A new UCLA-led study finds that Black men face high levels of discriminatory indignities on a nearly daily basis, regardless of income level. The study's results indicate that structural barriers limit the benefits of economic achievements for Black men, increasing the risk of adverse physical and mental health outcomes.
Astronomers have found the most distant cosmic jet, providing insights into how galaxies evolved and supermassive black holes grew when the universe was only 780 million years old. The quasar, with a massive black hole 300 million times more massive than the Sun, has a jet of fast-moving particles about 1,000 years old.
A new study advances a decisive test to investigate the origin of solar-mass black holes, which may be connected to dark matter. The research suggests that such black holes could have formed in the early Universe, contradicting conventional stellar evolution astrophysics.
Research published by the American Psychological Association found that black women and girls are more likely to engage in exercise and eat healthy when faced with discrimination. The study suggests that optimism plays a role in this positive response, contrasting with avoidant coping strategies seen in less optimistic individuals.
A new theoretical study suggests that supermassive black holes could form directly from dark matter in high-density regions, contradicting current understanding of their formation. This proposal has key implications for cosmology and the early Universe, potentially explaining how supermassive black holes grew so quickly.
The stellar-mass black hole in the Cygnus X-1 binary system was found to have a mass 21 times that of the Sun and is rotating at a speed close to the speed of light. This discovery challenges astronomers' thoughts on how black holes formed.
A new study using the Very Long Baseline Array (VLBA) has refined the distance to Cygnus X-1 and found its black hole mass to be approximately 21 solar masses, exceeding current stellar evolution models. This massive black hole suggests that lower mass loss through stellar winds during progenitor star evolution may have occurred.
Astronomers have found a concentration of smaller black holes at the center of the globular cluster NGC 6397, contradicting the long-held assumption of an intermediate-mass black hole. The discovery was made using Hubble data and Gaia space observatory measurements.
Astronomers used Hubble and Gaia data to analyze the positions and velocities of stars in NGC 6397, finding strong evidence for invisible mass in the dense central regions. The bulk of this unseen mass is likely made up of stellar-mass black holes, rather than white dwarfs or neutron stars.
Researchers from the University of Nottingham have demonstrated that backreaction can be simulated in a laboratory experiment using a specially designed water tank. The study found that waves sent into an analogue black hole significantly changed its properties, with effects visible to the eye.
Researchers have discovered a phenomenon where extreme black holes exhibit 'gravitational hair', a measurable quantity that depends on the black hole's formation process. This finding violates the 'no hair' theorem, which states that all black holes are identical and can be fully characterized by their mass, spin, and charge.
Researchers found that certain head-on galaxy collisions can clear matter from the galactic nucleus, reducing the activity of central black holes. This discovery could help us understand the evolution of our Milky Way and its interactions with smaller galaxies.
Researchers found that medicated drops can close small macular holes within two to eight weeks, allowing some patients to avoid surgery. The treatment was most effective for patients with holes less than 200 micrometers in diameter, and showed promise as an alternative to traditional vitrectomy surgery.
A new study using NASA's Chandra X-ray Observatory reveals that three galaxies colliding can lead to triple mergers with growing supermassive black holes. The research found one single, four double, and one triple merger system, shedding light on how these events shape galaxy growth.
Physicists Luca Comisso and Felipe Asenjo propose a new method to extract energy from rotating black holes by breaking and reconnecting magnetic field lines. This process could accelerate plasma particles to negative energies, allowing for massive amounts of energy extraction with an efficiency of up to 150%.
Astronomers have observed a luminous quasar 13.03 billion light-years from Earth, providing insight into the formation of massive galaxies in the early universe. The quasar hosts a supermassive black hole equivalent to 1.6 billion suns and shows evidence of an outflowing wind, challenging current models of black hole formation.
The most distant quasar known has been discovered, powered by the earliest known supermassive black hole weighing over 1.6 billion times the mass of the Sun. This fully formed distant quasar is also the earliest yet discovered, providing insight into massive galaxy formation in the early Universe.
Astronomers have discovered the most distant quasar yet found, J0313-1806, which is 13 billion light-years away and powered by a supermassive black hole. The discovery provides valuable insights into how massive galaxies and their supermassive black holes formed in the early Universe.
Anti-Black racism in healthcare has significant negative effects on the physical and mental health of Black people. The authors recommend dismantling systemic racism through training, data collection, and increased accessibility for Black students.
