Astronomers observe a direct connection between stellar material and bright flare emitted as star is consumed, revealing the origin of obscuring dust and debris. The study provides insights into supermassive black holes and matter behavior under extreme gravity conditions.
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.
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.
Researchers from University of Exeter argue that current global climate pledges are insufficient due to government support for fossil fuels and destructive policies. They call for a comprehensive global plan with seven recommendations to address the climate crisis.
Researchers detected nitrous acid levels two to four times higher than expected in wildfire plumes globally, driving increased ozone pollution and air quality harm. The chemical accelerates the formation of lung-damaging ozone pollution downwind of fires, with significant variations depending on ecosystem type.
The satellite detected a low-frequency quasi-periodic oscillation (QPO) above 200 keV in a black hole binary, indicating the presence of a relativistic jet near the event horizon. The discovery resolves the long-running debate on the physical origin of low-frequency QPOs.
Materials chemists at UMass Amherst create a polymer tattoo on plant leaves to detect early ozone damage, which can reduce crop yields and threaten the food supply. The innovative method allows for frequent and long-term monitoring of cellular ozone damage in economically important crops.
Research shows that air pollution from ozone levels damages the scent of flowers, deterring moths. However, when given a chance, moths quickly learn that even polluted floral odors may lead to nutritious nectar rewards. This learning ability is crucial for moths to adapt to changing environments.
Purdue University innovators developed a wearable solution to treat antibiotic-resistant infections, allowing patients to receive treatment from home. The low-cost patch and battery-powered device deliver ozone therapy to accelerate healing.
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.
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.
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.
The discovery of radio jets in the Phoenix Galaxy Cluster suggests that a supermassive black hole is actively heating intra-cluster gas, preventing star formation. This finding has significant implications for our understanding of galaxy evolution and coevolution.
A new study has identified major gaps in the international ozone treaty, which must be addressed to avert stronger climate change and serious risks to human health. The treaty's loopholes include unaccounted for CFC and HFC emissions, leakages from old air conditioners, and emissions of nitrous oxide from agriculture.
Astronomers have provided clear evidence for the formation of an accretion disk around a supermassive black hole during a tidal disruption event. The new findings support theoretical predictions and provide unprecedented insights into these unusual events.
A massive spinning black hole powers a plasma jet through magnetic reconnection, releasing energy in 'mini-jets' that produce high-energy gamma radiation. This phenomenon explains how the energy reaches the jet's core from the black hole and ultimately originates from its rotation.
Researchers found an overall increase in ozone levels above the Northern Hemisphere over the past 20 years, despite lower ground-level ozone in some areas. Ozone increases were most pronounced in tropical regions and mid-latitude areas.
A team of researchers from the University of Kansas blames a series of supernovae explosions for triggering the end-Devonian extinction event. The ionizing radiation caused internal damage in large animals and organisms, leading to mass extinctions of armored fish and trilobites.
A new study led by University of Illinois astronomer Brian Fields explores the possibility that astronomical events were responsible for an extinction event 359 million years ago. Researchers found evidence suggesting long-lasting ozone-depletion, which could be caused by killer cosmic rays from nearby supernovae.
A team of researchers used Arecibo Observatory data and NASA's Fermi Large Area Space Telescope to detect a gamma-ray heartbeat coming from a cosmic gas cloud. The 'heartbeat' rhythm matches the precession of a black hole's jets, suggesting that the cloud's emission is powered by the microquasar.
Scientists have detected a mysterious gamma-ray heartbeat from a cosmic gas cloud in the constellation Aquila, powered by a neighbouring precessing black hole. The research team analysed over ten years of data from NASA's Fermi gamma-ray space telescope, revealing a consistent period between the cloud's emission and the black hole's jets.
Astronomers used Hubble Space Telescope to detect ozone in Earth's atmosphere, simulating conditions for future exoplanet observations. The study aims to develop models of Earth's spectrum as a template for categorizing atmospheres on extrasolar planets.
