Cosmic slurp: Researchers used NSF XSEDE supercomputers to simulate tidal disruptions of stars by supermassive black holes, predicting their observational signatures. This will help advance our understanding of galactic physics and properties of supermassive black holes.
A recent study by Rice University and colleagues analyzed the environmental fate of black carbon in deep ocean sediments. They found that more than half of black carbon never reaches the bottom, but instead stays dissolved in seawater or gets trapped in particles before sinking to the seafloor.
Researchers at Northwestern University are observing the closest approach between Sgr A*, a supermassive black hole, and gas cloud G2, which could reveal insights into black hole growth. The data from Chandra X-ray Observatory and Very Large Array may provide clues about the feeding habits of these massive objects.
Physicist Chris Adami has solved the information paradox in Hawking's black hole theory by introducing the concept of stimulated emission. According to Adami, the information swallowed by a black hole is copied and preserved outside the event horizon through stimulated emission.
Astronomers have found a new superpowered small black hole named MQ1 in galaxy M83, which is classed as a microquasar with jets that heat and sweep away surrounding gas. The discovery sheds light on early universe evolution and provides insight into the growth of quasars.
Astronomers using data from NASA's RXTE satellite discovered a dozen cloud events where gas clouds moved across the line of sight, dimming X-ray light produced by supermassive black holes in active galaxies. The study triples previous cloud event counts and provides new insights into the environments around supermassive black holes.
Researchers used computer simulations to explore the destruction of a star by a black hole, finding that hydrogen lines are highly ionized and don't appear in spectra. The study provides new insights into the origin of emission lines in tidal disruption events and sheds light on the role of accretion disks.
A study by Princeton University finds that black mayoral candidates in Southern cities tend to win close elections with higher voter turnout than their opponents. This is attributed to effective voter mobilization strategies that targeted unregistered African-American voters, making it cheaper for black campaigns to get these votes out.
A team of astronomers has made a surprising finding about smaller black holes, discovering they can eat matter in an orderly fashion. The black hole in question is surprisingly lightweight and swallows its material at close to its theoretical limits, producing high-energy X-rays.
Scientists at Rochester Institute of Technology will simulate extreme black holes with support from a $525,000 grant. Their contributions will help advance the international effort to confirm the existence of gravitational waves and black holes, anticipating new field discoveries.
Researchers have found evidence of iron and nickel in the jets from a typical black hole, revealing that these heavy atoms carry more energy than lighter particles. This discovery suggests that black holes' accretion disks power jets, which could generate detectable gamma rays and neutrinos.
Researchers propose a new model for supermassive black hole growth involving 'seed' black holes formed from early stars. A single collapsing star can produce a pair of black holes that merge, resolving the issue of their rapid formation in the young universe.
A recent study using gravitational wave data from the Parkes radio telescope has challenged existing theories on supermassive black hole growth. The researchers tested four models of black-hole growth against observational data, effectively ruling out one model and pushing others to re-evaluate their predictions.
Researchers used gravitational wave data to test models of supermassive black hole growth, ruling out one model and leaving three others as possibilities. The study provides new insights into the growth of massive black holes, shedding light on a long-standing astronomical question.
Dvali and collaborator Cesar Gomez will investigate if black holes possess matter with Einstein-Bose properties, potentially altering our understanding of gravity and space-time. They believe black holes are a collection of Bose-Einstein condensates, challenging classical physics assumptions.
According to a new hypothesis, black holes may have distinct features, dubbed 'hair', which are influenced by the surrounding matter. This concept contradicts the traditional 'bald' model proposed by Roy Kerr in 1963.
Researchers develop new technique to find coherent ocean eddies, equivalent to black holes, which can moderate the negative impact of melting sea ice. These 'eddy-black holes' can also transport warm and salty water, influencing climate change and ocean currents.
Astronomers have found strong evidence that a galaxy's central black hole is blowing massive amounts of gas out of the galaxy, limiting its growth and rate of star formation. The process, observed in a galaxy called 4C12.50, is thought to be key to understanding how galaxies develop and regulate the growth of their central black holes.
Astronomers using NASA's Chandra X-ray Observatory have found that less than 1 percent of the gas within 26,000 light-years of the Milky Way Galaxy's giant black hole reaches its event horizon. Instead, most gas is ejected before it can brighten and emit X-rays.
A team of astronomers used NASA's Chandra X-ray space telescope to solve a long-standing mystery about super massive black hole accretion rates. They found that most SMBHs swallow very little cosmic material and instead reject hot gases due to their high temperatures.
