Current Dark Energy News and Events

Current Dark Energy News and Events, Dark Energy News Articles.
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Microbes fuelled by wind-blown mineral dust melt the Greenland ice sheet
Scientists have identified a key nutrient source used by algae living on melting ice surfaces linked to rising sea levels. They discovered that phosphorus containing minerals may be driving ever-larger algal blooms on the Greenland Ice Sheet. (2021-01-25)

New advances in the detection of bias in face recognition algorithms
A team from the Computer Vision Center (CVC) and the University of Barcelona has published the results of a study that evaluates the accuracy and bias in gender and skin colour of automatic face recognition algorithms tested with real world data. Although the top solutions exceed the 99.9% of accuracy, researchers have detected some groups that show higher false positive or false negative rates. (2021-01-25)

A world first in circadian clock manipulation
A new method developed by Nagoya University and Groningen University scientists allows for reversible manipulation of the circadian clock period using a light-activated switch. Compounds which act on clock proteins were identified through large-scale chemical screening, and modified to include a light-activated switch, which was further modified to react to non-harmful visible light, creating a non-toxic and fully reversible circadian clock control process. (2021-01-24)

Reducing traps increases performance of organic photodetectors
Physicists at the Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) discovered that trap states rule the performance of organic photodetectors, ultimately limiting their detectivity. These highly promising results have now been published in the renowned scientific journal Nature Communications. (2021-01-22)

Search for axions from nearby star Betelgeuse comes up empty
An MIT-led search for axions from nearby star Betelgeuse has come up empty, significantly narrowing the search for hypothetical dark matter particle. (2021-01-21)

Could "Power Walking" fuel the energy revolution? India is ready to step up
India has an energy problem. It currently relies heavily on coal and consumer demand is expected to double by 2040, making its green energy targets look out of reach. Part of the solution could come from harvesting energy from footsteps, say Hari Anand and Binod Kumar Singh from the University of Petroleum and Energy Studies in Dehradun, India. Their new study, published in the De Gruyter journal Energy Harvesting and Systems, shows that Indian attitudes towards power generated through piezoelectric tiles are overwhelmingly positive. (2021-01-19)

Light-controlled Higgs modes found in superconductors; potential sensor, computing uses
Iowa State University's Jigang Wang and a team of researchers have discovered a short-lived form of the famous Higgs boson -- subject of a groundbreaking search at the Large Hadron Collider -- within an iron-based superconductor. This Higgs mode can be accessed and controlled by laser light flashing on the superconductor at trillions of pulses per second. (2021-01-19)

Purely organic hole transporter
Durable, high-performing perovskite solar cells also require durable, high-performing charge-transporting layers. Scientists have developed the first organic hole transporter that does not need a dopant to attain high charge mobility and stability. According to the study published in the journal Angewandte Chemie, this novel hole-transporting layer outperforms reference materials and protects the perovskite organic cell from air humidity. (2021-01-18)

Study: X-Rays surrounding 'Magnificent 7' may be traces of sought-after particle
A new study, led by a theoretical physicist at Berkeley Lab, suggests that never-before-observed particles called axions may be the source of unexplained, high-energy X-ray emissions surrounding a group of neutron stars. (2021-01-15)

Giant 2D atlas of the universe helps dark energy spectroscopic survey
Researchers from the National Astronomical Observatories of Chinese Academy of Sciences (NAOC) and their collaborators released a giant 2D map of the universe, which paves the way for the upcoming new-generation dark energy spectroscopic survey. (2021-01-14)

Red and green snow algae increase snowmelt in the Antarctic Peninsula
Red and green algae that grow on snow in the Antarctic Peninsula cause significant extra snowmelt on par with melt from dust on snow in the Rocky Mountains, according to a first-of-its-kind scientific research study. This could have serious impacts on regional climate, snow and ice melt, freshwater availability and ecosystems, yet is not accounted for in current global climate models. (2021-01-13)

Giant map of the sky sets stage for ambitious DESI survey
Astronomers using images from Kitt Peak National Observatory and Cerro Tololo Inter-American Observatory have created the largest ever map of the sky, comprising over a billion galaxies. The ninth and final data release from the ambitious DESI Legacy Imaging Surveys sets the stage for a ground-breaking 5-year survey with the Dark Energy Spectroscopic Instrument (DESI), which aims to provide new insights into the nature of dark energy. The map was released today at the January 2021 meeting of the American Astronomical Society. (2021-01-13)