Researchers at Kavli IPMU propose a novel scenario for primordial black hole formation, suggesting they could account for all or part of dark matter. They also suggest that PBHs could be responsible for some gravitational wave signals and seed supermassive black holes found in the center of our Galaxy.
A new study by UMBC physicists finds that black hole jets primarily release energy in the molecular torus, rather than the broad-line region. This resolves a decades-long debate on jet formation and structure, offering clues to how jets initially form and dissipate energy.
Computer simulations show that neutron star mergers can lead to black hole formation under specific conditions. The threshold mass for collapse depends on the properties of dense nuclear matter.
A recent study published at the American Heart Association's Scientific Sessions 2020 found that U.S.-born Black women have a higher risk of developing preeclampsia compared to Black women who immigrated to the country. The study analyzed data from nearly 4,000 Black women in Boston and found that foreign-born Black women had a 26% low...
RIT scientists developed record-breaking simulations of unequal mass black hole mergers to aid the development of next-generation gravitational wave detectors. These simulations calculate key properties of merged black holes, enabling the comparison of signals received by advanced detectors.
Researchers use advanced simulation to model large mass ratio black hole merger, predicting characteristics of ultimate merged black hole and its speed. The simulation's success could help plan future gravitational wave detectors and answer mysteries about black holes.
A RUDN University physicist created a software solution to identify the instability regions of black holes, ensuring their mathematical models are physically viable. The approach uses Einstein's equation with added corrections and identifies critical coupling constants that affect model stability.
A team of scientists has created the most detailed family portrait of black holes to date, analyzing gravitational-wave data from LIGO and Virgo detectors. The study reveals new clues about black hole formation and tests Einstein's theory of general relativity, passing all tests with flying colors.
Research reveals black holes emit complex signals when observed from their equator, indicating a unique relation between gravitational waves and black hole behavior. The team discovered that the final black hole's cusp emits more intense gravitational waves, producing multiple 'chirps' as it settles to its final form.
A RUDN University physicist simplified the Einstein-Lovelock theory for black holes by presenting its geometry in a compact form with a limited number of terms, sufficient to describe observed values. This simplification could aid in studying black holes in theories with quantum corrections.
Researchers used black hole images to test Einstein's general relativity, identifying modifications that cannot be significantly different from the theory. The new analysis provides a tighter gauge for testing gravity theories, constraining deviations from general relativity even further.
Researchers from the Event Horizon Telescope collaboration used the first horizon-scale image of a black hole to test general relativity, deepening understanding of black holes and ruling out many alternatives. The study found that the size of the black hole shadow corroborates the predictions of general relativity.
A new study suggests that positive messages about being Black can decrease symptoms of depression in Black girls, while negative messages increase the risk. The research highlights the importance of avoiding negative stereotypes about Black women and incorporating gender-specific messages into mental health programs.
Astrophysicists identify distinctive signatures of stellar-mass black holes in archival X-ray data, separating them from neutron stars. This is the strongest steady signature of stellar-mass black holes to date.
Rochester Institute of Technology scientists played a key role in detecting the most massive gravitational wave binary observed to date, GW190521. The event revealed an intermediate-mass black hole with masses of about 85 and 66 solar masses.
Researchers have detected a signal from the most massive black hole merger observed in gravitational waves, producing an 'intermediate-mass' black hole with a mass of up to 1,000 solar masses. The merger released energy equivalent to eight suns and has raised questions about the formation of such massive black holes.
Researchers have discovered the first intermediate-mass black hole, which has a mass of 142 solar masses. The cosmic event was detected as a brief gravitational wave signal, lasting less than one-tenth of a second, and is believed to have occurred roughly 7 billion years ago.
Astronomers detect the most massive black hole collision ever observed, involving two mammoth black holes weighing 85 and 66 times the mass of the Sun. The larger black hole is considered 'impossible' due to its mass exceeding predicted limits.
Researchers suggest a novel process to explain the collision of a large black hole and a much smaller one, proposing that the more massive black hole was a product of a prior merger. This 'hierarchical' merging could generate a merger with a high mass ratio and spin.
Scientists have observed the heaviest black hole merger yet, with a massive object forming through a previous merger of two smaller black holes. This discovery pushes the boundaries of our understanding of astrophysics and provides new opportunities to test Einstein's theory of general relativity.
The detection of GW190521 reveals the existence of intermediate-mass black holes, weighing in at 100 to 100,000 solar masses. This finding offers insights into the origin of supermassive black holes and raises new questions about their formation.