Astronomers have created time-lapse movies of a jet of superheated gas emanating from a supermassive black hole at the center of galaxy M87. The research team analyzed Hubble data to study the details of this process in understanding galaxy formation and black hole physics.
Astronomers at Durham University developed a new way to measure supermassive black holes' spin, which is linked to their role in driving galaxy growth. The technique uses the distance between a black hole and its feeding disc to estimate spin.
Researchers use holographic duality to translate physics of black holes to superfluid turbulence, discovering turbulent flows behave like 3-D fluids. This breakthrough helps explain complex behavior of superfluids and provides new insights into the dynamics of these materials.
A gigantic coronal hole has been observed by NASA's SOHO near the sun's north pole, providing valuable insights into space weather. The coronal hole is a dark region of the sun's corona with lower temperatures and appears much darker than its surroundings.
Astrophysicists used supercomputer simulations and traditional calculations to demonstrate that gas spiraling toward a black hole inevitably results in X-ray emissions. The study reveals high-energy light emission is not only possible but also an inevitable outcome of gas being drawn into a black hole.
A new NASA-led study confirms the production of high-energy X-rays from gas spiraling into a black hole. The research models the complex motions and turbulent magnetic fields in the accretion disk, reproducing important features long observed in active black holes.
A study using NASA's Chandra X-ray Observatory and Spitzer Space Telescope data suggests that black holes are responsible for at least 20% of the cosmic infrared background. This finding indicates intense activity from black holes feeding on gas during the epoch of the first stars.
Astronomers may witness the birth of a black hole for the first time using a new analysis that predicts a distinct burst of light just before the black hole forms. The study suggests that this signature light burst could be detectable in nearby galaxies and provide valuable insights into black-hole formation.
A team of researchers has developed a method using black holes to measure the universe's rate of expansion with high accuracy. The method uses radiation emitted by material surrounding black holes, allowing for distance measurements of billions of light years and providing insights into the universe's past.
Research finds that a significant proportion of black carbon in soil dissolves into rivers and flows to the ocean, undermining efforts to use soil as a carbon sink. The study estimated that 27 million tons of black carbon flow from rivers to oceans annually.
Studies on the fruit fly Drosophila show that blind flies can't see due to histamine recycling in glial cells. Flies lacking Ebony and Tan genes have impaired vision, but those with Black mutations still struggle to see without histamine recycling. Further research is needed to understand the role of enzyme Black in vision.
Assistant professor of astronomy Misty Bentz will receive a five-year $862,769 NSF grant to measure distances to galaxies with known black hole masses and obtain clearer images of galaxies to predict black hole masses. This project aims to develop a shortcut for predicting black hole mass in any given galaxy through simple observations.
Researchers have found that entanglement across a black hole's event horizon plays a crucial role in determining the existence of a 'firewall' paradox. The study confirms and generalizes previous claims about entanglement in black holes, supporting Einstein's theory of gravity.
Researchers used NuSTAR to observe X-rays emitted by hot gas near a supermassive black hole, ruling out obscuring clouds and conclusively measuring its spin rate. The findings provide crucial clues about the fundamental relationship between black holes and their host galaxies.
Astronomers have measured the spin rate of a supermassive black hole, providing insights into the galaxy's evolution. The black hole's spin is linked to its accretion disk and can offer clues about the galaxy's past.
Recent supercomputer simulations on XSEDE provide new insights into the interaction between jets, accretion disks, and magnetic fields around black holes. The findings challenge the long-held simplistic view of these phenomena, revealing a more complex and dynamic relationship between the jet, disk, and gravitational forces.
A new technique developed by Oxford University scientists can spot carbon monoxide within gas circling a supermassive black hole, 'weighing' its mass. This breakthrough enables the study of thousands of distant galaxies and spiral galaxies, previously hard to target.
Researchers created a biophysical model predicting that holes larger than 15-24 nanometers would cause bacterial cells to burst. Experiments validated this theory by measuring holes in lysed bacteria cells with diameters of 22-180 nanometers.
A new study using data from NASA's Swift satellite and Fermi Gamma-ray Space Telescope shows that high-speed jets launched from active black holes possess fundamental similarities regardless of mass, age or environment. The result provides a tantalizing hint that common physical processes are at work.
