Articles tagged with Black Holes
The Laser Interferometer Space Antenna (LISA) will enable astrophysicists to study gravitational waves emitted by black holes, which could unveil secrets about dark matter. Simulations suggest a connection between black hole merger rates and dark matter properties.
A RUDN physicist has demonstrated how to calculate the shape of a symmetrical wormhole based on its wave spectrum, providing new insights into the physics of black holes. The research uses quantum mechanical and geometrical assumptions to determine the shape and mass of a wormhole from observable properties such as red shift.
The RIT-led collaboration simulates neutron star mergers, linking them to the creation of heavy elements like gold and platinum. The project aims to improve understanding of binary neutron star merger processes, including electromagnetic signals and strong gravitational wave signatures.
A team of astronomers using Gaia data found twenty high-velocity stars racing towards the Galactic centre, raising questions about their origin. The stars' velocities could be a sign of supermassive black holes or binary systems in nearby galaxies.
Researchers at Rochester Institute of Technology have built the first simulation to predict light signals from supermassive black hole binaries nearing merger. The model combines information gathered from light- and gravitational waves, enabling scientists to identify these monster collisions with existing and future telescopes.
A new computer simulation simulates the effects of general relativity on spiraling supermassive black holes, predicting predominant UV and X-ray light emission. The simulation suggests that gas in these systems will glow predominantly in these wavelengths when two supermassive black holes collide.
Researchers from UC Berkeley used statistical analysis of 740 supernovas to conclude that primordial black holes can make up no more than 40% of the universe's dark matter. This finding suggests that heavy black holes or MACHOs do not exist as a type of dark matter.
Researchers study microscopic behavior of thermally stable SAdS black holes using Ruppeiner's thermodynamic geometry method, revealing attractive interactions among black-hole molecules. A new molecular potential is proposed for thermal stable SAdS black holes, providing a new perspective for exploring microstructure.
Researchers observed a strongly magnetized accreting X-ray pulsar using the Karl G. Jansky Very Large Array and NASA's Swift space telescope. The discovery reveals a new class of jet-producing sources, contradicting previous expectations about strong magnetic fields.
Researchers have detected matter falling directly into a black hole for the first time, with gas spiraling in at 30% of the speed of light. The discovery sheds light on chaotic accretion and its implications for supermassive black holes.
A simulation by Georgia Institute of Technology researchers suggests that direct collapse black holes (DCBH) would produce specific kinds of intense radiation, including X-rays and ultraviolet emission. They also predict the formation of massive metal-free stars, a finding unexpected at first but making sense in hindsight.
Astronomers are probing the mystery of how galaxies stop forming stars by studying a class of galaxies known as 'self-quenching' galaxies. These galaxies have gas being blown out at incredible speeds, but without evidence of black hole activity, suggesting alternative mechanisms may be at play.
The discovery reveals hundreds of individual galaxies in the cluster, which surrounds an extremely active supermassive black hole at the center. The quasar's light has obscured these galaxies, making them invisible to astronomers.
Researchers found a massive black hole with a mass of 3.5 million solar masses in the center of Fornax UCD3, a rare and densely packed galaxy. This discovery supports the tidal origin hypothesis for the formation of ultracompact dwarfs.
Scientists use X-ray polarimetry to determine the shape of matter near a black hole in binary system Cygnus X-1, clarifying the lamp-post model as the correct geometry. This discovery may help understand the evolution of black holes and galaxies.
Astronomer Daniel Wang will collaborate with Jorge Cuadra in Chile to study the massive black hole at the center of the Milky Way, aiming to understand its interactions with the galactic ecosystem. This research has significant implications for our understanding of galaxy-wide properties and astrophysical processes.
A new study from RIT reveals that galaxy outskirts are likely hunting grounds for dying massive stars and black holes. Researchers have identified a method to pinpoint the location of massive black holes using supernovae with collapsing cores, offering a promising approach to detecting gravitational waves.
Researchers at Ohio State University have calculated that the probability of an electron burning up in a black hole is negligible. The study challenges the firewall argument, which suggested a ring of fire around black holes, and instead supports the fuzzball theory, which describes black holes as giant balls of yarn.
Scientists used the Very Long Baseline Array to capture a quasar nearly 13 billion light-years away, revealing details about its composition and potential jet expansion. The bright object is thought to be one of the brightest radio emitters at an early age, offering insights into the first galaxies in the universe.
Researchers capture strong evidence for intermediate-mass black holes using satellite imaging and multiwavelength radiation flares. The discovery provides insight into the nature of these elusive objects and their potential prevalence in galaxy peripheries.