NYUAD study finds fragmented sleep patterns can predict vulnerability to chronic stress
New research from NYU Abu Dhabi's Laboratory of Neural Systems and Behavior for the first time used an animal model to demonstrate how abnormal sleep architecture can be a predictor of stress vulnerability. These important findings have the potential to inform the development of sleep tests that can help identify who may be susceptible -- or resilient -- to future stress. (2021-01-12)

Enlightening dark ions
Every field has its underlying principles. For economics it's the rational actor; biology has the theory of evolution; modern geology rests on the bedrock of plate tectonics. (2021-01-12)

Measurements of pulsar acceleration reveal Milky Way's dark side
It is well known that the expansion of the universe is accelerating due to a mysterious dark energy. Within galaxies, stars also experience an acceleration, though this is due to some combination of dark matter and the stellar density. In a new study to be published in Astrophysical Journal Letters researchers have now obtained the first direct measurement of the average acceleration taking place within our home galaxy, the Milky Way. (2021-01-11)

Bacteria can tell the time
New research reveals that bacteria have internal clocks that align with the 24-hour cycle of life on Earth. (2021-01-08)

Fires, flooding before settlement may have formed the Amazon's rare patches of fertility
Phosphorous, calcium and charcoal in spotty patches of fertile soil in the Amazon rainforest suggest that natural processes such as fires and river flooding, not the ingenuity of indigenous populations, created rare sites suitable for agriculture, according to new research. (2021-01-04)

Controlling the nanoscale structure of membranes is key for clean water, researchers find
A desalination membrane acts as a filter for salty water: push the water through the membrane, get clean water suitable for agriculture, energy production and even drinking. The process seems simple enough, but it contains complex intricacies that have baffled scientists for decades -- until now. Researchers from Penn State, The University of Texas at Austin, Iowa State University, Dow Chemical Company and DuPont Water Solutions published a key finding in understanding how membranes actually filter minerals from water, online today (Dec. 31) in Science. (2020-12-31)

Desalination breakthrough could lead to cheaper water filtration
Producing clean water at a lower cost could be on the horizon after researchers from The University of Texas at Austin and Penn State solved a complex problem that has baffled scientists for decades, until now. (2020-12-31)

Primordial black holes and the search for dark matter from the multiverse
In their paper, the team described a novel scenario for primordial black hole (PBH) formation and showed that the black holes from the ''multiverse'' scenario can be found using the Hyper Suprime-Cam (HSC) of the 8.2m Subaru Telescope, a gigantic digital camera--the management of which Kavli IPMU has played a crucial role--near the 4,200 meter summit of Mt. Mauna Kea in Hawaii. (2020-12-25)

It's electrifying! This is how Earth could be entirely powered by sustainable energy
Can you imagine a world powered by 100% renewable electricity and fuels? It may seem fantasy, but a collaborative team of scientists has just shown this dream is theoretically possible - if we can garner global buy-in. The study explores what changes are needed in our energy mix and consumption patterns if we are to achieve 100% renewability in a way that supports everyone and the myriad of life on our planet. (2020-12-22)

Looking for dark matter near neutron stars with radio telescopes
In 1983, theoretical physicist Pierre Sikivie found that axions have another remarkable property: In the presence of an electromagnetic field, they should sometimes spontaneously convert to easily detectable photons. What was once thought to be completely undetectable, turned out to be potentially detectable as long as there is high enough concentration of axions and strong magnetic fields. (2020-12-21)

Inverted fluorescence
Fluorescence usually entails the conversion of light at shorter wavelengths to light at longer wavelengths. Scientists have now discovered a chromophore system that goes the other way around. When excited by visible light, the fluorescent dyes emit light in the ultraviolet region. According to the study published in the journal Angewandte Chemie, such light upconversion systems could boost the light-dependent reactions for which efficiency is important, such as solar-powered water splitting. (2020-12-18)

NYS can achieve 2050 carbon goals: Here's how
By delving into scientific, technological, environmental and economic data, Cornell University engineering researchers examined whether New York could achieve a statewide carbon-free economy by 2050. Their finding: Yes, New York can reach this goal - and do it with five years to spare. (2020-12-18)

BAME babies at highest risk of Vitamin D deficiency
A third of all babies and half of Black, Asian and Minority Ethnic (BAME) babies are vitamin D deficient, a large study of 3000 newborn's in the West Midlands has shown. (2020-12-16)

Unique prediction of 'modified gravity' challenges dark matter
An international group of scientists, including Case Western Reserve University Astronomy Chair Stacy McGaugh, has published research contending that modified Newtonian dynamics (MOND) -- a rival idea to the popular dark matter hypothesis--more accurately predicts a galactic phenomenon that appears to defy the classic rules of gravity. (2020-12-16)