Lung cancer incidence rates have decreased in both Black and white men and women since the 1990s, with steeper declines in Black populations. Historically higher smoking rates in Black adults have disappeared, leading to a reversal of the racial gap in lung cancer incidence among young adults.
The Q3D team will study three bright quasars to measure the activity that comes from accreting material onto supermassive black holes, revealing how it affects host galaxies. The study aims to understand the relationship between supermassive black holes and their host galaxies by analyzing gas motions in nearby and distant galaxies.
A study found that when Black physicians care for Black newborns, the mortality rate declines by 39-58%. This phenomenon suggests that Black physicians outperform their White colleagues in caring for Black newborns.
A new study by UNLV political science professor Tiffiany Howard finds that Black business ownership is crucial for achieving economic parity and closing the racial wealth gap. Despite incremental growth, Black-owned businesses continue to lag behind others in terms of market share.
Researchers propose a simple model explaining galaxy quenching, attributing it to central black hole 'feedback' that disrupts gas supply. The model reveals that larger galaxies evolve further before their black holes can grow large enough to quench star formation.
Researchers at MIT watched as a supermassive black hole's corona was abruptly destroyed, causing its brightness to drop by a factor of 10,000 in under a year. The corona eventually rebuilt itself, sparking hopes for understanding how black holes' coronas are heated and powered.
A study published by the American Psychological Association found that Black women are often viewed as more similar to Black men than to white women, leading to their exclusion from anti-racist and feminist movements. This 'intersectional invisibility' can result in Black women facing higher rates of police abuses and domestic violence.
A study by Amy G. Halberstadt found that prospective teachers are more likely to misperceive Black children as angry than white children, which can have negative consequences for Black youth. The study suggests that this anger bias can lead to Black children being disciplined unfairly and suspended more often from school.
Researchers are using Jupiter's mass and orbit to help locate the center of gravity of the solar system, which can signal the presence of massive black holes. By analyzing changes in pulsar timing, they aim to detect gravitational waves that warp space-time.
Astronomers have discovered the second most distant quasar, Pōniuāʻena, containing a monster black hole twice the mass of other quasars at the same epoch. The discovery presents significant challenges to current theories on supermassive black hole formation and growth in the early universe.
Astronomers have spotted evidence of a light-producing scenario during a black hole merger, with the flare likely resulting from the reaction of gas to the merging black holes. The event, observed by ZTF and other telescopes, provides insights into the behavior of supermassive black holes.
Astronomers have discovered the second-most distant quasar, Pōniuā`ena, powered by a supermassive black hole 1.5 billion times more massive than our Sun. The discovery challenges current theories of how these massive black holes formed and grew in the young universe.
Scientists have detected an object of 2.6 solar masses, firmly placing it within the 'mass gap' between neutron stars and black holes. The discovery was made using LIGO and Virgo detectors and may challenge current theoretical models.
New research suggests black holes could be like holograms, with information concentrated in a two-dimensional surface. This idea aligns with Einstein's theory of relativity and has significant implications for understanding these cosmic bodies.
A new computer simulation theory suggests that supermassive black holes form from gas clouds enriched with heavy elements, explaining the large number observed in galaxies today. The simulations showed that a massive star can form 10,000 times more massive than the Sun, which will continue to grow and evolve into a giant black hole.
A new study reveals that supermassive black holes experience a surge in activity as galaxies within galaxy clusters stop forming stars. The intense pressure allows for a final feast of gas clouds and stars before shutting off normal feeding, suggesting an intricate interplay between black hole behavior and star formation.
A research team developed a method to improve the durability of thin-film flexible electrodes and transistors by creating a zigzag pattern of micrometer-sized holes. This approach reduces stress distribution and prevents crack propagation, allowing devices to withstand thousands of bending cycles.
Researchers discovered black hole-neutron star mergers in globular star clusters can be detected using computer simulations. The study offers critical insights into the fusion of massive stellar objects, with potential implications for gravitational wave detection.
The National Science Foundation has awarded a $440,000 grant to Rochester Institute of Technology researchers to develop the Einstein Toolkit for simulating black holes, neutron stars, and other astrophysical phenomena. The toolkit will be scaled up to handle exascale-level resources on large supercomputers.
Astronomers have discovered a black hole weighing 50,000 times the mass of our Sun, offering the strongest evidence yet for intermediate-mass black holes in the universe. Hubble's observations confirmed that the object was tearing apart a star that passed too close, providing key evidence for its existence.