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 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 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.
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 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.
Researchers developed a model that predicts black carbon's direct radiative effect with high accuracy, considering particle size and mixing state. The study finds that accurately describing these factors is crucial to understanding black carbon's contribution to climate change.
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.
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.
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.
A new study reveals that police killings of unarmed black Americans have a significant impact on the mental health of black American adults in the general population. The quasi-experimental study found an estimated 55 million excess poor mental health days per year among black American adults due to police killings.
A new study published in The Lancet found that police killings of unarmed black Americans are associated with worse mental health among other black Americans. Researchers surveyed nearly 40,000 black Americans and estimated that these deaths contribute to 1.7 additional poor mental health days per person every year.
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.
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.
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.
A study published in the Journal of Advertising Research found that both Black and White teens perceive Black-oriented media as being targeted towards them, suggesting the potential for increased profitability when marketed to a broader audience. The study surveyed 1,900 adolescents ages 14-17 about their movie preferences.
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.
New research from Binghamton University finds that bringing black parents into schools helps shift cultural disconnects between black families and predominantly white teachers. The Parent Mentor Program empowers black parents to advocate for their children and improve schooling experiences.
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.
The Black Lives Matter movement argues that capital punishment is a racist practice that devalues Black Lives. Research shows that Black Americans are disproportionately impacted by the death penalty, with specific racial biases affecting jury perceptions and decisions.
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.
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.
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.
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.
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 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 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.
Scientists successfully detected holes and identified their trapping sites after photoexcitation, revealing that photo-excited holes become trapped in substrate at singly charged oxygen vacancies. The detection opens up new insights for the development of devices and nanodevices based on transition metal oxides.
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 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.
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.
Researchers at Helmholtz-Zentrum Berlin discover why perovskite solar cells function despite numerous holes. The thin layer built up in the film prevents short circuits by recombination barrier and electron transport layer separation.
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.
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.
Researchers found supermassive black holes prevent star formation in smaller galaxies by driving powerful winds that heat gas, quenching the process. This discovery sheds light on how dwarf galaxies, composed of up to 100 million stars, evolve and affects our understanding of galaxy evolution.
A new study published in Nature shows that the mass of a galaxy's central black hole determines when its star formation history stops. The study found a continuous interplay between black hole activity and star formation throughout a galaxy's life, with bigger black holes quenching star formation faster.
Researchers at Kyoto University have proposed a new theory on the formation of binary black holes within collapsing stars. Their study suggests that these black holes could form through dynamical fragmentation of the star's inner core, leading to two fragments becoming black holes and orbiting each other.
Astronomers measured the magnetic field of a black hole in a binary system using data from a sudden flare. The field was found to be substantially weaker than expected, providing new insights into how black holes consume material.
Scientists have discovered black holes have significantly weaker magnetic fields than previously thought, with measurements about 400 times lower than estimated. This finding deepens our knowledge of how matter behaves under extreme conditions and could impact nuclear fusion power and GPS systems.
A team of astronomers discovered the most-distant supermassive black hole ever observed, located in a luminous quasar and emitting light from 5% of its current age. The black hole has a mass 800 million times that of our Sun, posing a challenge to theories of supermassive black hole growth.
Astronomers have discovered a quasar harboring an 800 million solar mass black hole, located in a primarily neutral Universe at a redshift of 7.54. The finding challenges our understanding of the early growth of supermassive black holes and their host galaxies.
Astronomers have detected an extremely distant supermassive black hole with a mass 800 million times that of our Sun, pushing the boundaries of understanding the early cosmos. The discovery, based on data from Gemini Observatory, reveals the universe was only 5% of its current age at this distance.
Researchers propose using gravitational wave experiments to detect merger events at redshifts greater than 40, which could indicate the presence of primordial black holes or non-Gaussianity in the early universe. A detection would bolster theories about dark matter, while a non-detection would cast doubt.
The Zwicky Transient Facility's (ZTF) new survey camera captures hundreds of thousands of stars and galaxies in a single shot, taking its first image of the sky, dubbed 'first light.' ZTF aims to discover objects and events varying in brightness over time, including explosive supernovae, hungry black holes, and asteroids/comets.
Astronomers predict that gravitational waves generated by the merger of two supermassive black holes will be detected within 10 years using pulsar timing array data. The study estimates a 100% chance of detecting something in 10 years, with bigger galaxies offering longer detection windows.
The Cosmos code, developed by the University of Texas at Austin, has been optimized for the Stampede2 supercomputer using XSEDE ECSS resources. This allows for accurate simulations of black hole jets and other astrophysical phenomena, providing new insights into the mysteries of space.
Researchers at RIT suggest that outer gas disks of big spiral galaxies are suitable for hosting orbiting black holes and merging massive black holes. This discovery could help explain how black-hole pairs form and provide a new way to study the universe using gravitational waves and traditional light measurements.
Researchers at Ural Federal University found that a popular theory of gravity is flawed when applied to real-world astrophysical conditions. They propose new Horndeski models to stabilize black holes, addressing modern physics prerequisites and inconsistencies. The study aims to develop a new theory of gravity meeting all requirements.
Estimates of early industrial emissions of black carbon are inexact due to limited sampling before the mid-1950s. Researchers found regional black carbon concentrations peaked during the first decade of the 20th century and were linked to coal consumption, with concentrations becoming decoupled after 1960.
A new UCLA study shows that black tea alters energy metabolism in the liver by changing gut metabolites, promoting weight loss and improving lean body mass. Both black and green tea change the ratio of intestinal bacteria, with black tea stimulating the growth of beneficial bacteria.
Researchers used super-computer simulations to recreate the formation of a massive black hole from supersonic gas streams left over from the Big Bang. The study suggests these black holes could be the source of the largest and oldest super-massive black holes in the Universe, posing a challenge to existing theories.