A team of scientists tracked a stellar death caused by a supermassive black hole ripping apart a star in the Arp 299 galaxy. The researchers directly imaged the formation and expansion of a fast-moving jet of material ejected when the black hole destroyed the star.
Researchers propose that small dust clouds can partially obscure the innermost regions of AGNs, causing changes in light emissions. This explanation resolves long-standing puzzles in astrophysics.
Researchers at the University of Colorado Boulder found that single activations of black holes occur more often in mismatched galaxy mergers, where one galaxy is huge and the other is puny. This is because violent collisions lead to less gas and dust falling onto black holes, making it less likely for two black holes to become active.
A new computer model developed by Dr. Jane Lixin Dai and Prof. Enrico Ramirez-Ruiz enables the categorization of variations in observations of Tidal Disruption Events, allowing for a better understanding of black hole properties and the study of rare celestial events.
A new study provides a unified model for understanding tidal disruption events, which occur when a star is torn apart by a supermassive black hole's gravity. The model reveals that viewing angle accounts for differences in observed properties of these events, offering a coherent framework for researchers to analyze.
Scientists from Goethe University Frankfurt and the Frankfurt Institute for Advanced Studies have developed a novel simulation code, ExaHyPE, to calculate gravitational waves on exascale supercomputers. This breakthrough allows for more accurate simulations of black hole mergers and other astrophysical phenomena.
The James Webb Space Telescope has the potential to observe the first stars in the universe, which formed about 200-400 million years after the Big Bang. The telescope can capture light from single stars with a massive amount of gravitational lensing, amplifying it up to 10,000 times.
A new study suggests that galaxies similar to the Milky Way should host multiple supermassive black holes, as predicted by a state-of-the-art cosmological simulation. The wanderings of these black holes are unlikely to affect our solar system due to their vast distances and low accretion rates.
Researchers at CU Boulder explore galaxy NGC 6240 with two supermassive black holes, revealing how stellar winds and black hole winds combine to power down star formation. The study creates a massive cloud of gas in the shape of a butterfly, significantly impacting the galaxy's evolution.
Astronomers used computer simulations to create images of accreting supermassive black holes in different gravity theories. They found that even highly non-Einsteinian black holes could mimic the appearance of standard black holes, highlighting the need for new techniques to distinguish them.
Researchers have developed a way to detect gravitational waves from faint black hole mergers, allowing them to study populations of black holes at vast distances. The new method is estimated to be one thousand times more sensitive than previous techniques, and will enable the detection of thousands of previously hidden black holes.
A study led by Columbia University astrophysicists has found a dozen black holes gathered around Sagittarius A*, the supermassive black hole at the center of the Milky Way Galaxy. The discovery confirms a major theory and opens up new opportunities to understand the universe.
Researchers have found that massive black holes in the center of most galaxies can disrupt and modify binary system orbits, leading to observable gravitational waves. This process could force binaries to merge sooner, producing detectable ripples in space-time.
Researchers from Aalto University and international partners have imaged newly forming jets of plasma from a massive black hole with unprecedented accuracy. The study resolves the jet structure mere hundreds of black hole radii away from its launching site, revealing unprecedented details of the jet formation region.
Research suggests that small galaxies with smaller black holes can also produce powerful gamma-ray jets, a phenomenon previously thought to be exclusive to massive galaxies. This discovery has the potential to shift our understanding of astrophysics and blur the lines between different types of active galaxies.
Researchers have identified a fourth ULX as a neutron star, shedding new light on how these objects can shine so brightly. The study found unusual dip in the ULX's light spectrum attributed to cyclotron resonance scattering, revealing strong magnetic fields around the neutron star.
Nicolas Yunes and Emanuele Berti will study colliding black holes with the Laser Interferometer Space Antenna (LISA) detector, which could help understand Einstein's theory of gravity. The data from LISA will analyze gravitational waves produced during mega-collisions, shedding light on extreme environments.
Astronomers have created the first high-resolution map of magnetic field lines around a black hole at the center of our galaxy. The map, produced using CanariCam infrared camera, reveals intricate details about gas and dust swirling around the supermassive black hole.
Researchers used spectroscopic measurements to confirm S0-2 has no significant companion, simplifying the upcoming gravity test. The discovery sheds light on the formation of young stars near the supermassive black hole at the center of the Milky Way galaxy.
A team led by Professor Pat Roche created the first high-resolution map of magnetic field lines in gas and dust swirling around a supermassive black hole at the centre of our Galaxy. The map shows intense infrared light and magnetic field lines within filaments of warm dust grains and hot gas, revealing their intricate relationship.