A team of astronomers discovered a 'missing link' of black holes in the Andromeda galaxy, shedding light on bright X-ray sources and ultraluminous X-ray sources (ULXs). The findings confirm that these ULXs are normal, everyday black holes with masses around ten times that of the Sun.
Researchers used Earth-orbiting X-ray telescopes to observe a bingeing black hole that expels powerful beams of material, solving the debate over whether ULXs are black holes gorging themselves or more massive ones eating sedately. The discovery provides key insights into how jets are produced by a binging black hole.
Astronomers have discovered a black hole with 17 billion solar masses in the heart of a small galaxy, NGC 1277. This massive object challenges current models of galaxy evolution and could be the largest known black hole of its kind.
Astronomers used the Hobby-Eberly Telescope to measure a massive black hole in galaxy NGC 1277 with a mass 17 billion Suns, rewriting theories on black hole formation. This unusual finding comes from a survey of the most massive galaxies in the universe.
A record-setting X-ray jet has been detected 12.4 billion light years from Earth, providing a glimpse into the explosive activity associated with supermassive black holes in the early universe. The jet is thought to be boosted by cosmic background radiation and points almost directly toward us.
A recent study reveals that two different types of electron holes contribute to the photocurrent in hematite-based photoanodes. The discovery was made using soft X-ray absorption spectroscopy under simulated sunlight and in the dark, providing new insights into the electronic structure of hematite.
Astronomers report the discovery of S0-102, a star with an extremely short orbit near the supermassive black hole at the Milky Way's galactic center. The study aims to test Einstein's theory of general relativity and reveal the fabric of space and time around a black hole.
Two black holes, about 10 to 20 times heavier than the Sun, have been found in the globular cluster M22, a surprise discovery that challenges existing theories. The research, published in Nature, reveals that these smaller black holes are more common in globular clusters than previously thought.
Astronomers have found two smaller black holes in Messier 22 globular cluster, contradicting theoretical predictions of a single black hole. The discovery sheds new light on the environment in close clusters of hundreds of thousands of stars.
Researchers used computer simulations to explore the mergers of supersized black holes, revealing a 'funnel-like structure' that could drive particle jets. The study sheds light on the universe's most extreme phenomena, including gravitational waves, black holes, and the death of stars.
A team of scientists has discovered a 'launchpad' where jet streams from black holes originate, providing insight into the phenomenon. The finding suggests that the black hole is the engine driving the jets, and spin plays a crucial role in their production.
Researchers at MIT's Haystack Observatory have measured the radius of a black hole at the center of a distant galaxy using the Event Horizon Telescope. The measurement confirms Einstein's theory of general relativity by showing that the accretion disk is spinning in the same direction as the black hole.
Astronomers have measured the closest distance that matter can approach a black hole without being pulled in. The findings suggest that the accretion disk is spinning in the same direction as the black hole, providing new insights into gravity and space.
Researchers found that chronic stress predicts greater increases in body weight over time in both black and white girls. However, the negative effect of chronic stress on black girls' weight may explain racial disparities in obesity levels. The study suggests stress may play a role in the obesity epidemic and racial disparities.
Researchers from Cardiff University found that the different tones of a dying black hole can provide insight into its mass and spin. By analyzing these tones, scientists may be able to weigh two black holes after they've collided and merged, potentially testing Einstein's general theory of relativity.
A recent field study in California cities found black carbon absorption enhancements of just 6 percent, suggesting that climate models may be overestimating warming by black carbon. The researchers' findings highlight the complexity of airborne particles and challenge existing projections about their impact on global and regional climate.
The conference aimed to examine recent developments in active galactic nuclei and their effect on star formation. Researchers now believe that the energy released by supermassive black holes controls this process, which is crucial for galaxy evolution.
Researchers have identified a QPO signal in a distant galaxy's black hole, revealing insights into the nature of compact objects. The detection extends the reach of relativity testing to smaller black holes, about 3.5 minutes apart.
A recent HPTN study found significantly higher rates of new HIV infections among young black gay and bisexual men in the US compared to white MSM. The study's findings highlight the need for urgent action to stem the spread of HIV among this population.
Black gay couples tend to practice safe sex and discuss their safety habits, while white gay couples are more likely to discuss risks but less likely to use condoms. The study suggests that being in a relationship isn't a risk factor for black men, but rather other factors need to be explored.
Intermediate-mass black holes can grow in galaxy gas disks through a mechanism similar to giant planet formation. The 'runaway growth' phenomenon allows stellar black holes to swallow stars and increase their mass, potentially creating an intermediate-mass black hole.