracking reduces noise and improves signal clarity for gravitational-wave detectors, enabling scientists to observe distant cosmic events more effectively. The technique has the potential to expand our understanding of black holes and neutron stars as they merge.
Researchers propose that small black holes born in the early universe could have left behind hollow planetoids and microscopic tunnels, potentially detectable with telescopes or by monitoring old materials. The study suggests a low probability of primordial black hole passage but emphasizes the potential for discovery.
Researchers have developed a mathematical model that provides strong evidence for the cosmic censorship conjecture in three dimensions, suggesting singularities inside black holes will always be hidden. The model has implications for quantum gravity and advances efforts to understand thermodynamic properties of black holes.
The National Center for Supercomputing Applications (NCSA) has received the Readers' Choice Award: Best HPC Collaboration and Editors' Choice: Best Use of HPC in Physical Sciences. This is the 14th consecutive year NCSA has been honored with an HPCwire award.
Researchers analyzed 21 distant quasars to find a connection between X-ray emission and wind speed, indicating rapid accretion of matter. This study challenges physics limits and provides insights for future X-ray missions.
Scientists have found that black holes inherit their magnetic fields from their parent stars, specifically the surrounding disk of swirling matter during collapse. This discovery resolves a longstanding mystery and opens doors for further studies of jets.
Researchers observe oscillating pattern in light from binary supermassive black hole system AT 2021hdr, shedding light on tidal disruption of gas cloud. The system, located 1 billion light-years away, contains 40 million times the Sun's mass and will collide in approximately 70,000 years.
A team of astrophysicists has developed a novel method to search for black hole light echoes, which can provide direct evidence of photons circling black holes due to gravitational lensing. The technique allows for the measurement of black hole mass and spin, revolutionizing our understanding of black hole physics.
Astronomers observe low-mass supermassive black hole consuming matter at over 40 times the theoretical limit, providing new insights into rapidly growing black holes. The discovery reveals a possible mechanism for black holes to exceed their Eddington limit, sparking further investigation.
A recent study examines the internal nature of black holes and their implications for astrophysical observations. The research reveals that dynamic black holes are subject to significant instability over short timescales, leading to deviations from known models.
Researchers investigate universe expansion, Big Bang, black holes, and dark energy using a time-reversal model. They propose an explanation for the Big Bang and explore interior structure of black holes.
A team of researchers has discovered a new pattern in the high-energy jet of particles blasted by the supermassive black hole at the center of galaxy Centaurus A. The study found that the speed of one knot in the X-ray jet was at least 94% the speed of light, significantly faster than previously measured speeds using radio observations.
Researchers found evidence that black holes contain dark energy, which could explain its mysterious nature. The Dark Energy Spectroscopic Instrument provided data showing a correlation between the growth of black holes and the increase in dark energy density over time.
Astronomers have observed a black hole triple system for the first time, featuring a central black hole consuming a star and a distant companion that orbits every 70,000 years. The discovery raises questions about the origins of the black hole itself.
Researchers at the University of Minnesota developed a new technique to visualize 2D radio images in 3D, revealing distinct shapes and structures of galaxies and massive black holes. The technique uses Faraday rotation to estimate distances and analyze material interactions, potentially altering previous models.
Scientists at University of Tsukuba have discovered the first evidence of precession in ultraluminous accretion disks due to a black hole's spin. This phenomenon causes periodic fluctuations in luminosity and affects the direction of emitted radiation, shedding light on the influence of BH spin on cosmic phenomena.
Two UMD Astronomy space probes, AXIS and PRIMA, have advanced to the next round of consideration for a $1 billion NASA mission. AXIS will study X-rays from stars and black holes, while PRIMA will explore far-infrared radiation to understand galaxy formation.