Researchers observed CO gas associated with the galactic disk, but found it unaffected by the strong ionized gas outflow from the galactic center. This challenges the widely accepted idea that radiation from galactic centers influences molecular gas and star formation activities.
Mathematical calculations show that certain types of black holes can break down determinism, leading to unpredictable futures. The discovery provides evidence for a violation of strong cosmic censorship in a theory of gravity and electromagnetism.
Astrophysicists develop model to test hypothesis about supermassive black holes and their impact on galaxy jets. The study suggests that part of the jet's power comes from the rotating black hole, which loses angular momentum as it emits energy. By measuring magnetic fields in jets, scientists can estimate this rotational energy loss.
Researchers predict characteristic light signals from supermassive black holes before merger using multimessenger astrophysics. The study simulates binary black hole collisions and provides insights into electromagnetic signals accompanying gravitational waves.
Researchers used ALMA to directly observe the rotation of a compact gaseous structure around a supermassive black hole in galaxy M77. The team found that the structure, called a torus, has an asymmetry and contains random motion, suggesting a possible violent history.
Researchers at CU Boulder discovered a mechanism explaining the persistence of asymmetrical stellar clusters surrounding supermassive black holes. This rate suggests that in post-galactic merger periods, orbiting stars could be flung into the black hole and destroyed at a rate of one per year.
An international team of researchers has confirmed that supermassive black holes in the centers of massive galaxies play a key role in regulating star formation. The study found that galaxies with more massive black holes form stars at a faster rate initially, but then experience slower star formation rates over time.
The study reveals that massive stars are much more abundant than previously thought, with a significant fraction of stellar mass in high-mass stars. The research has far-reaching consequences for the understanding of our cosmos, including an estimated 70% increase in supernovae and 200% increase in chemical yields.
A new universe simulation model, IllustrisTNG, provides fresh insights into how black holes influence dark matter distribution, heavy element production, and magnetic field origins. The simulation reveals a high degree of realism in predicting galaxy clustering patterns and the influence of supermassive black holes on the cosmos.
The IllustrisTNG project simulates the universe's large-scale structure, gaining insights into how supermassive black holes shape galaxies. The simulations predict a key transformation in galaxy life cycles, with black holes extinguishing star formation.
A new theory from Northwestern University predicts that molecules are not survivors but brand-new molecules formed in the winds with unique properties. These new molecules can thrive in the hostile environment of black hole winds.
A team of researchers, led by Dr Gianluca Sarri from Queen's University Belfast, has created the first small-scale replica of a gamma ray burst in a laboratory. The experiment used the Gemini laser to produce a mini gamma ray burst, confirming current models' predictions for magnetic field generation and gamma-ray emission.
New research from the University of Alberta reveals strong winds surrounding black holes throughout bright outburst events. The study, published in Nature, sheds light on mass transfers to black holes and their environmental effects.
A new study by UTSA professor Chris Packham and colleagues reveals weaker-than-expected magnetic fields around a black hole, contradicting previous models. The findings shed light on the complex relationship between black holes and galaxies, hinting at a deeper understanding of these cosmic phenomena.
Astronomers have discovered a star behaving strangely, orbiting an invisible black hole with four times the mass of the Sun. The finding reveals a dense nucleus within globular clusters, challenging previous theories on stellar-mass black holes.
Astrophysicists have determined that the maximum mass of neutron stars cannot exceed 2.16 solar masses through a combination of theoretical and observational research. The result was achieved by applying universal relations to data on gravitational-wave signals and electromagnetic radiation from merging neutron star events.
Statistical analysis suggests that supermassive black hole spin plays a role in generating high-speed jets and powerful radio waves. Nearly 8000 quasars were analyzed, with O III oxygen emissions found to be stronger in radio loud quasars, implying spin's importance.
Astrophysicists have discovered that the only known repeating fast radio burst (FRB) source is in an extreme environment, with measurements suggesting it may be caused by a black hole or other extreme astrophysical circumstances. The new findings raise questions about whether FRBs are a product of their environment.
Recent observations of FRB 121102 provide new data about the source of fast radio bursts, which are nearly 100 percent linearly polarized and suggest a source embedded in strong magnetic fields. The team plans to observe at higher frequencies to narrow the range of possible sources.
Researchers gained new understanding of relativistic jets' behavior through advanced supercomputer simulations, revealing how space-time is dragged into the rotation of rotating black holes. The study confirms that tilted disks lead to precessing jets that periodically change their direction in the sky.