Dark storm on Neptune reverses direction, possibly shedding a fragment
Astronomers using NASA's Hubble Space Telescope watched a mysterious dark vortex on Neptune abruptly steer away from a likely death on the giant blue planet. (2020-12-16)

Engineers go microbial to store energy, sequester CO2
By borrowing nature's blueprints for photosynthesis, Cornell University bioengineers have found a way to efficiently absorb and store large-scale, low-cost renewable energy from the sun - while sequestering atmospheric carbon dioxide to use later as a biofuel. (2020-12-15)

Seabed sediment and asphalt areas are noteworthy sources of heat energy
According to a new study from the University of Vaasa, seabed sediment and asphalt areas are noteworthy sources of heat energy also in northern conditions. Sediment heat has been studied in Suvilahti, Vaasa, Finland and asphalt heat in the parking area of University of Vaasa for several years. (2020-12-14)

Benefits of renewable energy vary from place to place
A new study finds the environmental benefits of renewable power generation vary significantly, depending on the nature of the conventional power generation that the renewable energy is offsetting. The researchers hope the work will help target future renewable energy investments in places where they can do the most good. (2020-12-14)

When chemistry with green light mimics what happens in life
Taking inspiration from nature, researchers at Queensland University of Technology in Australia and Ghent University in Belgium created a green light-stabilised 3D polymer structure that unfolds itself when left in darkness - the first reported example of a reversible, light-triggered process to fold polymers into single chain nanoparticles. (2020-12-13)

Pizza can help address the dark matter mystery?
The IBS research team developed a novel multiple-cell cavity ('pizza cavity') haloscope that will extend the axion search band to higher-frequency regions. (2020-12-11)

Cataloging nature's hidden arsenal: Viruses that infect bacteria
A new approach for studying phage-bacteria interactions will help scientists study the intricate offensive and defensive chemical tactics used by parasite and host. These microscopic battles have implications for medicine, agricultural research, and climate science. (2020-12-10)

Study confirms dark coating can reduce satellite reflectivity
Observations conducted by the Murikabushi Telescope of Ishigakijima Astronomical Observatory confirmed that dark coating can reduce satellite reflectivity by half. There are concerns that numerous artificial satellites in orbit could impair astronomical observations, but these findings may help alleviate such conditions. (2020-12-08)

Breakthrough optical sensor mimics human eye, a key step toward better AI
CORVALLIS, Ore. - Researchers at Oregon State University are making key advances with a new type of optical sensor that more closely mimics the human eye's ability to perceive changes in its visual field. (2020-12-08)

Green energy transition: Early and steady wins the race
Researchers from Aarhus University and Karlsruhe Institute of Technology have modelled the decarbonisation of the sector-coupled European energy system using uninterrupted high-res hourly data for every European and Scandinavian country and network interconnectivity. The research has now been published in Nature Communications and the results are clear: To reach climate-neutrality by 2050 we need solar energy. And lots of it. (2020-12-04)

Optimising laser-driven electron acceleration
In a new paper published in the EPJ D, Etele Molnár, ELI-NP, Bucharest, and co-authors study and review the characteristics of electron acceleration in a vacuum caused by the highest-power laser pulses achievable today looking for the key to maximum net energy gain. (2020-12-04)

Detecting solar neutrinos with the Borexino experiment
A paper published in EPJ C by a team of authors including XueFeng Ding, Postdoc Associate of Physics at Princeton University, United States, documents the attempts of the Borexino experiment to measure low-energy neutrinos from the sun's carbon-nitrogen-oxygen (CNO) cycle for the first time. (2020-12-04)

Dark excitons hit the spotlight
Heralding the end of a decade-long quest, in a promising new class of extremely thin, two-dimensional semiconductors, scientists in Japan have for the first time directly visualized and measured elusive particles, called dark excitons, that cannot be seen by light. The powerful technique, described in Science, could revolutionize research into two-dimensional semiconductors and excitons, with profound implications for future technological devices, from solar cells and LEDs to smartphones and lasers. (2020-12-03)

A hint of new physics in polarized radiation from the early universe
Yuto Minami at KEK and Eiichiro Komatsu at Kavli IPMU developed a new method to calibrate detectors to the light from dust in our Galaxy, thereby describing a new physics, with 99.2 percent accuracy, that may show parity symmetry breaking. (2020-12-02)

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