This study reveals that El Niño-Southern Oscillation (ENSO)-modulated vegetation fires in Southeast Asia dominate the springtime trans-Pacific transport of ozone across the entire North Pacific Ocean. The enhanced ozone plumes stretch over 15,000 km from the South China Sea to Southwestern North America and the Gulf of Mexico.
Researchers used femtosecond laser direct write technology to simulate curved space-time near a black hole. They observed accelerated single-photon wave packets and fermion pairs escaping the black hole, mimicking Hawking radiation. This experiment demonstrates the potential for quantum simulation in studying general relativity.
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.
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.
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 detected a supermassive black hole's heartbeat, which has been ongoing for over ten years. The signal was spotted again in 2018 using X-ray satellite observations, providing valuable information about the black hole's event horizon.
Ozone pollution in China's most populated and industrialized city clusters poses a great challenge due to diverse precursors. Long-term research is necessary to accurately determine main sources of ozone and inform effective control strategies.
Astronomers have observed a confirmed heartbeat in a supermassive black hole for over ten years, with the signal repeating every hour. The research provides new insights into the black hole's size and structure close to its event horizon.
Researchers discovered that a brief ozone layer collapse led to the extinction of plant and freshwater aquatic life 360 million years ago. This finding has profound implications for our warming world today, as Earth's temperatures may reach comparable levels, potentially triggering a similar event.
Researchers find ozone sterilization method effective in killing COVID-19 virus, as well as other viruses like poliovirus and rotavirus. Ozone-based sanitizers like SoClean can be used to sterilize masks for reuse.
Astronomers using ALMA have spotted quasi-periodic flickers in millimeter-waves from the center of the Milky Way, suggesting a rotating radio spot circling a supermassive black hole. The findings provide insight into space-time with extreme gravity and may shed light on the behavior of gas around the black hole.
Researchers found that ozone-depleting chemical alternatives have increased dramatically in the Arctic since 1990, contaminating freshwater sources and affecting wildlife. The substances, known as scPFCAs, can travel long distances and accumulate in human blood and food crops.
A recent study found a significant decrease in PM2.5 concentrations in eastern China and corresponding reductions in heavily polluted days. However, surface ozone levels have been increasing in most cities during the same period, indicating stronger photochemical pollution.
A study by the UPV/EHU-University of the Basque Country analyzed the influence of ozone formation precursors in the Valderejo Nature Reserve. The research found that biogenic volatile organic compounds (BVOCs) contribute up to 68% of the total VOCs measured, with isoprene and monoterpines being key contributors.
An international team led by Princeton atmospheric scientist Meiyun Lin found that drought-stressed vegetation reduces ozone removal, worsening pollution episodes. This study highlights the need for stronger emission controls to address ozone air quality in Europe and has broader implications.
A new study by researchers at the University of Colorado Boulder has found that the international ozone treaty has stopped changes in Southern Hemisphere atmospheric circulation. The Montreal Protocol, which phased out ozone-depleting chemicals, has driven recent reversals in these patterns.
Researchers predict a nested series of rings within black hole images, with each successive ring becoming increasingly sharper due to its higher number of orbits around the black hole. This discovery enables new possibilities for observing black holes using only two telescopes far apart.
Emissions of CFC-11 and CFC-12 are larger than expected, with CFC banks slowly leaking these chemicals into the atmosphere, delaying ozone recovery and contributing to climate change.
A study by UCI researchers found that reductions in ground ozone resulted in $600 million in increased production annually, with yields projected to rise by 5-20% for certain crops like wine grapes and table grapes. The study highlights the benefits of air quality standards for California's high-value crops.
A new study published in Environment International links poor air quality to changes in the human gut microbiome, increasing the risk of obesity and diabetes. Young adults exposed to higher levels of ozone showed less microbial diversity and more species associated with obesity and disease.
A large study found daily exposure to ground level ozone in cities worldwide is associated with an increased risk of death. The study suggests that more than 6,000 deaths each year could be avoided if countries implemented stricter air quality standards.
Researchers have discovered that ozone treatment and subsequent chlorination can convert trace amounts of some pharmaceuticals in wastewater into potentially toxic halonitromethanes. The study found that ozone treatment increased the formation of these compounds, which could be harmful to human health.
Physicists at Vienna University of Technology have discovered a new type of quasi-particle called the pi-ton, which consists of two electrons and two holes. The pi-ton is created by absorbing a photon and decays into another photon, exhibiting properties similar to those of particles.
Research suggests that reducing emissions of ozone-forming gases from human activities such as road transport and energy production can improve plant growth and capture more carbon. A 50% cut in these emissions is proposed as a large but plausible target to mitigate ozone-induced loss of plant productivity.
New research suggests that cleaning up ozone precursors in energy, industrial, and transportation sectors can mitigate climate change by increasing the land's ability to remove carbon dioxide through photosynthesis. This could result in a 15% increase in the size of the current land sink for carbon.
Despite decreasing ozone concentrations in the air, plants' ozone uptake trends don't follow suit. FSU researchers tracked ozone uptake into plants over 10 years at 30 test sites and found that environmental factors like weather conditions have a greater impact on plant ozone dose than atmospheric ozone concentration.
Researchers at Columbia University found that ozone-depleting substances caused about a third of all global warming from 1955 to 2005 and half of Arctic warming and sea ice loss during this period. The Montreal Protocol, which phased out these substances, has been instrumental in reducing their impact on climate change.
Researchers at EPFL have achieved a record-breaking photoelectrochemical water-splitting efficiency of 4.5% using cuprous oxide (Cu2O) photocathodes with copper thiocyanate (CuSCN) as a transparent and effective hole transport layer, showing improved performance and overcoming limitations such as high cost and electron-hole recombination.
Astronomers have discovered a new class of bizarre objects at the center of the Milky Way galaxy, which resemble gas and behave like stars. The objects are thought to be binary stars that merged due to the strong gravitational force of the supermassive black hole, with four additional objects found in the same orbit.
A new study has quantified small levels of iodine in the stratosphere and links it to ozone layer decline. The research suggests that air pollution from the surface can trigger ozone destruction higher in the atmosphere.
Researchers detected inorganic iodine in the stratosphere at a concentration of 0.77 parts per trillion by volume, suggesting it plays a crucial role in ozone depletion. Iodine emissions from humans may increase particle formation and continue to affect stratospheric ozone levels.
According to latest theories, planets could be formed even in harsh environments around a black hole, with tens of thousands of Earth-like planets possible within 10 light-years of a massive black hole. This finding opens up new possibilities for astronomy and challenges current understanding of planet formation.
A new study suggests that researchers might be able to detect black hole mergers by observing the effect of their merger on a nearby gas disk. If successful, this would allow astronomers to pinpoint the cosmic location of these events and study them in greater detail.
Researchers developed an AI-based ozone forecasting system that can predict ozone levels with 85-90% accuracy. The model uses convolutional neural networks to analyze current conditions and forecast future ozone levels, improving health alerts for people at risk.
A new study finds that relaxing U.S. energy regulations and considering climate change would increase ozone precursors in the air, leading to more counties failing to meet air quality standards. The research used a computer model to simulate the effects of relaxed policies and climate change on ozone levels through 2050.
A new study by Georgia Institute of Technology researchers warns that rollbacks of US energy regulations could lead to increased CO2 emissions, slowed progress in reducing pollutants, and worsening air quality. This could result in higher costs for healthcare and finances due to increased cases of respiratory illness.
A new study found that genetically diverse corn plants have varying responses to high ozone levels, with some experiencing yield losses of up to 10%. The research could lead to the development of ozone-resistant corn varieties, helping plant scientists address the hidden threat to corn agriculture.
The Antarctic ozone hole's decline has indirectly helped increase sea ice due to altered atmospheric and oceanic circulations. Ozone-induced changes impact sea surface temperatures and dynamics of sea ice.